NHTSA owner reports · September 18, 2026 snapshot.
Forward Collision Avoidance complaints
211 reportsClear category filterMileage unknown · Jan 16, 2024
Forward Collision AvoidanceService BrakesVehicle Speed Control
1. The car rolling back immediately after foot is off of brakes pedal with even a minor steepness in the road or parking space, that could be very dangerous upon stopping behind a red lights, or any other situations that another car is right behind this car such as getting in or out of tight parking spots. 2. The car brakes are…
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1. The car rolling back immediately after foot is off of brakes pedal with even a minor steepness in the road or parking space, that could be very dangerous upon stopping behind a red lights, or any other situations that another car is right behind this car such as getting in or out of tight parking spots. 2. The car brakes are not reliable. They feel spongy and you can not adjust how hard and how fast they should be pushed down. In 2 occasions I had a closed call hitting the car in front of my car in highway. 3. Sometimes you feel that the car accelerates in an unpredictable fashion but for a short period of time 4. Although promised , there is no cruise control either regular or adaptive in this car Despite of several call, emails, and making web-based services requests, nothing has been done so far to resolve this issues
NHTSA ODI #11565840
Mileage unknown · Jan 16, 2024
Electrical SystemForward Collision AvoidanceService Brakes
Car doesn’t stop someone when pressing the brake . Also getting warning that emergency brake are not working . 2 incidents reported to Fisker when door swing open and batter died and car completely dead
NHTSA ODI #11565713
Mileage unknown · Jan 15, 2024
Forward Collision AvoidanceService Brakes
Braking does not work as designed when driving over potholes, bumps, or uneven pavement. The car actually speeds up without accelerating. Very dangerous to say the least. Attempts to resolve through Fisker corporate have been unsuccessful. ADAS functions; lane assist, front collision, and abs braking randomly become unavailable…
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Braking does not work as designed when driving over potholes, bumps, or uneven pavement. The car actually speeds up without accelerating. Very dangerous to say the least. Attempts to resolve through Fisker corporate have been unsuccessful. ADAS functions; lane assist, front collision, and abs braking randomly become unavailable in inclement weather. Mainly when it rains or snows. Fisker provided no spare tire. There is however a flat tire kit. Included in the kit is a bottle of tire sealant. The bottle of tire sealant was not properly sealed and leaked out in the trunk. All concerns have been reported multiple times to Fisker with multiple service tickets created. Non have been resolved since reporting beginning 11/7/23.
NHTSA ODI #11565618
Mileage unknown · Jan 12, 2024
Forward Collision AvoidanceLane Departure
"Auto Emergency Braking" and "Lane Keep System" warning messages are constantly being displayed when car is driven at particular azimuth and angle directions relative to the sun. Assuming these systems are truly unavailable, this is a major safety hazard. Even if the systems are available, but the sensors are in error, this is…
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"Auto Emergency Braking" and "Lane Keep System" warning messages are constantly being displayed when car is driven at particular azimuth and angle directions relative to the sun. Assuming these systems are truly unavailable, this is a major safety hazard. Even if the systems are available, but the sensors are in error, this is still a major problem since the systems trigger both audible and visual warnings presenting a distraction to the driver. The last time I drove the car I received over 1 dozen individual system warning messages during the course of a 10 mile drive. Fisker has told me that this problem cannot be corrected via a software update. This is an inherent design problem where Fisker is aware of the issue, as they knew it only occurred during driving while facing the sun. They have refused to have a technician correct the problem.
