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2020 Porsche Taycan

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2020 Porsche Taycan do not stand out strongly from the model-year median of 44.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 9 of 91 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Electrical System. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 22 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 15 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

1 crash reports1 fire reports0 injury reports

Vehicle Speed Control complaints

3 reports
Clear category filter
Mileage unknown · Jun 25, 2026
Electrical SystemSteeringVehicle Speed Control

While driving my Porsche Taycan through a high-speed intersection, the vehicle suddenly displayed battery and chassis system error messages instructing me to pull over immediately. Before I could safely move the vehicle to the side of the road, it completely lost propulsion, speed control, and steering capability, causing the ve…

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While driving my Porsche Taycan through a high-speed intersection, the vehicle suddenly displayed battery and chassis system error messages instructing me to pull over immediately. Before I could safely move the vehicle to the side of the road, it completely lost propulsion, speed control, and steering capability, causing the vehicle to abruptly slow to 0 mph in active traffic and leaving me stranded in the middle of the roadway. This created an immediate safety hazard, as approaching vehicles nearly collided with my car because it effectively performed an unexpected emergency stop without warning. Approximately one month earlier, the vehicle experienced the exact same failure while parked, displaying battery and chassis errors and losing power and steering functionality. The vehicle was towed to an authorized Porsche dealership, where it remained for approximately one month; however, the dealer was unable to diagnose the problem and returned the vehicle to me, stating that no fault could be found. Just two days after the vehicle was returned, the identical failure occurred again while I was driving. After restarting the vehicle multiple times at the roadside, I was eventually able to move it to a safer location, where it failed again shortly thereafter. The vehicle is currently at the Porsche dealership and is available for inspection. The dealership has indicated that the issue may be related to the high-voltage battery but has not yet identified the root cause or completed repairs. The only prior warning of this defect was the nearly identical battery and chassis system failure that occurred approximately one month before this incident.

NHTSA ODI #11746390

Mileage unknown · Mar 2, 2023
Electrical SystemPower TrainVehicle Speed Control

I was driving in the fast/lane of the freeway, and suddenly the car flashed red "Electrical System Error" "Park Vehicle in Safe Place". The car immediately started to decellerate on its own and I didn't have time to go over to the right so had to move into the left shoulder of the freeway. I was stuck in the middle of the freewa…

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I was driving in the fast/lane of the freeway, and suddenly the car flashed red "Electrical System Error" "Park Vehicle in Safe Place". The car immediately started to decellerate on its own and I didn't have time to go over to the right so had to move into the left shoulder of the freeway. I was stuck in the middle of the freeway, with cars driving fast coming around a bend of the freeway behind me having to swerve out of the way. Cops finally came to give me cover from behind. Dealership still trying to figure out what the issue is.

NHTSA ODI #11509850

Mileage unknown · May 22, 2021
Vehicle Speed Control

After a software “upgrade” the speed control features were stated to be “unavailable” however the car still was in cruise and accelerator was depressed without indicating that to me as the driver. Car accelerated unintentionally on highway and emergency action had to be taken to avoid accident.

NHTSA ODI #11418125

Official recalls

12

25V896000 · Back Over Prevention: Sensing System: Camera

Dec 19, 2025

Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cayenne, Cayenne E-Hybrid, 2020-2025 911, Taycan, 2024-2025 Panamera, and 2025 Panamera E-Hybrid vehicles. The rearview camera image may not display when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

Consequence & remedy

Consequence: A rearview image that does not display properly reduces the driver's view behind the vehicle, increasing the risk of a crash.

Remedy: Dealers will update the driver assistance software, free of charge. Owner notification letters were mailed February 13, 2026. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ASB2. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning January 19, 2026.

24V731000 · Electrical System:propulsion System:traction Battery; Electrical System:software

Oct 1, 2024

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2023 Taycan vehicles. The high-voltage battery may experience a short circuit within the battery module.

Consequence & remedy

Consequence: A short circuit in a high-voltage battery increases the risk of a fire.

