NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes complaints
302 reportsClear category filterMileage unknown · Feb 13, 2025
Forward Collision AvoidanceService BrakesUnknown Or Other
Urgent Safety Recall Complaint – Lack of Updates & Service Access Dear NHTSA, I am writing to express my serious concerns about the ongoing safety recall process for my vehicle, including NHTSA Recall Campaign Numbers 24V865000 and 24V623000. There are currently six active recalls, and I have not received the 2.2 OTA update t…
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Urgent Safety Recall Complaint – Lack of Updates & Service Access Dear NHTSA, I am writing to express my serious concerns about the ongoing safety recall process for my vehicle, including NHTSA Recall Campaign Numbers 24V865000 and 24V623000. There are currently six active recalls, and I have not received the 2.2 OTA update to address braking system failures, persistent ADAS warnings, and the missing pedestrian alert noise, all of which pose significant safety risks. I have experienced brake slippage and loss of function, especially over rough terrain, which remains unaddressed. ADAS warnings continue to be distracting and dangerous, and the required pedestrian alert sounds are missing. Despite attempted updates, many vehicles, including mine, are still affected. Owners report that 2-5% of vehicles become undrivable post-update, requiring up to 48 hours to install, with some needing another 48 hours for partial fixes. Only 10% of the fleet has been updated successfully after weeks of attempts, and under 30% of updates have fully resolved issues. Adding to the frustration, there are only about 20 service personnel nationwide, with very few traveling to assist affected owners. This leaves many of us without timely support and forced to pay out of pocket for alternative transportation. This process is deeply flawed, and I urge NHTSA to investigate the recall system’s failures, update delays, and lack of adequate service access. These critical safety concerns demand immediate attention. Thank you for addressing this urgent matter. Sincerely,
NHTSA ODI #11642398
Mileage unknown · Feb 12, 2025
Forward Collision AvoidanceService BrakesUnknown Or Other
NHTSA recall campaign numbers for the software recalls are 24V865000 and 24V623000, or others can be found in this link for 2023 Fisker Oceans [XXX] . I have had 1 failed OTA attempt. So far OTA updates have not been completed on my car and when I've asked around at shops, they have said that my car may be undrivable. I only ha…
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NHTSA recall campaign numbers for the software recalls are 24V865000 and 24V623000, or others can be found in this link for 2023 Fisker Oceans [XXX] . I have had 1 failed OTA attempt. So far OTA updates have not been completed on my car and when I've asked around at shops, they have said that my car may be undrivable. I only have this one and need it and can't afford to have it in the shop or pay for a rental. I also don't have a 48-hour window for the update to actually happen. The shops near me are asking me to pay, and I should not have to pay for this service. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #11642393
Mileage unknown · Feb 12, 2025
Forward Collision AvoidanceService Brakes
I received a notification for a recall for the water pump many months ago. To this day, the water pump has not been replaced. No one has reached out to me to set up the recall repair. I have tried to find local car repair shops, but they won't do it as it is part of a national recall. Also, the ADAS system is constantly malfun…
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I received a notification for a recall for the water pump many months ago. To this day, the water pump has not been replaced. No one has reached out to me to set up the recall repair. I have tried to find local car repair shops, but they won't do it as it is part of a national recall. Also, the ADAS system is constantly malfunctioning, giving errors like collision warning not working, lane assist not working, blind spot monitoring not working. This has been a problem since I received the car. Adaptive cruise control has never worked. The braking system was supposed to be fixed with the 2.2 software update. It seemed to work for a few weeks, now the original problem is back where the braking regeneration turns off suddenly causing the car to lose control. This happens at random.
NHTSA ODI #11642390
Mileage unknown · Feb 12, 2025
Electrical SystemService BrakesUnknown Or Other
I have several recalls on this vehicle that have yet to be preformed due to lack of Fisker helping with the cost of recalled items.
NHTSA ODI #11642387
Mileage unknown · Feb 12, 2025
Forward Collision AvoidanceService BrakesVehicle Speed Control
while entering a freeway the car in front braked suddenly and in the process of braking in response our Fisker did its characteristic "chatter" as the ABS first activated and then stopped braking all together causing us to hit the car ahead. Had the brakes not misbehaved the turning movement to avoid the impact would have allow…
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while entering a freeway the car in front braked suddenly and in the process of braking in response our Fisker did its characteristic "chatter" as the ABS first activated and then stopped braking all together causing us to hit the car ahead. Had the brakes not misbehaved the turning movement to avoid the impact would have allowed the collision to be avoided. Our Tbox has not worked since getting the car. Numerous fixes before Fisker went bankrupt did not remain in place and the navigation map has been useless. But much worse is that bc the Tbox is not working we are unable to get the OTA update and must pay for a manual update which has been quoted at $450, PLUS the cost of getting the Tbox reset and equipped with a resettable fuse (another $250).