NHTSA ODI #11565147
Mileage unknown · Jan 11, 2024
Forward Collision AvoidanceParking BrakeService BrakesFire
I was driving on [XXX] in the Dallas area when the parking brake suddenly and unexpectedly engaged. I tried to disengage it manually using the button to the left of the steering wheel, but it would not disengage. Due to the higher speed of being on a state highway, the vehicle quickly became unstable and within a few seconds …
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I was driving on [XXX] in the Dallas area when the parking brake suddenly and unexpectedly engaged. I tried to disengage it manually using the button to the left of the steering wheel, but it would not disengage. Due to the higher speed of being on a state highway, the vehicle quickly became unstable and within a few seconds the brakes locked up and I went into a spin crossing two lanes in the process. I was lucky that no other vehicles were in the path of travel and I eventually came to a stop pointing the wrong way on a 6 lane highway. Even after coming to a stop I could not disengage the parking brake. I forced the car to drive with the brake engaged and I pulled off the road and got out of the vehicle. Smoke was pouring from the braking system and upon inspection of the wheels, both rear wheels were on fire (which I took video of). I tried calling the Fisker support line to get some help, but was informed that the app was also not working and I would need to submit a ticket, which I did (case [XXX]). Eventually the flames died out and I was able to get back into the car and “carefully” drive it home. This was not the first time the Software in the Vehicle malfunctioned, but it was the first time that I felt at risk of being harmed. I am no longer driving the vehicle as I am concerned about its safety. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #11564887
Mileage unknown · Jan 10, 2024
Forward Collision AvoidanceUnknown Or OtherVehicle Speed Control
This vehicle has numerous software problems. The biggest one is hat there is no roll away prevention. If the car is placed in reverse, and stars moving, if no other imputs are given by the driver the car will continue to roll. Als, if the drivers door is opened during this manuver, the roll continues. This is also true if the…
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This vehicle has numerous software problems. The biggest one is hat there is no roll away prevention. If the car is placed in reverse, and stars moving, if no other imputs are given by the driver the car will continue to roll. Als, if the drivers door is opened during this manuver, the roll continues. This is also true if the car is in drive and at a stop on a hill. If the brake is released the car will roll backwards and will not stop. Opening the drivers door will not initiate engagement of the brakes either. This is a very unsafe thing to have a 3 ton object rolling with no way for the vehicle to detect it is free rolling. It is unlikely that this situation would happen, but if there was a medical emergency or a sudden loss of consciousness, distraction or something else. the outcome could be very bad. Fisker needs to be more proactive addressing their software and improve its vehicles. It is a good vehicle with crappy software.
NHTSA ODI #11564660
Mileage unknown · Dec 18, 2023
Forward Collision AvoidanceService Brakes
First, the vehicle does not hold on any degree of incline. The vehicle comes with "strong regenerative braking", but when coming to a stop on a hill and taking one's foot off the accelerator, the vehicle drifts backward as if it were in neutral. It will continue backwards and gain speed, creating a danger to the driver and veh…
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First, the vehicle does not hold on any degree of incline. The vehicle comes with "strong regenerative braking", but when coming to a stop on a hill and taking one's foot off the accelerator, the vehicle drifts backward as if it were in neutral. It will continue backwards and gain speed, creating a danger to the driver and vehicles behind it. When one's foot is on the brake pedal and the driver switches from the brake pedal to the accelerator pedal, the car drifts backward and the accelerator pedal does not engage in drive mode until what seems like halfway into pressing it. When the vehicle finally goes forward, it lunges. We live in a mountainous environment, and I have already had two close calls where the vehicle drifted backward, as if in neutral, and the driver behind me honked his horn. There is no indication on the driver's display or any sound to identify this error. I have emailed the manufacturer and called them twice with no return message. I first noticed this problem on the day of delivery to my home: 11/17/2023. The action is reproducible at all times. The vehicle has not been inspected by the manufacturer, police, or insurance reps, but social media threads online point to this problem as common enough. The second problem is an ADAS warning light indicating a front collision collision fault and that emergency braking is not available. These lights are active even after a soft reset of the vehicle's software. These lights have been illuminated since delivery of the vehicle. When I called Fisker, the rep on the phone line indicated that this problem was common among customers and that a "future" software update would address it. This problem has also not been yet addressed by the manufacturer, an insurance company, or the police. This illuminated light MAY put others at risk; since it does not work, and I have not come close to a collision, I have no way of knowing the extent of the risk.
NHTSA ODI #11560780
Mileage unknown · Dec 18, 2023
Back Over PreventionForward Collision AvoidanceUnknown Or Other
The vehicle drives forward when you put it in reverse. I almost hit the car parked in front of me. The manufacturer has no interest in fixing the problem. this is on top of multiple issues with this car: All the ADAS features are not working and sending false warnings, slamming the breaks when identifying a shadow in front of th…
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The vehicle drives forward when you put it in reverse. I almost hit the car parked in front of me. The manufacturer has no interest in fixing the problem. this is on top of multiple issues with this car: All the ADAS features are not working and sending false warnings, slamming the breaks when identifying a shadow in front of the vehicle etc.. This car should have not been allowed on the road and it is only a question of time before someone is going to get hurt.
