NHTSA owner reports · September 18, 2026 snapshot.
Vehicle Speed Control complaints
52 reportsClear category filterMileage unknown · Apr 10, 2024
Electrical SystemService BrakesVehicle Speed ControlInjury
Today, I had to slam on my breaks on the freeway. Luckily I was able to stop in time. However the Fisker completely shut off, flashed every warning light imaginable and wouldn’t respond. I sat diagonally in the middle of a 6 lane freeway and for 5 straight minutes the car wouldn’t work. I finally got the car to turn on but it wo…
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Today, I had to slam on my breaks on the freeway. Luckily I was able to stop in time. However the Fisker completely shut off, flashed every warning light imaginable and wouldn’t respond. I sat diagonally in the middle of a 6 lane freeway and for 5 straight minutes the car wouldn’t work. I finally got the car to turn on but it wouldn’t switch to drive, it was stuck on park or neutral. I had to turn off the car, lock it, unlock it and then the car responded. It was very scary. The 2nd was last weekend I had my car in the garage plugged in for 7 days and it didn’t get driven. When I returned I got in the car to drive and the battery was at full charge. While I was driving to work the battery was dropping several % a minute. After 20 miles of driving I had 9% of battery and pulled into a charging area unable to get to work. I ended up charging the Fisker and it went back to normal. While driving I never got any notices/alerts/warnings, the battery never adjusted, it just kept falling. It was very stressful, nerve racking and scary thinking this could happen at any time or any moment. I can’t imagine driving my Fisker outside the city area. Also having the same braking issues where it shudders forward. I've had to drastically change lanes because of the brakes not fully engaging. My driver side mirror was making a loud screeching noise while opening and its stopped working altogether. The bluetooth doesnt work for the music or phone as well. I have messaged Fisker customer service over 20 times and they continue to ignore me.
NHTSA ODI #11582104
Mileage unknown · Apr 6, 2024
Electrical SystemEngineVehicle Speed Control
When accelerating quickly in drive, the vehicle shifts into neutral, brakes, goes into park and shuts down. Technicians have repeated the issue and attempted to fix it but no solution has been found. The dash displays the message, "Brake System malfunction. Service Required." There are a few dash icons that display indicating a …
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When accelerating quickly in drive, the vehicle shifts into neutral, brakes, goes into park and shuts down. Technicians have repeated the issue and attempted to fix it but no solution has been found. The dash displays the message, "Brake System malfunction. Service Required." There are a few dash icons that display indicating a "System Fault," "Brake malfunction," and "ADAS fault."
NHTSA ODI #11581527
Mileage unknown · Mar 27, 2024
Forward Collision AvoidanceService BrakesVehicle Speed Control
My Fisker Ocean One has experienced multiple ADAS issues including lane departure not working, emergency braking failing regularly producing multiple warning lights, regenerative braking shutting off causing the vehicle to speed up or roll away. I have dozens of photos of the errors and videos. I will provide the link to the pho…
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My Fisker Ocean One has experienced multiple ADAS issues including lane departure not working, emergency braking failing regularly producing multiple warning lights, regenerative braking shutting off causing the vehicle to speed up or roll away. I have dozens of photos of the errors and videos. I will provide the link to the photo folder. The technician was finally able to update all of the vehicle modules to 2.0 to try to resolve this. That included a hold function updated. At roughly [XXX] I was pulling into my driveway. My road is a steep downhill to my house then a left into the drive. As I was slowly pulling into the driveway the vehicle jerked violently many times as if it was trying to stop but couldn't. I was not applying the brakes, but letting off the accelerator for the regenerative function to slow the car. When the jerking occurred I tried to brake and the brake pedal did not respond. The vehicle finally locked the wheels and came to a stop. Many warning lights came on rapidly. The message I saw was a braking fault then the car died and all screens shut off. I was half way in the road and now in front of an oncoming vehicle. I couldn't get it to start up. Fortunately the oncoming vehicle slowed and crept around me. My Fisker Ocean the rebooted itself and I was able to get it into the garage. I have under 2700 miles on it. This update 2.0 was promised to fix many of these issues and now put myself and others in danger. I suspect it was the hold function that caused the issue. It seemed like it was trying to stop and hold while I was moving. I contacted the technician who is looking into the data and I reported it to Fisker. This vehicle has been dangerous since it was first delivered. The service techs are trying but the software and build is the issue, which they cannot overcome. Link to photos of previous errors. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #11579830
Mileage unknown · Mar 27, 2024
Exterior LightingService BrakesVehicle Speed Control
Anytime the vehicle goes over a bump the vehicle lunges forward even if the operator is pressing the brakes. Collison warning does not work properly and lane departure warning is spotty. Interior lights randomly come on and off without any operator control. Fisker has not done anything since November 5, 2023 when I took delivery…
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Anytime the vehicle goes over a bump the vehicle lunges forward even if the operator is pressing the brakes. Collison warning does not work properly and lane departure warning is spotty. Interior lights randomly come on and off without any operator control. Fisker has not done anything since November 5, 2023 when I took delivery of the car.