NHTSA ODI #11642372
Mileage unknown · Feb 12, 2025
Electrical SystemForward Collision AvoidanceService Brakes
Experiencing issues with water pump recall, 9 volt battery needing to be replaced due to recall work, door handle safety issues (the NFC on driver door does not work and vehicle will not open the door if remote is dead), I had to pay out of pocket for recall repairs
NHTSA ODI #11642366
Mileage unknown · Feb 12, 2025
Forward Collision AvoidanceService BrakesUnknown Or Other
Fisker Inc has gone out of business. A mandatory recall has been issued and the bankruptcy court has assigned a trustee to ensure vehicles are updated to version 2.2 to address safety recall issues. The update to 2.2 has been extremely unpredictable and the trustee has not been able to complete this recall. I had to take private…
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Fisker Inc has gone out of business. A mandatory recall has been issued and the bankruptcy court has assigned a trustee to ensure vehicles are updated to version 2.2 to address safety recall issues. The update to 2.2 has been extremely unpredictable and the trustee has not been able to complete this recall. I had to take private services and pay money to get software update done. Of the cars that were updated, like mine, almost immediately the estimated range has been drastically reduced. The cars were marketed as getting up to 360 miles on 100% charge. Since the recall update, they now get somewhere around 220 miles on a 100% charge. That’s more than 100 miles lost. I had a technician analyze it with approved Fisker software, and he found that the rear motor is now throwing “flux error codes” and not functioning properly. This is causing an electrical issue draining the batteries much quicker than they should be. I spent $1000 for diagnostic work and there is no fix at the moment however the trustee is still responsible for rolling out this buggy software and possibly damaging more cars with each remote installation.
NHTSA ODI #11642364
Mileage unknown · Feb 12, 2025
Service BrakesUnknown Or Other
I having brakes issues. Brakes does not work sometimes and also it suddenly loses grip during bumpy ride. Below are the recalls which happened last year which Fisker did not fix yet. 1. Water Pump replacement: Fisker did not replace water pump for me and I had to pay out of pocket to get it replaced by third party technician. 2…
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I having brakes issues. Brakes does not work sometimes and also it suddenly loses grip during bumpy ride. Below are the recalls which happened last year which Fisker did not fix yet. 1. Water Pump replacement: Fisker did not replace water pump for me and I had to pay out of pocket to get it replaced by third party technician. 2. Software update 2.2 to fix brake issues: I did not receive any updates and per Fisker mail notice, they said that they will fix it by end of Dec 2024. I tried to reach them to the phone number which they gave but there is no response from them. Attached the water pump replacement invoice.
NHTSA ODI #11642354
Mileage unknown · Feb 12, 2025
Forward Collision AvoidanceService BrakesUnknown Or Other
1. I received letter about safety recall campaign TSB10062408 - Breaking improvement software update in September 2024. Later Fisker released software version 2.2 for the recall. However It is Feb. 2025 now, I still have not received software update (via their OTA system). 2. Unreliable Advanced Driver Assistance Systems (ADAS)…
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1. I received letter about safety recall campaign TSB10062408 - Breaking improvement software update in September 2024. Later Fisker released software version 2.2 for the recall. However It is Feb. 2025 now, I still have not received software update (via their OTA system). 2. Unreliable Advanced Driver Assistance Systems (ADAS) - warning message, such as lane keep assistance feature, blind spot warning, etc not available displayed on dashboard from time to time. 3. Infotainment screen black out into loop. 4. Unable to open window using key fob. 5. Key fob drain battery fast, have to replace battery every 2 or 3 month. 6. Have to pay $185.74 labor fee to replace water pump for recall campaign TSB30032401.
NHTSA ODI #11642347
Mileage unknown · Feb 12, 2025
Electrical SystemService BrakesStructure
I have several recalls on this vigil that I have not been able to fix. NHTSA CampainNumber 24V499 Water Pump issue. The door handle issues. 12 volt battery going out several times. Brake and regenerative breaking issues.
NHTSA ODI #11642337
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.
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