NHTSA ODI #11560754
Mileage unknown · Dec 13, 2023
Forward Collision AvoidanceService BrakesVehicle Speed Control
Issue 1 : The car over bumpy roads loses the regenerative braking and accelerates. During this time (~1-2 sec), the manual brakes don't function and response is delayed but ultimately comes to life followed by the ABS functioning. Frequency of event occurrence: Multiple times. Issue 2 : The car detects false collision and autom…
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Issue 1 : The car over bumpy roads loses the regenerative braking and accelerates. During this time (~1-2 sec), the manual brakes don't function and response is delayed but ultimately comes to life followed by the ABS functioning. Frequency of event occurrence: Multiple times. Issue 2 : The car detects false collision and automatically brakes itself coming to a full stop even if there is no car/obstacle around. This has happened both at low (~ 10 mph) as wells as high speeds (~ 40 mph), both during the day as well as night. Frequency of event occurrence: 4 times. Fisker's response: The tech has tried to fix the problem twice during two different visits by updating the software version of the car. However, during the test drive he has reproduced the loss of regen and brake failure even after the software upgrade. Separately, while driving to work after the upgrade I have been able to reproduce the problem of false collision and braking. I have informed and updated both the customer care hotline, local Fisker contact, local supervisor and other Fisker team members. Multiple cases has been already created with the Fisker team about all issues.
NHTSA ODI #11559910
Mileage unknown · Nov 28, 2023
Forward Collision AvoidanceService BrakesCrashInjury
While driving southbound on I-95 from Washington, DC to toward Richmond, on a stretch of the highway with three lanes and a constant flow of traffic across all lanes, the driver ahead of me swerved to avoid two cars ahead of her who had stopped for unknown reasons. I saw her tail lights light up and then almost immediately watch…
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While driving southbound on I-95 from Washington, DC to toward Richmond, on a stretch of the highway with three lanes and a constant flow of traffic across all lanes, the driver ahead of me swerved to avoid two cars ahead of her who had stopped for unknown reasons. I saw her tail lights light up and then almost immediately watched her swerve only to see the practically parked cars in my lane (left-most). At this point my following distance was greatly reduced. I immediately stepped on the brake which vibrated and felt more plastic rather than elastic (which had happened a couple of times before at low maneuvering speeds but still applying braking force). With cold weather and slight rain at 9:50am ET, the car practically slid and I did not feel ABS engaging. It was as if the tires seized up. The car is supposed to have a full suite of ADAS features and Automatic Emergency Braking was supposed to be available from mid-2023 (whereas other features are allegedly delayed until later in the year). To say I was disappointed with the car's handling of this situation would be an understatement. 5,000 of these vehicles have been delivered across the world and about 3,000 to 4,000 in the US. Several others have reported issues/experiences like mine online. This car is simply not safe until the software has been rectified. We were led to believe that just infotainment and miscellaneous system software was lacking but clearly this is affecting critical safety systems. Another system known to work intermittently are the cameras. If that includes the radars/cameras in charge of safety features, that means those features also only work intermittently. The accident was low-speed and low-impact and two occupants (1 adult, 1 child) in the Fisker Ocean appear to be OK. The driver/sole occupant of the other vehicle initially reported she was OK and did not require a police report or medical attention but according to my insurance agency has since changed her claim to one of "injury".
NHTSA ODI #11557276
Official recalls
6Nov 15, 2024
Fisker Group Inc (Fisker) is recalling certain 2023-2024 Ocean vehicles. The transmission may not shift into the selected gear, allowing the vehicle to roll away while in Drive or Reverse.
Consequence & remedy
Consequence: A vehicle roll away increases the risk of a crash or injury.
Remedy: Fisker released an over-the-air (OTA) software update on March 11, 2024, free of charge. Owners may contact Fisker customer service at 1-844-347-5371.
