Service bulletins for the 2021 Toyota PRIUS
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
140 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Brakes are shown. Show all
| 21TC06-RL_Publis | 2022-01-18. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, HYDRAULIC. RL: One of the Pre-Collision System (PCS) features in your vehicle is called ?pre-collision brake assist.? When you apply some pressure to the brake pedal, this feature of the system can automatically help further reduce speed if sensors detect the possibility of a crash. Due to incorrect software programming, there could be a delay in the activation of pre-collision brake assist, resulting in less overall vehicle speed reduction. However, the other features of PCS (the pre-collision warning and pre-collision braking) are not affected by this programming error. |
|---|---|
| 21TC06-RL publi | 2021-10-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, HYDRAULIC. RL: One of the Pre-Collision System (PCS) features in your vehicle is called ?pre-collision brake assist.? When you apply some pressure to the brake pedal, this feature of the system can automatically help further reduce speed if sensors detect the possibility of a crash. Due to incorrect software programming, there could be a delay in the activation of pre-collision brake assist, resulting in less overall vehicle speed reduction. However, the other features of PCS (the pre-collision warning and pre-collision braking) are not affected by this programming error. |
| 21TC06 - Dealer | 2021-10-25. Service bulletin. SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM:SOFTWARE. DP: One of the Pre-Collision System (PCS) features in your vehicle is called ?pre-collision brake assist.? When you apply some pressure to the brake pedal, this feature of the system can automatically help further reduce speed if sensors detect the possibility of a crash. Due to incorrect software programming, there could be a delay in the activation of pre-collision brake assist, resulting in less overall vehicle speed reduction. However, the other features of PCS (the pre-collision warning and pre-collision braking) are not affected by this programming error. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.