NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
883 reportsMileage unknown · Jun 23, 2024
Lane DepartureService Brakes
1) when car is braking (whether it’s with foot on brake or using regenerative braking) and it goes over uneven road (example: manhole cover, pothole, uneven bricks, or anything that is not smooth pavement), the car stops braking and lurches forward. Driver has to push very hard on brake pedal to resume braking and sometimes requ…
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1) when car is braking (whether it’s with foot on brake or using regenerative braking) and it goes over uneven road (example: manhole cover, pothole, uneven bricks, or anything that is not smooth pavement), the car stops braking and lurches forward. Driver has to push very hard on brake pedal to resume braking and sometimes requires fighting against the car to get it to stop. In addition to that, there are frequent warnings that various ADAS systems are not working. They go on and off and are unrelated to weather conditions and whether the car is dirty or not.
NHTSA ODI #11595964
Mileage unknown · Jun 19, 2024
Service Brakes
My vehicle locks the brakes momentarily and repeatedly when I brake hard on a slippery or uneven surface, especially when moving downhill. It appears this safety issue is already the subject of an open NHTSA investigation, NHTSA Action Number: PE24001. I can confirm the existence of the defect involved in this invedtigation.
NHTSA ODI #11595218
Mileage unknown · Jun 18, 2024
Exterior LightingFuel/propulsion System
My vehicle has been stuck at the 1st half of SW version 2.0 and has never been able to complete the full version of 2.0 upgrade. A ticket has been open with Fisker for this issue several months now with minimal communication. A tech advised that there was a component not taking the update correctly so the rest of the install was…
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My vehicle has been stuck at the 1st half of SW version 2.0 and has never been able to complete the full version of 2.0 upgrade. A ticket has been open with Fisker for this issue several months now with minimal communication. A tech advised that there was a component not taking the update correctly so the rest of the install was backing out. The problem now is that I am no longer getting SW updates so can't get these safety recalls addressed - NHTSA Campaign Number: 24V405000 and 24V404000. As of the past couple of months, Fisker has been totally non-responsive since there are no more local techs, no response to 800 number, or email. Essentially I am at a loss as to how to get these recalls addressed. I am raising this concern with the NHTSA as issuing recalls are great, but if the fix is within a software release and several cars can not get routine software updates the procedure to address recalls is broken and Fisker should be held responsible even if dispatching techs is required.
NHTSA ODI #11595205
Mileage unknown · Jun 18, 2024
Service Brakes
The vehicle is currently running the 1st half of 2.0. When pressing the brake or having the regen braking kick in to work towards a stop, if going over a bumpy surface, the braking will disengage and the car will lunge forward. This behavior has led to several near accidents where you are trying to come to a stop but the car lur…
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The vehicle is currently running the 1st half of 2.0. When pressing the brake or having the regen braking kick in to work towards a stop, if going over a bumpy surface, the braking will disengage and the car will lunge forward. This behavior has led to several near accidents where you are trying to come to a stop but the car lurges forward for a second. This requires you to have additional stopping distance to account for the potential the car will lose braking for a moment. This was communicated to be fixed by Fisker thanks to several compaints to the agency. However, this was clearly not fixed.
NHTSA ODI #11595201
Mileage unknown · Jun 18, 2024
Back Over PreventionExterior LightingService Brakes
I do have a lot of problems with my FOO, but three month already,still no one comes to help me. 1, the reverse camera screen is not working. 2,Another issue is that the sensors on the left and right sides of the car are constantly lit up. 3,The headlights stay on when the car is in motion but turn off when stopped, and cannot …
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I do have a lot of problems with my FOO, but three month already,still no one comes to help me. 1, the reverse camera screen is not working. 2,Another issue is that the sensors on the left and right sides of the car are constantly lit up. 3,The headlights stay on when the car is in motion but turn off when stopped, and cannot be turned off. 4,Additionally, there is a wind noise coming from the top of the car above the rearview mirror. 5, the light in the rear passenger seat intermittently turns on and cannot be turned off. 6, The brakes vibrate when you brake, and they also vibrate when you accelerate. 7, driver side screen shows the issues I have not ideal what are they?
NHTSA ODI #11595101
Mileage unknown · Jun 18, 2024
Air BagsForward Collision AvoidanceService BrakesCrash
I was merging on to Interstate 5 when the vehicle in front stopped very hard to avoid hitting construction equipment that had likely fallen off a truck. I was not able to stop the car in time as the brakes seemed to not be effective. The collision warning braking system did not activate. The airbags did not activate which surpri…
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I was merging on to Interstate 5 when the vehicle in front stopped very hard to avoid hitting construction equipment that had likely fallen off a truck. I was not able to stop the car in time as the brakes seemed to not be effective. The collision warning braking system did not activate. The airbags did not activate which surprised the Highway Patrol and collision center personnel.