Remedy: Owners are advised to only charge their vehicles to a maximum of 80% battery capacity until the repair has been completed. Dealers will replace the affected modules in the high-voltage battery, free of charge. Owner notification letters were mailed November 22, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB5. This recall expands previous recall numbers 23V-840, 24V-215, and 24V-217. Vehicles previously repaired under the prior recalls will need to have the new remedy completed.

Additional source detail variants (2)

Electrical System:propulsion System:traction Battery

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2023 Taycan vehicles. The high-voltage battery may experience a short circuit within the battery module.

Consequence: A short circuit in a high-voltage battery increases the risk of a fire.

Remedy: Owners are advised to only charge their vehicles to a maximum of 80% battery capacity until the repair has been completed. Dealers will replace the affected modules in the high-voltage battery, free of charge. Owner notification letters were mailed November 22, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB5. This recall expands previous recall numbers 23V-840, 24V-215, and 24V-217. Vehicles previously repaired under the prior recalls will need to have the new remedy completed.

Electrical System:software

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2023 Taycan vehicles. The high-voltage battery may experience a short circuit within the battery module.

Consequence: A short circuit in a high-voltage battery increases the risk of a fire.

Remedy: Owners are advised to only charge their vehicles to a maximum of 80% battery capacity until the repair has been completed. Dealers will replace the affected modules in the high-voltage battery, free of charge. Owner notification letters were mailed November 22, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB5. This recall expands previous recall numbers 23V-840, 24V-215, and 24V-217. Vehicles previously repaired under the prior recalls will need to have the new remedy completed.

24V732000 · Electrical System:propulsion System:traction Battery; Electrical System:software

Oct 1, 2024

Porsche Cars North America, Inc. (Porsche) is recalling certain 2021-2024 Taycan vehicles. The high-voltage battery may experience a short circuit within the battery module.

Consequence & remedy

Consequence: A short circuit in a high-voltage battery increases the risk of a fire.

Remedy: Dealers will install advanced diagnostic software as the final remedy, anticipated to be available in the first quarter of 2025. Porsche will monitor available online vehicle data and contact owners as necessary, to advise them to only charge the vehicle to 80% capacity until the battery can be replaced. For vehicles in which online data is unavailable, dealers will perform a diagnostic test and replace the battery module assembly, if necessary and advise owners to only charge to 80% capacity. Repairs will be performed free of charge. Owner notification letters were mailed August 6, 2025. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's numbers for this recall are ARB6 and ARB7. This recall expands and replaces previous recall numbers 23V-840, 24V-215, and 24V-217.

Additional source detail variants (2)

Electrical System:propulsion System:traction Battery

Porsche Cars North America, Inc. (Porsche) is recalling certain 2021-2024 Taycan vehicles. The high-voltage battery may experience a short circuit within the battery module.

Consequence: A short circuit in a high-voltage battery increases the risk of a fire.

Remedy: Dealers will install advanced diagnostic software as the final remedy, anticipated to be available in the first quarter of 2025. Porsche will monitor available online vehicle data and contact owners as necessary, to advise them to only charge the vehicle to 80% capacity until the battery can be replaced. For vehicles in which online data is unavailable, dealers will perform a diagnostic test and replace the battery module assembly, if necessary and advise owners to only charge to 80% capacity. Repairs will be performed free of charge. Owner notification letters were mailed August 6, 2025. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's numbers for this recall are ARB6 and ARB7. This recall expands and replaces previous recall numbers 23V-840, 24V-215, and 24V-217.

Electrical System:software

Porsche Cars North America, Inc. (Porsche) is recalling certain 2021-2024 Taycan vehicles. The high-voltage battery may experience a short circuit within the battery module.

Consequence: A short circuit in a high-voltage battery increases the risk of a fire.

