Drivetrain - Driveline Vibration Between 15 - 25 MPH

T-SB-0249-12

December 21, 2012

Driveline Vibration Between 15 - 25 MPH

Service Category
Drivetrain

Section
Drive Shaft/Propeller Shaft

Market
USA





Applicability

Introduction

Some vehicles may exhibit a vibration felt in the seat floorboard and/or steering wheel around 15 - 25 mph caused by a second order driveline vibration. Use the following procedure to address this condition.





Warranty Information





Parts Information

Repair Procedure





1. Test drive the vehicle and confirm if a vibration is felt between 15 - 25 mph while accelerating decelerating or while maintaining vehicle speed.

Does vibration occur between 15 - 25 mph?

^ YES - This bulletin does apply. Go to step 2.

^ NO - This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual as necessary.

2. Replace the Rear Engine Insulator (Rear Transmission Mount).








Refer to the Technical Information System (TIS) applicable model and model year Repair Manual:

3. Test drive the vehicle after rear engine mount installation and confirm if a vibration is felt between 15 - 25 mph while accelerating, decelerating, or while maintaining vehicle speed. Is a vibration still felt between 15 - 25 mph?

YES - Go to step 4.

NO - Repair is complete.

4. Replace the rear leaf springs.





Refer to TIS applicable model and model year Repair Manual:

5. Test drive the vehicle after rear leaf spring replacement and confirm if a vibration is felt between

15 - 25 mph while accelerating, deceleration, or while maintaining vehicle speed. Is a vibration still felt between 15 - 25 mph?

^ YES - Go to step 6.

^ NO - Repair is complete.

6. Install the steering wheel damper.

A. Remove the steering wheel pad.

NOTICE

Wait at LEAST 90 seconds after the ignition switch is turned to the LOCK position and the negative (-) terminal cable is disconnected from the battery before performing this procedure.








Refer to TIS applicable model and model year Repair Manual:

B. Remove the steering wheel switch wire harness retainer bracket (only for vehicles with steering wheel mounted switches).





Is the steering wheel switch wire harness retainer bracket present? (See Figure 3.)

^ YES - Proceed with removal of the bracket. NO - Proceed to step C.





C. Install the steering wheel damper with 2 new screws in the location shown in Figure 4.

D. Install the steering wheel pad.





Refer to TIS applicable model and model year Repair Manual:

7. Test drive and confirm the repair.

© 2012 Toyota Motor Sales, USA