NHTSA owner reports · September 18, 2026 snapshot.
Unknown Or Other complaints
283 reportsClear category filterMileage unknown · Mar 26, 2025
Electrical SystemUnknown Or Other
I received an update without any prior notice, and my vehicle stopped abruptly in the middle of the highway, making it impossible to move or start for a few minutes. I had to reset it before I could continue driving. Unfortunately, this issue keeps occurring while I'm on the road. It seems that software updates have been pushed,…
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I received an update without any prior notice, and my vehicle stopped abruptly in the middle of the highway, making it impossible to move or start for a few minutes. I had to reset it before I could continue driving. Unfortunately, this issue keeps occurring while I'm on the road. It seems that software updates have been pushed, and the vehicle consistently stops whenever these updates happen during driving.
NHTSA ODI #11650827
Mileage unknown · Mar 26, 2025
Forward Collision AvoidanceLane DepartureUnknown Or Other
More bugs and problems after partial OTA to version 2.2.2 than before. Constant alarms and warnings that ADAS is not functioning. Driver alert monitor stopped the car in the middle of the road because it said I was not paying attention. The biggest problem is the car no longer detects the key FOB inside the car. New battery and…
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More bugs and problems after partial OTA to version 2.2.2 than before. Constant alarms and warnings that ADAS is not functioning. Driver alert monitor stopped the car in the middle of the road because it said I was not paying attention. The biggest problem is the car no longer detects the key FOB inside the car. New battery and I can unlock the car from 100+ft away. But once in the car I'm forced to hold it to the NFC. One time I started the car, jumped out to grab something from inside the house, left my key there, then drove off. With no key in the car I was able to dive about 3 miles to the store. Somehow I was able to put it back into D and get home without it shutting down and asking to hold the FOB to the NFC again. The other safety related issue is the small driver screen will not dim. No matter where I have the brightness setting manually set or on auto the screen is always at 100% At night it is very bright and is not at all pleasant to drive with. I have started putting a piece of thin masking tape over it to dim at night. I can still see mostly see things that pop up.
NHTSA ODI #11650773
Mileage unknown · Mar 21, 2025
Power TrainUnknown Or Other
the car goes into neutral while driving. (Loss of POWER) Happened over 10 times. I need to pull over , come to a complete stop and start the car again. It has happened on the highway and on regular roads. Had the water pump replaced twice and a new 12 v battery installed. The problem has gotten better since but still happens. th…
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the car goes into neutral while driving. (Loss of POWER) Happened over 10 times. I need to pull over , come to a complete stop and start the car again. It has happened on the highway and on regular roads. Had the water pump replaced twice and a new 12 v battery installed. The problem has gotten better since but still happens. the first indication is the red batterie light turns on and then car goes in neutral.
NHTSA ODI #11649830
Mileage unknown · Mar 18, 2025
Electrical SystemService BrakesUnknown Or Other
While I was travelling and out of town there was an OTA update (2.2 )to address the issued recalls on my car on 2/25/2025 (OTA update 2.2 1/3) followed with another one OTA update (2.2) on 2/28/2025. In anticipation of the OTA update I had to replace the battery with a new battery in December 2024. In early March, I remotely che…
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While I was travelling and out of town there was an OTA update (2.2 )to address the issued recalls on my car on 2/25/2025 (OTA update 2.2 1/3) followed with another one OTA update (2.2) on 2/28/2025. In anticipation of the OTA update I had to replace the battery with a new battery in December 2024. In early March, I remotely checked on that status of my car and realized that the car is dead. When I returned home the car was inoperable due to drained battery. After extensive effort and cost of another battery I was able to get the car to turn on. However, I noticed that even though the main monitor indicated 2.2; one of the recalls 24V405000 (Warning Lights OTA-2.1) has not been deployed.
NHTSA ODI #11648897
Mileage unknown · Mar 11, 2025
Electrical SystemEngineUnknown Or Other
The car stopped working, is now bricked in my garage. 3 different techs came to check it and all said the car gives them weird codes. One of the techs said the front unit motor needs to be replaced which will end up costing almost $8k. but it is not guaranteed that will fix the car. This is insane. I do not know what to do, as w…
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The car stopped working, is now bricked in my garage. 3 different techs came to check it and all said the car gives them weird codes. One of the techs said the front unit motor needs to be replaced which will end up costing almost $8k. but it is not guaranteed that will fix the car. This is insane. I do not know what to do, as we paid cash for it with our savings and now had to lease another car to be able to get to work.