Remedy: Dealers will install advanced diagnostic software as the final remedy, anticipated to be available in the first quarter of 2025. Porsche will monitor available online vehicle data and contact owners as necessary, to advise them to only charge the vehicle to 80% capacity until the battery can be replaced. For vehicles in which online data is unavailable, dealers will perform a diagnostic test and replace the battery module assembly, if necessary and advise owners to only charge to 80% capacity. Repairs will be performed free of charge. Owner notification letters were mailed August 6, 2025. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's numbers for this recall are ARB6 and ARB7. This recall expands and replaces previous recall numbers 23V-840, 24V-215, and 24V-217.

24V455000 · Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings

Jun 19, 2024

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2025 Taycan vehicles. The front brake hoses can develop cracks and leak brake fluid.

Consequence & remedy

Consequence: A brake fluid leak can reduce braking performance and extend the distance required to stop, increasing the risk of a crash.

Remedy: Dealers will replace the front brake hoses, free of charge. Owner notification letters were mailed on January 29, 2025. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB0.

23V347000 · Electrical System: Instrument Cluster/panel; Service Brakes, Hydraulic

May 16, 2023

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2022 Taycan vehicles. An incorrect warning indicator with an incorrect color is displayed in the instrument cluster when notifying owners of worn brake pads. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 135, "Light Vehicle Brake Systems," and 101, "Control and Displays."

Consequence & remedy

Consequence: An incorrect warning indicator may be misinterpreted and result in driving on worn brake pads with reduced brake performance, increasing the risk of a crash.

Remedy: Dealers will update the software for the instrument cluster, free of charge. Owner notification letters are expected to be mailed July 14, 2023. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is APA5.

Additional source detail variants (2)

Electrical System: Instrument Cluster/panel

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2022 Taycan vehicles. An incorrect warning indicator with an incorrect color is displayed in the instrument cluster when notifying owners of worn brake pads. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 135, "Light Vehicle Brake Systems," and 101, "Control and Displays."

Consequence: An incorrect warning indicator may be misinterpreted and result in driving on worn brake pads with reduced brake performance, increasing the risk of a crash.

Remedy: Dealers will update the software for the instrument cluster, free of charge. Owner notification letters are expected to be mailed July 14, 2023. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is APA5.

Service Brakes, Hydraulic

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2022 Taycan vehicles. An incorrect warning indicator with an incorrect color is displayed in the instrument cluster when notifying owners of worn brake pads. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 135, "Light Vehicle Brake Systems," and 101, "Control and Displays."

Consequence: An incorrect warning indicator may be misinterpreted and result in driving on worn brake pads with reduced brake performance, increasing the risk of a crash.

Remedy: Dealers will update the software for the instrument cluster, free of charge. Owner notification letters are expected to be mailed July 14, 2023. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is APA5.

22V404000 · Back Over Prevention: Sensing System: Camera; Power Train:automatic Transmission:control Module (tcm/pcm/tecm)

Jun 8, 2022

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2022 Taycan vehicles. A software error could cause the center screen (including rearview camera image) and the touch control panel remain to black directly after the ignition is activated. Also, the Real-Top-View (including rearview camera image) could display a flickering image. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Consequence & remedy

Consequence: A malfunctioning center screen or touch control panel may obstruct the driver's view of camera assisted driving functions, increasing the risk of a crash.

Remedy: Dealers will install new software, free of charge. Owner notification letters are expected to be mailed August 5, 2022. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is ANA6.

Additional source detail variants (2)

Back Over Prevention: Sensing System: Camera

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2022 Taycan vehicles. A software error could cause the center screen (including rearview camera image) and the touch control panel remain to black directly after the ignition is activated. Also, the Real-Top-View (including rearview camera image) could display a flickering image. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Consequence: A malfunctioning center screen or touch control panel may obstruct the driver's view of camera assisted driving functions, increasing the risk of a crash.

Remedy: Dealers will install new software, free of charge. Owner notification letters are expected to be mailed August 5, 2022. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is ANA6.

Power Train:automatic Transmission:control Module (tcm/pcm/tecm)

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2022 Taycan vehicles. A software error could cause the center screen (including rearview camera image) and the touch control panel remain to black directly after the ignition is activated. Also, the Real-Top-View (including rearview camera image) could display a flickering image. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Consequence: A malfunctioning center screen or touch control panel may obstruct the driver's view of camera assisted driving functions, increasing the risk of a crash.