Aug 20, 2024
Fisker Group Inc (Fisker) is recalling certain 2023-2024 Ocean vehicles. The brake module software may cause an unexpected reduction in regenerative braking, decreasing the braking performance.
Consequence & remedy
Consequence: Decreased braking performance can extend the distance required to stop, increasing the risk of a crash.
Remedy: Fisker will release an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed September 26, 2024. Owners may contact Fisker customer service at 1-844-347-5371. Fisker's number for this recall is TSB10062408.
Jul 2, 2024
Fisker Group Inc (Fisker) is recalling all 2023-2024 Ocean vehicles. A communication failure with the cabin electric water pump can cause the high voltage battery management system (BMS) to enter limp mode, causing a loss of drive power.
Consequence & remedy
Consequence: A sudden loss of drive power increases the risk of a crash.
Remedy: Fisker will replace the pumps, free of charge. Owner notification letters were mailed August 19, 2024. Owners may contact Fisker customer service at 1-844-347-5371. Fisker's number for this recall is TSB30032401.
Jun 20, 2024
Fisker Group Inc (Fisker) is recalling all 2023-2024 Ocean vehicles. The exterior door handles can stick and fail to open.
Consequence & remedy
Consequence: A door that fails to open can prevent occupants from exiting in an emergency, increasing the risk of injury.
Remedy: Fisker will inspect and replace the door handles as necessary, free of charge. Owner notification letters were mailed August 19, 2024. Owners may contact Fisker customer service at 1-844-347-5371. Fisker's number for this recall is TSB55062401.
Jun 5, 2024
Fisker Group Inc (Fisker) is recalling all 2023 Ocean vehicles. The Motor Control Unit (MCU) and Vehicle Control Unit (VCU) software may cause the vehicle to enter a safe state protection mode unexpectedly, causing a loss of drive power.
Consequence & remedy
Consequence: A loss of drive power increases the risk of a crash.
Remedy: Fisker will release an over-the-air (OTA) update to the MCU and VCU software, free of charge. Owner notification letters were mailed June 13, 2024. Owners may contact Fisker customer service at 1-844-347-5371. Fisker's number for this recall is TSB10032403.
Jun 5, 2024
Fisker Group Inc (Fisker) is recalling all 2023 Ocean vehicles. The instrument panel displays the incorrect font size of the Brake, Park, and Antilock Brake System (ABS) warning lights, and displays certain warning lights in amber instead of red. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 135, "Light Vehicle Brake Systems" and 101, "Controls and Displays." Additionally, multiple warning lights fail to illuminate during the ignition cycle bulb check, failing to comply with the requirements of FMVSS 138 and 208.
Consequence & remedy
Consequence: Warning lights that do not display correctly can fail to alert the driver to critical safety information, increasing the risk of a crash or injury.
Remedy: Fisker will release an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed June 11, 2024. Owners may contact Fisker customer service at 1-844-347-5371. Fisker's number for this recall is TSB70062404.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
4PE24013 · Inadvertent Automatic Emergency Braking
Opened May 8, 2024 · Closed Jan 16, 2025
Status: closed (inferred from source dates) · Forward Collision Avoidance: Automatic Emergency Braking
On May 8, 2024, the Office of Defects Investigation (ODI) opened PE24013 to investigate reports of inadvertent activation of the automatic emergency braking (AEB) system in model year (MY) 2023 Fisker Ocean vehicles manufactured by Fisker Group Inc. (Fisker). The complaints allege the activation of AEB without an apparent roadway obstruction in the vehicle’s forward path, resulting in sudden vehicle deceleration. This sudden deceleration occurs without adequate warning or input from the driver. The braking applications range from momentary, partial application resulting in rapid loss of speed to full application, which brings the vehicle to a complete stop in the travel lane. ODI sent Fisker an Information Request (IR) letter on May 20, 2024. On June 17 and 19, 2024, Fisker and its affiliates filed a voluntary petition for relief under chapter 11 of the Bankruptcy Code. Fisker provided an incomplete response to the IR on July 1, 2024. Limited information pertaining to system validation and failure data was provided. Fisker subsequently requested more time to provide additional responsive files due to limited available resources. Fisker sent additional responsive files on September 9, 2024, September 17, 2024, and December 16, 2024, but Fisker’s response did not contain sufficient information for ODI to fully evaluate the alleged safety defect. Further, on December 27, 2024, the Fisker employees with whom ODI had been corresponding informed ODI that all Fisker employees were being “dismissed” as of that date. ODI therefore does not anticipate receiving any further responsive submissions such that it can fully