NHTSA ODI #11579782
Mileage unknown · Mar 18, 2024
Power TrainVehicle Speed Control
Component: powertrain. It is unintended braking and acceleration. It is available for inspection. This has happened on multiple occasions: when going over bumps the vehicle jerks and lurches, applying braking or acceleration without input from me. While the braking is causing stability concerns at high speed, it is the unintend…
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Component: powertrain. It is unintended braking and acceleration. It is available for inspection. This has happened on multiple occasions: when going over bumps the vehicle jerks and lurches, applying braking or acceleration without input from me. While the braking is causing stability concerns at high speed, it is the unintended acceleration that is most troubling. This happened again this morning twice in rapid succession that almost caused a collision. It is only a matter of time before it does cause an injury. While exiting the expressway, on the off-ramp and following another vehicle, I was undergoing moderate braking (right foot on brake pedal with pressure). Twice the vehicle hit a bump in the road and it unexpectedly and definitely accelerated after hitting the bumps. This caused the car to lurch forward towards the vehicle in front of me. The second time was very close to causing a collision. I have registered this issue multiple times over the course of a month with the manufacturer. They are not responding to the complaint in writing. The one time I was finally able to reach someone by phone they tried to tell me it was a symptom of regenerative braking. As this is my 4th vehicle with regenerative braking I can definitively say this is not a regen issue that is found on other vehicles as it is not safe. In either case, I am unable to get any technician to inspect the vehicle. There are many warnings and messages about symptoms and problems with the vehicle. Trying to sort out what warnings may pertain to this specific, dangerous issue is impossible.
NHTSA ODI #11577973
Mileage unknown · Jan 31, 2024
Power TrainVehicle Speed Control
Loss of drive power/acceleration during operation. On two occasions in the past few weeks the vehicle has become unresponsive when the accelerator is pressed. No warning lights, sounds, or other indication that something is wrong. Regenerative breaking also goes offline but regular brakes work. Car is forced to roll to a full st…
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Loss of drive power/acceleration during operation. On two occasions in the past few weeks the vehicle has become unresponsive when the accelerator is pressed. No warning lights, sounds, or other indication that something is wrong. Regenerative breaking also goes offline but regular brakes work. Car is forced to roll to a full stop and will resume function after shifting into park and then drive again.
NHTSA ODI #11569177
Mileage unknown · Jan 31, 2024
Vehicle Speed Control
I was driving down a residential street, about 20 mph. The accelerator stopped responding -- I'd step on it, but the car would only drift, as if it were in neutral. But the car was in Drive. I stopped in the middle of the road, turned the vehicle off, and then on, and the accelerator worked again.
NHTSA ODI #11569146
Mileage 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 SystemVehicle Speed Control
When drivig the car for approximately 5 miles at 55 miles per hour the car lost all power and would not accelerate coasted to the side of the road and had to have car towed.
NHTSA ODI #11565706
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
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.