NHTSA recall 21V846000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 21V846000 |
| Manufacturer's number | SB-21-00-004 |
| Manufacturer | Tesla, Inc. |
| Reported | 2021-10-29 |
| Owners notified | 2021-10-25 |
| Component | FORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA; FORWARD COLLISION AVOIDANCE:SOFTWARE; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING |
| Units potentially affected | 11728 |
| Report | Quarterly report 1, for 2021 quarter 4 |
|---|---|
| Filed with NHTSA | 2021-12-23 |
| Vehicles in the campaign | 11728 |
| Reported remedied | 11728 (100%) |
| Reported unreachable | 0 |
| Reported removed | 0 |
These are the manufacturer's totals for the whole campaign at the end of 2021 quarter 4, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
Tesla, Inc. (Tesla) is recalling certain 2017-2021 Model S, Model 3, Model X, and 2020-2021 Model Y vehicles operating software version 2021.36.5.2. A communication error may cause false forward-collision warning (FCW) or unexpected activation of the automatic emergency brake (AEB) system.
What can happen
Unexpected activation of the AEB system may cause the car to stop suddenly, increasing the risk of a crash.
The remedy
Tesla Service has released an over-the-air (OTA) software update, free of charge. The recall began October 25, 2021. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-21-00-004.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| SB-23-17-002 R1 | 2023-08-21. Service bulletin. In 2021 - 2022 Model S vehicles running software version 2022.20.9 or later, Autopilot and Active Safety Features that were using front radar sensor data transitioned to using camera data (Tesla Vision), making the front radar sensor unnecessary. |
|---|---|
| SB2233006 | 2023-04-24. Service bulletin. Some Model Y vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
| SB2233005 | 2023-04-24. Service bulletin. Some Model Y vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
| SB2233004 | 2023-04-24. Service bulletin. Some Heat Pump Model 3 vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
| SB2233003 | 2023-04-24. Service bulletin. Some Heat Pump Model 3 vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
| SB2233002 | 2023-04-24. Service bulletin. Some Model 3 vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
| SB-23-17-002 | 2023-04-10. Service bulletin. In 2021 - 2022 Model S vehicles running firmware version 2022.20.9 or later, Autopilot and Active Safety Features that were using front radar sensor data transitioned to using camera data (Tesla Vision), making the front radar sensor unnecessary. |
| SB2233006 | 2022-06-13. Service bulletin. Some Model Y vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
| SB2233005 | 2022-06-13. Service bulletin. Some Model Y vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
| SB2233004 | 2022-06-13. Service bulletin. Some Heat Pump Model 3 vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle. |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.