evaluate the reports that led to this investigation. ODI performed phone interviews and sent a survey to consumers to obtain more information and validate the allegations. Additionally, ODI reviewed allegations of the alleged safety defect that were submitted to various online forums. Most of these reports were similar in nature to the reports received by ODI. Some of the reports in online forums appear to be duplicative reports that were also submitted to ODI. Based on the responses received and analysis of similar online reporting, there was no clear trend in the following factors pertaining to the allegations: reoccurrence of events (i.e., single or multiple incidents), speed immediately prior to the event, whether the event concluded in a reduction of speed or a full stop, roadway conditions, and warning immediately prior to the event. To date, between the reports provided by Fisker and complaints made directly to the agency, ODI is aware of over 20 reports alleging inadvertent AEB activation. Before the employees were dismissed, Fisker’s testing done in response to the inadvertent AEB allegations reportedly did not result in any inadvertent AEB activations. The “Manufacturer” and “Total” counts in the above table have been left blank because of a pending request for confidential treatment by Fisker that could not be timely addressed given the company’s status. This information factored into ODI’s investigation and analysis. The available information does not warrant further action at this time. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. Additionally, the Agency notes that the Vehicle Safety Act states: “A manufacturer’s filing of a petition in bankruptcy under chapter 7 or chapter 11 of title 11 does not negate the manufacturer’s duty to comply with section 30112 or sections 30115 through 30120 of this title,” which include the recall provisions of the Act. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
PE24010 · Failure To Open Door
Opened Apr 1, 2024 · Closed Aug 26, 2024
Status: closed (inferred from source dates) · Latches/locks/linkages:doors:latch
On April 1, 2024, the Office of Defects Investigation (ODI) opened PE24010 to investigate instances of failure to open the door in model year (MY) 2023 Fisker Ocean vehicles manufactured by Fisker Group Inc. Some complaints allege the inability to open the door from either the interior or exterior door handle, resulting in the need to use another door to egress. The investigation revealed that all four exterior door handles are subject to sticking in the extended/unlocked position, which may result in the inability to unlatch the door from either the interior or exterior door handle. The root cause is a dimensional interference between the exterior door handle chassis pocket and door handle, causing friction during handle deployment and retraction. The inability to open and egress from the occupant’s adjacent door presents an unreasonable risk to motor vehicle safety. On June 27, 2024, Fisker filed recall 24V-466 for certain MY 2023 Fisker Ocean vehicles. The recall remedy includes an inspection procedure for all four doors and provides replacement of the outer door handle if a “Not Okay” result is found. In view of the recall action being taken by Fisker, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
PE24005 · Unintended Vehicle Movement
Opened Feb 14, 2024 · Closed Dec 6, 2024
Status: closed (inferred from source dates) · Power Train:automatic Transmission
On February 14, 2024, the Office of Defects Investigation (ODI) opened PE24005 to investigate reports of unintended vehicle movement in model year (MY) 2023 Fisker Ocean vehicles manufactured by Fisker Group Inc. The complaints allege the inability to shift into the park gear and/or vehicle rollaway. The investigation found that the subject vehicles contain a logic that prevents the engagement of the park gear when the park gear request is made while the vehicle is still moving at low speeds. In the event the driver requests the park gear prior to the vehicle achieving a complete standstill status, the vehicle rejects the park gear request, displays a visual warning, and shifts into the neutral gear. Therefore, if the driver does not properly restrain the vehicle prior to exiting (i.e., allow the vehicle to come to a complete stop, then provide a second park gear request and/or engage the parking brake), the vehicle is at risk of freely rolling away in neutral. ODI found that existing strategies to deter drivers from exiting the vehicle after failing to ensure the transmission successfully engages the park gear have not stopped some from doing so. The absence of additional mechanisms to mitigate the effects of driver behavior in failing to ensure the park gear was engaged prior to exiting the vehicle constitutes a defect presenting a risk to motor vehicle safety. ODI is aware of one reported injury due to this safety defect. On November 15, 2024, Fisker filed recall 24V-865 for all MY 2023-2024 Fisker Ocean vehicles. The recall remedy is the