Remedy: Dealers will install new software, free of charge. Owner notification letters are expected to be mailed August 5, 2022. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is ANA6.

22V278000 · Seats

Apr 26, 2022

Porsche Cars of North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan vehicles. The driver and passenger seat wire harness could become damaged during horizontal seat adjustment.

Consequence & remedy

Consequence: A damaged seat wire harness may deactivate air bags, increasing the risk of injury in a crash.

Remedy: Dealers will inspect the seat wire harness for damage, add fabric tape to secure the harness, and repair damaged wires as necessary, free of charge. Owner notification letters were mailed July 22, 2022. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is ANA5.

22V100000 · Seat Belts: Rear/other:buckle Assembly; Seat Belts:rear/other:anchorage

Feb 22, 2022

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan vehicles equipped with an optional rear center seat. The center seat belt buckle wiring harness may obstruct access to the right rear seat lower child seat anchors, preventing a child seat from being properly secured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, "Child Restraint Anchorage Systems."

Consequence & remedy

Consequence: An improperly secured child seat increases the risk of injury during a crash.

Remedy: Dealers will reroute and secure the center rear seat belt buckle wiring harness and, as necessary, replace a damaged buckle, free of charge. Owner notification letters were mailed April 7, 2022. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ANA4.

Additional source detail variants (2)

Seat Belts:rear/other:anchorage

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan vehicles equipped with an optional rear center seat. The center seat belt buckle wiring harness may obstruct access to the right rear seat lower child seat anchors, preventing a child seat from being properly secured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, "Child Restraint Anchorage Systems."

Consequence: An improperly secured child seat increases the risk of injury during a crash.

Remedy: Dealers will reroute and secure the center rear seat belt buckle wiring harness and, as necessary, replace a damaged buckle, free of charge. Owner notification letters were mailed April 7, 2022. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ANA4.

Seat Belts: Rear/other:buckle Assembly

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan vehicles equipped with an optional rear center seat. The center seat belt buckle wiring harness may obstruct access to the right rear seat lower child seat anchors, preventing a child seat from being properly secured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, "Child Restraint Anchorage Systems."

Consequence: An improperly secured child seat increases the risk of injury during a crash.

Remedy: Dealers will reroute and secure the center rear seat belt buckle wiring harness and, as necessary, replace a damaged buckle, free of charge. Owner notification letters were mailed April 7, 2022. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ANA4.

21V911000 · Suspension:rear

Nov 19, 2021

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020 Taycan vehicles. The front and rear upper control arm screw connections on the rear axle may be loose.

Consequence & remedy

Consequence: A loose control arm connection may fail, causing a loss of vehicle stability and increasing the risk of a crash.

Remedy: Dealers will replace the screw connections, free of charge. Owner notification letters were expected to be mailed January 13, 2022. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMC3.

21V794000 · Exterior Lighting:hazard Flashing Warning Lights

Oct 13, 2021

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan vehicles. The pre-collision automatic hazard lights may activate in non-emergency situations. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Consequence & remedy

Consequence: An activation of hazard lights in non-emergency situations could confuse other drivers, increasing the risk of a crash.

Remedy: Dealers will reprogram the hazard lights, free of charge. Owner notification letters were mailed December 2, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMC1.

21V697000 · Service Brakes, Hydraulic:critical Fasteners; Service Brakes, Hydraulic:foundation Components

Sep 8, 2021

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 911 Carrera and Taycan vehicles. The pressure input rod connection on the brake booster may be loose and could detach.

Consequence & remedy

Consequence: A detached pressure input rod will cause the brake pedal to fail, increasing the risk of a crash.

Remedy: Dealers will repair or replace the brake booster as necessary, free of charge. Owner notification letters were mailed October 28, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB9.

Additional source detail variants (2)

Service Brakes, Hydraulic:critical Fasteners

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 911 Carrera and Taycan vehicles. The pressure input rod connection on the brake booster may be loose and could detach.