NHTSA ODI #11595028
15,000 miles · Jun 17, 2024
Electrical SystemService Brakes, Hydraulic
The contact owns a 2023 Fisker Ocean. The contact stated while driving approximately 35 MPH and depressing the brake pedal, the vehicle was hesitating before the vehicle started slowing as needed. The contact stated that the ABS warning light was illuminated. Additionally, the contact stated that the key fob was not recognized b…
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The contact owns a 2023 Fisker Ocean. The contact stated while driving approximately 35 MPH and depressing the brake pedal, the vehicle was hesitating before the vehicle started slowing as needed. The contact stated that the ABS warning light was illuminated. Additionally, the contact stated that the key fob was not recognized by the vehicle and the contact was unable to open the doors. The contact had replaced the key fob battery several times. The contact stated that a factory mechanic was at the residence and diagnosed and determined that a software update was needed to be completed. The vehicle was repaired. The contact stated that the failure had reoccurred. The manufacturer was informed of the failure. The failure mileage was approximately 15,000.
NHTSA ODI #11594889
Mileage unknown · Jun 17, 2024
StructureUnknown Or Other
On June 12, 2024 I first noticed the door handle on the Front RH passenger door stayed extended when the vehicle was locked at the end of a short trip in town. When locked, the door handles on the Fisker Ocean are designed to retract flush with the surface of the door. The extended door handle was locked, so the car door could…
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On June 12, 2024 I first noticed the door handle on the Front RH passenger door stayed extended when the vehicle was locked at the end of a short trip in town. When locked, the door handles on the Fisker Ocean are designed to retract flush with the surface of the door. The extended door handle was locked, so the car door could not be opened (as expected). The next morning, I unlocked the car using my key fob, causing the other door handles to extend. I then locked the car with the key fob, and all of the door handles retracted, except for the handle front RH passenger door. Once again, I unlocked the car, leaned over from the driver's side, and found that pulling on the interior door handle would not open the unlocked front passenger door. Keeping the car in Park, I exited through the driver's side door, walked around to the front passenger door, pulled on the extended handle to attempt to open that door -- after pulling on the extended handle, the door opened after two attempts. Closing that front RH passenger door once more, I returned to the driver's seat, leaned over and found that I was able to then open the front RH passenger side door by pulling the interior door handle to open that door. Testing further, I determined that the interior door handle would not open that door anytime the car was unlocked immediately after driving, or after being put into park (which unlocks the doors and extends the door handles on the Fisker Ocean. I have notified Fisker support and am waiting for a response to get this door handle / door latch mechanism inspected and repaired. I can provide video clips showing the conditions outlined above. Note: This 2023 Fisker Ocean One was manufactured in 8/2023 and I took possession of this vehicle on 12/15/2023. The installed software version on the car is Ocean OS 2.0
NHTSA ODI #11594714
Mileage unknown · Jun 16, 2024
Service BrakesSteeringUnknown Or OtherInjury
Several potential dangerous situations have occurred with this car. 1. Brakes often fail on first attempt, only stops with pumping them. 2. Car randomly swerved to right twice, each time stopping by hitting something. 3. Car has locked itself and am unable to unlock with key fob, had to manually force it open. 4. Accelerator…
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Several potential dangerous situations have occurred with this car. 1. Brakes often fail on first attempt, only stops with pumping them. 2. Car randomly swerved to right twice, each time stopping by hitting something. 3. Car has locked itself and am unable to unlock with key fob, had to manually force it open. 4. Accelerator pedal has weird clicking to it. 5. Strange cracking sound from solar roof. It is impossible to get any type of service for this car as Fisker is unresponsive to phone calls or email attempts. The tech in the Delaware region has been terminated and since the car is undeliverable it is impossible to get to the closest one which seems to be Atlanta. No way of knowing if they will ever service the car.
NHTSA ODI #11594667
Mileage unknown · Jun 16, 2024
Electrical SystemPower TrainService Brakes
When coming to a stop, the brakes “slip” causing the braking distance to increase. This significantly increases the potential of a crash. Secondly, the car puts itself in PARK and engages parking brake when at a stop sign or traffic light. This significantly increases the potential of a crash. Thirdly, the display panel notes a …
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When coming to a stop, the brakes “slip” causing the braking distance to increase. This significantly increases the potential of a crash. Secondly, the car puts itself in PARK and engages parking brake when at a stop sign or traffic light. This significantly increases the potential of a crash. Thirdly, the display panel notes a brake system and ADAS malfunction while driving. Lastly, the driver’s side rear taillight of the vehicle doesn’t work and requires new part to fix it - which isn’t available. This significantly increases the risk of a crash.
NHTSA ODI #11594638
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.