release of software upgrade OS 2.0. This software update provides additional robustness to prevent unintended vehicle movement via two major changes. First, in the event the driver seatbelt is unlatched when the vehicle is traveling at low speeds, logic was added to initiate an automatic, controlled deceleration to bring the vehicle to a standstill. Once standstill status is achieved, the vehicle will automatically engage the park gear and the electronic parking brake. Second, OS 2.0 introduced an “Auto Vehicle Hold” feature, which holds the vehicle in standstill by maintaining friction brake pressure when the driver removes their foot from the brake pedal. This feature prevents the vehicle from rolling under gravity, which therefore helps engage both the park gear and electronic parking brake. In view of the recall action being taken by Fisker, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
PE24001 · Loss Of Braking Performance
Opened Jan 11, 2024 · Closed Aug 26, 2024
Status: closed (inferred from source dates) · Service Brakes; Service Brakes, Electric:software/programming
On January 11, 2024, the Office of Defects Investigation (ODI) opened PE24001 to investigate instances of loss of braking performance in model year (MY) 2023 Fisker Ocean vehicles manufactured by Fisker Group Inc. The complaints allege an intermittent partial loss of regenerative braking over low traction surfaces, without alerting the driver. ODI is aware of six minor crashes and one injury due to this failure. The subject vehicles utilize a brake blending feature to achieve deceleration. Upon application of the brake pedal, both the service brake system (friction braking) and regenerative braking system (electric motor negative torque) are applied. Regenerative braking on low friction road surfaces may result in wheel slippage due to the high motor negative torque. The vehicle responds by reducing and/or eliminating regenerative braking torque to reduce wheel slip on drive wheels to maintain vehicle stability and steerability. This reduction in regenerative braking may cause a sensation of loss of braking force (or even vehicle accelerating) that was reported by consumers. Additionally, the driver may experience an unusual/altered brake pedal feel during loss of regenerative braking events, requiring them to press the brake pedal harder to maintain the expected braking rate. Upon exiting the low friction road surface, the regenerative braking force is restored. The initial calibration of the regenerative braking system contained aggressive interventions with a slower recovery in the event of loss of regenerative braking. In November 2023, Fisker launched an Over-the-Air update (OS1.10 SW). This update included a recalibration to reduce regenerative braking torque less aggressively and allow torque recovery to occur more quickly. Based on consumer reports and the data that Fisker provided in response to ODI’s inquiry, OS 1.10 SW reduced, but did not eliminate, the sensation of loss of braking force and resulted in stopping distance performance improvements. Friction braking is always available when the driver presses the brake pedal, and its performance is unaffected by regenerative brake loss. Fisker’s braking system is designed to reach full deceleration even with an unavailable regenerative braking system. The partial loss of braking force during moderate braking events can be overcome by applying additional pressure to the brake pedal to slow or stop the vehicle. On August 20, 2024, Fisker filed recall 24V-623 for all 2023 MY Fisker Ocean vehicles produced for the U.S.A. The recall remedy includes OS 2.2 over-the-air update, which is expected to modify the brake module to enhance the vehicle brake system’s ability to adapt to various driving scenarios. With successful implementation of OS 2.2, a road disturbance will not trigger a reduction in regenerative braking torque. In view of the recall action being taken by Fisker, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Additional source detail variants (2)
Service Brakes, Electric:software/programming
On January 11, 2024, the Office of Defects Investigation (ODI) opened PE24001 to investigate instances of loss of braking performance in model year (MY) 2023 Fisker Ocean vehicles manufactured by Fisker Group Inc. The complaints allege an intermittent partial loss of regenerative braking over low traction surfaces, without alerting the driver. ODI is aware of six minor crashes and one injury due to this failure. The subject vehicles utilize a brake blending feature to achieve deceleration. Upon application of the brake pedal, both the service brake system (friction braking) and regenerative braking system (electric motor negative torque) are applied. Regenerative braking on low friction road surfaces may result in wheel slippage due to the high motor negative torque. The vehicle responds by reducing and/or eliminating regenerative braking torque to reduce wheel slip on drive wheels to maintain vehicle stability and steerability. This reduction in