NHTSA Complaint #11495908 — 2021 TOYOTA redundant SIENNA

SERVICE BRAKES issue reported to NHTSA

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Complaint Details

ODI Number	11495908
Vehicle	2021 TOYOTA redundant SIENNA
Component	SERVICE BRAKES
Date of Incident	December 3, 2022
Date Filed	December 3, 2022
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	TX

Consumer Description

The vehicle gets a jolt of power or speed while braking slowly or coming to a stop. This could result into an accident. This was addressed to multiple Toyota dealers and the problem was unidentified or undetectable to the technician multiple times. The problem is reported by several Sienna forum users but it is not being fixed by Toyota dealers.

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#11667043 — June 15, 2025 — Occasionally the brakes seem to stop working briefly, and the van even accelerates while the brakes are engaged. It h...

#11663483 — May 28, 2025 — When braking, the brakes will unexpectedly slip. There is generally a loss of brake and a split-second surge that is ...

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