Please see T-SB-0045-23
Introduction:
Some 2019 – 2023 model year Tacoma Double Cab vehicles may exhibit a whine noise from the rear of the vehicle. This condition may occur while driving around 50 mph (80 kph) at constant speed, slight acceleration, or slight deceleration. This condition may be caused by rear differential vibration transferring through the chassis and body. Follow the Repair Procedure in this bulletin to address this condition.
Parts Information For USA and Mexico Markets
PART NUMBER PART NAME QTY
51229-04010 Damper, Frame Dynamic 2
52216-04010 Stopper, Cab Mounting Cushion 2
62555-04070 Pad, Pillar, No. 5 2
Repair Procedure:
Confirm the condition exists. Does the vehicle exhibit a whine noise from the rear of the vehicle while driving around 50 mph (80 kph) at constant speed, slight acceleration, or slight deceleration?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
2. Install the No. 5 pillar pad to the C pillar.
A. Fold down the seat and seat back for adequate space during the repair.
B. Remove the right-hand and left-hand luggage compartment side tray, rear door scuff plate, rear door weatherstrip, and the quarter trim lower panel. Refer to TIS, applicable model and model year Repair Manual:
C. Remove the rear seat outer belt assembly
D. Install the No. 5 pillar pad on the bottom of the C pillar to the right-hand and left-hand sides
E. Reinstall ALL components
F. Torque the seat belt bolts. Bolt A Torque: 12.5 N*m (127 kgf*cm, 9 ft*lbf) Bolt B Torque: 42 N*m (428 kgf*cm, 31 ft*lbf)
3. Install the frame dynamic damper.
A. Remove the No. 3 cab mount nut (17 mm) and left-hand and right-hand cab mounting cushion stopper.
B. Install the NEW cab mounting cushion stopper and the NEW frame dynamic damper to the right-hand and left-hand cab mount.
C. Retighten the cab mount nut. Torque: 45 N*m (459 kgf*cm, 33 ft*lbf)
4. Test-drive the vehicle to confirm the condition is addressed
Introduction:
Some 2019 – 2023 model year Tacoma Double Cab vehicles may exhibit a whine noise from the rear of the vehicle. This condition may occur while driving around 50 mph (80 kph) at constant speed, slight acceleration, or slight deceleration. This condition may be caused by rear differential vibration transferring through the chassis and body. Follow the Repair Procedure in this bulletin to address this condition.
Parts Information For USA and Mexico Markets
PART NUMBER PART NAME QTY
51229-04010 Damper, Frame Dynamic 2
52216-04010 Stopper, Cab Mounting Cushion 2
62555-04070 Pad, Pillar, No. 5 2
Repair Procedure:
Confirm the condition exists. Does the vehicle exhibit a whine noise from the rear of the vehicle while driving around 50 mph (80 kph) at constant speed, slight acceleration, or slight deceleration?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
2. Install the No. 5 pillar pad to the C pillar.
A. Fold down the seat and seat back for adequate space during the repair.
B. Remove the right-hand and left-hand luggage compartment side tray, rear door scuff plate, rear door weatherstrip, and the quarter trim lower panel. Refer to TIS, applicable model and model year Repair Manual:
C. Remove the rear seat outer belt assembly
D. Install the No. 5 pillar pad on the bottom of the C pillar to the right-hand and left-hand sides
E. Reinstall ALL components
F. Torque the seat belt bolts. Bolt A Torque: 12.5 N*m (127 kgf*cm, 9 ft*lbf) Bolt B Torque: 42 N*m (428 kgf*cm, 31 ft*lbf)
3. Install the frame dynamic damper.
A. Remove the No. 3 cab mount nut (17 mm) and left-hand and right-hand cab mounting cushion stopper.
B. Install the NEW cab mounting cushion stopper and the NEW frame dynamic damper to the right-hand and left-hand cab mount.
C. Retighten the cab mount nut. Torque: 45 N*m (459 kgf*cm, 33 ft*lbf)
4. Test-drive the vehicle to confirm the condition is addressed