regenerative braking may cause a sensation of loss of braking force (or even vehicle accelerating) that was reported by consumers. Additionally, the driver may experience an unusual/altered brake pedal feel during loss of regenerative braking events, requiring them to press the brake pedal harder to maintain the expected braking rate. Upon exiting the low friction road surface, the regenerative braking force is restored. The initial calibration of the regenerative braking system contained aggressive interventions with a slower recovery in the event of loss of regenerative braking. In November 2023, Fisker launched an Over-the-Air update (OS1.10 SW). This update included a recalibration to reduce regenerative braking torque less aggressively and allow torque recovery to occur more quickly. Based on consumer reports and the data that Fisker provided in response to ODI’s inquiry, OS 1.10 SW reduced, but did not eliminate, the sensation of loss of braking force and resulted in stopping distance performance improvements. Friction braking is always available when the driver presses the brake pedal, and its performance is unaffected by regenerative brake loss. Fisker’s braking system is designed to reach full deceleration even with an unavailable regenerative braking system. The partial loss of braking force during moderate braking events can be overcome by applying additional pressure to the brake pedal to slow or stop the vehicle. On August 20, 2024, Fisker filed recall 24V-623 for all 2023 MY Fisker Ocean vehicles produced for the U.S.A. The recall remedy includes OS 2.2 over-the-air update, which is expected to modify the brake module to enhance the vehicle brake system’s ability to adapt to various driving scenarios. With successful implementation of OS 2.2, a road disturbance will not trigger a reduction in regenerative braking torque. In view of the recall action being taken by Fisker, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Service Brakes
On January 11, 2024, the Office of Defects Investigation (ODI) opened PE24001 to investigate instances of loss of braking performance in model year (MY) 2023 Fisker Ocean vehicles manufactured by Fisker Group Inc. The complaints allege an intermittent partial loss of regenerative braking over low traction surfaces, without alerting the driver. ODI is aware of six minor crashes and one injury due to this failure. The subject vehicles utilize a brake blending feature to achieve deceleration. Upon application of the brake pedal, both the service brake system (friction braking) and regenerative braking system (electric motor negative torque) are applied. Regenerative braking on low friction road surfaces may result in wheel slippage due to the high motor negative torque. The vehicle responds by reducing and/or eliminating regenerative braking torque to reduce wheel slip on drive wheels to maintain vehicle stability and steerability. This reduction in regenerative braking may cause a sensation of loss of braking force (or even vehicle accelerating) that was reported by consumers. Additionally, the driver may experience an unusual/altered brake pedal feel during loss of regenerative braking events, requiring them to press the brake pedal harder to maintain the expected braking rate. Upon exiting the low friction road surface, the regenerative braking force is restored. The initial calibration of the regenerative braking system contained aggressive interventions with a slower recovery in the event of loss of regenerative braking. In November 2023, Fisker launched an Over-the-Air update (OS1.10 SW). This update included a recalibration to reduce regenerative braking torque less aggressively and allow torque recovery to occur more quickly. Based on consumer reports and the data that Fisker provided in response to ODI’s inquiry, OS 1.10 SW reduced, but did not eliminate, the sensation of loss of braking force and resulted in stopping distance performance improvements. Friction braking is always available when the driver presses the brake pedal, and its performance is unaffected by regenerative brake loss. Fisker’s braking system is designed to reach full deceleration even with an unavailable regenerative braking system. The partial loss of braking force during moderate braking events can be overcome by applying additional pressure to the brake pedal to slow or stop the vehicle. On August 20, 2024, Fisker filed recall 24V-623 for all 2023 MY Fisker Ocean vehicles produced for the U.S.A. The recall remedy includes OS 2.2 over-the-air update, which is expected to modify the brake module to enhance the vehicle brake system’s ability to adapt to various driving scenarios. With successful implementation of OS 2.2, a road disturbance will not trigger a reduction in regenerative braking torque. In view of the recall action being taken by Fisker, ODI is closing this Preliminary Evaluation. The agency reserves the right to take additional action if warranted by future circumstances. To review the reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.