NHTSA Complaint #11307184 — 2012 TOYOTA SIENNA

POWER TRAIN issue reported to NHTSA

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Complaint Details

ODI Number	11307184
Vehicle	2012 TOYOTA SIENNA
Component	POWER TRAIN
Date of Incident	August 1, 2019
Date Filed	February 5, 2020
Mileage	75,000 miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	NY

Consumer Description

THE BEARING FOR THE VISCOUS COUPLER HAS GONE BAD. IT WHINES LOUDLY WHEN IN MOTION, AND THE VOLUME CORRELATES WITH THE SPEED. ACCORDING TO FEEDBACK FROM ONLINE THIS ISSUE HAPPENS A LOT. TOYOTA WILL NOT CHANGE THE BEARING ($50 PLUS LABOR). THEY WILL ONLY CHANGE THE WHOLE COUPLER ($1800 PLUS LABOR) AS THEY STATE THE COUPLER IS NOT SERVICEABLE. MULTIPLE PEOPLE HAVE SERVICED THE WORKING COUPLER TO CHANGE JUST THE BEARING. TOYOTA RELEASED A SIMILAR TSB FOR THE RAV 4 WHERE THE COUPLER FAILED.

Related Complaints for the 2012 TOYOTA SIENNA

Other POWER TRAIN Complaints

#11518928 — April 25, 2023 — Rear axle coupler assembly (part number 41303-28013) making very loud noise and vibration.

#11426247 — July 24, 2021 — Vehicle began 'whirring' metal noise from underneath. Local mechanic said it was coming from rear differential. I too...

#11365250 — October 19, 2020 — MY 2012 TOYOTA SIENNA RECENTLY BEGAN MAKING A LOUD WHINING NOISE FROM THE REAR AXLE AREA. UPON INSPECTION, WE WERE IN...

#11351737 — August 28, 2020 — SERVICE TECH AT THE TOYOTA DEALER SAID MY ELECTROMAGNETIC COUPLER / VISCOUS COUPLER AND DRIVESHAFT UJOINT SEIZED. AFT...

#11326947 — June 2, 2020 — UNIT IS PRODUCING A SPEED DEPENDENT WHINE FROM THE REAR DIFFERENTIAL CONSISTENT WITH A BEARING FAILURE IN THE VISCOUS...

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