NHTSA ODI #11647691
Mileage unknown · Mar 10, 2025
Unknown Or Other
The Over-The-Air (OTA) team pushed updates out to my car without warning...without any kind of notification. I was extremely upset as many cars from other owners got bricked. Luckily mine didn't get bricked but the full 2.2 updates did NOT get pushed. They picked and chose which modules they felt needed updated. So my car says i…
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The Over-The-Air (OTA) team pushed updates out to my car without warning...without any kind of notification. I was extremely upset as many cars from other owners got bricked. Luckily mine didn't get bricked but the full 2.2 updates did NOT get pushed. They picked and chose which modules they felt needed updated. So my car says it is at 2.2.2. I drove from Cleveland to Columbus to get my extra Key Fob and NFC cards programmed and was told (and I verified) that my PKC version was only version 09. This is so old that they were unable to even attempt to pair by fob/cards as it could brick the car. This is so disappointing and directly related to the OTA team not pushing the full 2.2 update which is supposed to address the recalls. This makes me very uncomfortable and upset not knowing if all the software recalls were completely addressed. The fact is...2.2 is supposed to address the NHTSA software recalls so that is what we should get. This is the certified version. Pushing partial updates out should not be acceptable.
NHTSA ODI #11647522
Mileage unknown · Mar 8, 2025
Unknown Or Other
As part of Fisker recall, Software version 2.2 was pushed to my vehicle outside of agreed window. As a result, I am ending up with Partial update. Since I do not know what was installed/not installed, I do not know if my vehicle is safe. I need Fisker to fix as soon as possible so that I feel safe on the road.
NHTSA ODI #11647171
Mileage unknown · Mar 8, 2025
Fuel/propulsion SystemUnknown Or Other
Our 2023 Fisker Ocean Ultra has lost power, imperiling our family on a busy urban street. Further, after an unannounced and unauthorized software update last week, I have lost the use of the vehicle's central control screen, keeping me from controlling any functions (synchronization to my mobile telephone, the radio, how I contr…
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Our 2023 Fisker Ocean Ultra has lost power, imperiling our family on a busy urban street. Further, after an unannounced and unauthorized software update last week, I have lost the use of the vehicle's central control screen, keeping me from controlling any functions (synchronization to my mobile telephone, the radio, how I control charging, mapping functions, and critical to the car's safe operation, HVAC and defrost).
NHTSA ODI #11647160
Mileage unknown · Mar 6, 2025
Electrical SystemPower TrainUnknown Or Other
My car pushed required recall updates without any indication that it was coming and the next day or two the battery died and car is now showing a red light at charging port and is stuck in neutral. I only received 1/3 updates so I don’t know if that was also the issue. It was executed poorly and bricked my car. I have no idea ho…
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My car pushed required recall updates without any indication that it was coming and the next day or two the battery died and car is now showing a red light at charging port and is stuck in neutral. I only received 1/3 updates so I don’t know if that was also the issue. It was executed poorly and bricked my car. I have no idea how to unbrick it to life.
NHTSA ODI #11646837
Mileage unknown · Mar 6, 2025
Unknown Or Other
I recently encountered a series of issues with my Fisker Ocean One (FOO) following a partial software upgrade at A1 Autobody in Fremont, CA. The service center performed an incomplete software update, leaving several modules pending for over-the-air (OTA) updates to reach version 2.2. [XXX] Software Version Discrepancies Ini…
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I recently encountered a series of issues with my Fisker Ocean One (FOO) following a partial software upgrade at A1 Autobody in Fremont, CA. The service center performed an incomplete software update, leaving several modules pending for over-the-air (OTA) updates to reach version 2.2. [XXX] Software Version Discrepancies Initially, my vehicle's dashboard displayed the previous 2.1 version, indicating the absence of the critical T-REX upgrade. Unexpectedly, the dashboard later showed version 2.2 (1/3) without any notification from Fisker regarding this partial update. This lack of communication left me uncertain about the status and completeness of the software installation. Fisker App Connectivity Issues Concurrently, the Fisker App ceased functioning correctly, consistently showing my car as "offline." This issue prevents me from remotely unlocking my vehicle, a significant concern given the frequent unreliability of the key fob. This problem has been reported by other Fisker owners as well. reddit.com [XXX] [XXX] [XXX] Safety and Reliability Concerns The inability to access my vehicle remotely poses safety risks, especially if the key fob fails. Additionally, the incomplete software update may affect other vehicle functionalities, potentially compromising overall safety and performance. Steps Taken and Recommendations I have attempted to resolve the app connectivity issue by reinstalling the Fisker App and re-pairing my device, but these efforts have been unsuccessful. I am seeking assistance to restore the app's functionality and complete the software upgrade to version 2.2 to ensure all systems operate as intended. I urge Fisker to improve communication regarding software updates and provide timely support to address these issues, ensuring a safe and reliable experience for all owners. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #11646818
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.