Consequence: A detached pressure input rod will cause the brake pedal to fail, increasing the risk of a crash.

Remedy: Dealers will repair or replace the brake booster as necessary, free of charge. Owner notification letters were mailed October 28, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB9.

Service Brakes, Hydraulic:foundation Components

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 911 Carrera and Taycan vehicles. The pressure input rod connection on the brake booster may be loose and could detach.

Consequence: A detached pressure input rod will cause the brake pedal to fail, increasing the risk of a crash.

Remedy: Dealers will repair or replace the brake booster as necessary, free of charge. Owner notification letters were mailed October 28, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB9.

21V486000 · Electrical System:propulsion System:traction Motor:controller:software; Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software

Jun 29, 2021

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan Turbo, Taycan Turbo S, Taycan 4S, 2021 Taycan, Taycan Cross Turismo, Taycan Turbo S Cross Turismo, Taycan 4S Cross Turismo, and Taycan Turbo Cross Turismo vehicles. The monitoring software can incorrectly detect a fault and shutdown the power train, causing a loss of motive power.

Consequence & remedy

Consequence: A loss of motive power increases the risk of a crash.

Remedy: Dealers will reprogram the power electronics and the engine control unit, free of charge. Owner notification letters were mailed July 30, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB5.

Additional source detail variants (2)

Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan Turbo, Taycan Turbo S, Taycan 4S, 2021 Taycan, Taycan Cross Turismo, Taycan Turbo S Cross Turismo, Taycan 4S Cross Turismo, and Taycan Turbo Cross Turismo vehicles. The monitoring software can incorrectly detect a fault and shutdown the power train, causing a loss of motive power.

Consequence: A loss of motive power increases the risk of a crash.

Remedy: Dealers will reprogram the power electronics and the engine control unit, free of charge. Owner notification letters were mailed July 30, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB5.

Electrical System:propulsion System:traction Motor:controller:software

Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 Taycan Turbo, Taycan Turbo S, Taycan 4S, 2021 Taycan, Taycan Cross Turismo, Taycan Turbo S Cross Turismo, Taycan 4S Cross Turismo, and Taycan Turbo Cross Turismo vehicles. The monitoring software can incorrectly detect a fault and shutdown the power train, causing a loss of motive power.

Consequence: A loss of motive power increases the risk of a crash.

Remedy: Dealers will reprogram the power electronics and the engine control unit, free of charge. Owner notification letters were mailed July 30, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB5.

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

1

PE21013 · Loss Of Motive Power

Opened May 17, 2021 · Closed Dec 23, 2021

Status: closed (inferred from source dates) · Electrical System; Electrical System:propulsion System

In May 2021, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE) of complaints received alleging a loss of motive power while in motion at any speed with no prior warning to the driver in the 2020-2021 model year (MY) Porsche Taycan electric vehicles. ODI had received 9 Vehicle Owner Questionnaires (VOQs) and several field reports. All complaints alleged that a loss of motive power occurred without warning and error messages about a battery fault displayed during or after the vehicle stalled.In the subject vehicles, a pulse-controlled inverter is mounted on each of the two drive modules on the front and rear axles. The software designed to continuously monitor end-to-end communication between the safety-related electronic control units (ECUs) in the vehicle can, in certain instances, incorrectly and sporadically detect a potentially faulty communication, set an error memory entry, and trigger a shutdown of the power train, resulting in loss of motive power. If this occurs, the affected vehicles display the warning message ?Motor control error. Stop vehicle in a safe place in the instrument cluster.Porsche has corrected the software malfunction in production. Further, Porsche is conducting a safety recall (21V-486) to upgrade the software on vehicles already in the field. In view of the recall action, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above can be reviewed online at nhtsa.gov under the following identification numbers: 11435775, 11433960, 11431568, 11429897, 11427688, 11426921, 11426902, 11424618, 11424613, 11424296, 11424175, 11424015, 11423458, 11423311, 11422549, 11422463, 11421593, 11421575, 11421494, 11421347, 11420845, 11420788, 11420734, 11420572, 11419756, 11419735, 11419730, 11419721, 11419422, 11418975, 11418935, 11418793, 11418705, 11418692, 11418593, 11418476, 11418405, 11418381, 11418245, 11418237, 11418153, 11418142, 11418132, 11418106, 11415110, 11414731, 11414486, 11404336, 11386164, 11383427, 11377898, 11377875, 11364083

Additional source detail variants (2)

Electrical System

In May 2021, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE) of complaints received alleging a loss of motive power while in motion at any speed with no prior warning to the driver in the 2020-2021 model year (MY) Porsche Taycan electric vehicles. ODI had received 9 Vehicle Owner Questionnaires (VOQs) and several field reports. All complaints alleged that a loss of motive power occurred without warning and error messages about a battery fault displayed during or after the vehicle stalled.In the subject vehicles, a pulse-controlled inverter is mounted on each of the two drive modules on the front and rear axles. The software designed to continuously monitor end-to-end communication between the safety-related electronic control units (ECUs) in the vehicle can, in certain instances, incorrectly and sporadically detect a potentially faulty communication, set an error memory entry, and trigger a shutdown of the power train, resulting in loss of motive power. If this occurs, the affected vehicles display the warning message ?Motor control error. Stop vehicle in a safe place in the instrument cluster.Porsche has corrected the software malfunction in production. Further, Porsche is conducting a safety recall (21V-486) to upgrade the software on vehicles already in the field. In view of the recall action, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above can be reviewed online at nhtsa.gov under the following identification numbers: 11435775, 11433960, 11431568, 11429897, 11427688, 11426921, 11426902, 11424618, 11424613, 11424296, 11424175, 11424015, 11423458, 11423311, 11422549, 11422463, 11421593, 11421575, 11421494, 11421347, 11420845, 11420788, 11420734, 11420572, 11419756, 11419735, 11419730, 11419721, 11419422, 11418975, 11418935, 11418793, 11418705, 11418692, 11418593, 11418476, 11418405, 11418381, 11418245, 11418237, 11418153, 11418142, 11418132, 11418106, 11415110, 11414731, 11414486, 11404336, 11386164, 11383427, 11377898, 11377875, 11364083

Electrical System:propulsion System

In May 2021, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE) of complaints received alleging a loss of motive power while in motion at any speed with no prior warning to the driver in the 2020-2021 model year (MY) Porsche Taycan electric vehicles. ODI had received 9 Vehicle Owner Questionnaires (VOQs) and several field reports. All complaints alleged that a loss of motive power occurred without warning and error messages about a battery fault displayed during or after the vehicle stalled.In the subject vehicles, a pulse-controlled inverter is mounted on each of the two drive modules on the front and rear axles. The software designed to continuously monitor end-to-end communication between the safety-related electronic control units (ECUs) in the vehicle can, in certain instances, incorrectly and sporadically detect a potentially faulty communication, set an error memory entry, and trigger a shutdown of the power train, resulting in loss of motive power. If this occurs, the affected vehicles display the warning message ?Motor control error. Stop vehicle in a safe place in the instrument cluster.Porsche has corrected the software malfunction in production. Further, Porsche is conducting a safety recall (21V-486) to upgrade the software on vehicles already in the field. In view of the recall action, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above can be reviewed online at nhtsa.gov under the following identification numbers: 11435775, 11433960, 11431568, 11429897, 11427688, 11426921, 11426902, 11424618, 11424613, 11424296, 11424175, 11424015, 11423458, 11423311, 11422549, 11422463, 11421593, 11421575, 11421494, 11421347, 11420845, 11420788, 11420734, 11420572, 11419756, 11419735, 11419730, 11419721, 11419422, 11418975, 11418935, 11418793, 11418705, 11418692, 11418593, 11418476, 11418405, 11418381, 11418245, 11418237, 11418153, 11418142, 11418132, 11418106, 11415110, 11414731, 11414486, 11404336, 11386164, 11383427, 11377898, 11377875, 11364083