T-SB-0045-23

T-SB-0045-23
July 21, 2023
Whine Noise from Rear of Vehicle
Service
Category
Drivetrain
Market USA and
Section
Mexico
Axle/Differential
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2019 - 2023
Tacoma
Body Type(s): Double Cab
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.
© 2023 Toyota Motor Sales, USA
Page 1 of 7
T-SB-0045-23
July 21, 2023
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Whine Noise from Rear of Vehicle
Table of Contents


Warranty ................................................................................................................................ 3

For USA Market ............................................................................................................... 3

For Mexico Market ........................................................................................................... 3
Parts Information.................................................................................................................... 3


For USA and Mexico Markets........................................................................................... 3
Repair Procedure ................................................................................................................... 4
© 2023 Toyota Motor Sales, USA
T-SB-0045-23
July 21, 2023
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Whine Noise from Rear of Vehicle
Warranty Information
For USA Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
BD2302
Install Pad and Dynamic Damper
1.0
51229-04010
91
99
APPLICABLE WARRANTY
 This repair is covered under the Toyota Basic Warranty. This warranty is in effect
for 36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.
 Warranty application is limited to occurrence of the specified condition described in
this bulletin.
For Mexico Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
BD2302
Install Pad and Dynamic Damper
1.0
51229-04010
91
99
APPLICABLE WARRANTY
 This repair is covered under the Toyota Basic Warranty. This warranty is in effect
for 36 months or 60,000 kilometers, whichever occurs first, from the vehicle’s
in-service date.
 Warranty application is limited to occurrence of the specified condition described in
this bulletin.
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
© 2023 Toyota Motor Sales, USA
T-SB-0045-23
July 21, 2023
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Whine Noise from Rear of Vehicle
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.
Figure 1.
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:

2019 / 2020 – 2023 Tacoma:
Vehicle Interior – Interior Panels/Trim
– “Interior: Roof Headlining (for
Double Cab): Removal”
C. Remove the rear seat outer
belt assembly.
Refer to TIS, applicable model and
model year Repair Manual:
 2019 – 2023 Tacoma:
Vehicle Interior – Seat Belt – “Seat
Belt: Rear Seat Outer Belt Assembly
(for Double Cab): Removal”
© 2023 Toyota Motor Sales, USA
T-SB-0045-23
July 21, 2023
Whine Noise from Rear of Vehicle
Repair Procedure (continued)
D. Install the No. 5 pillar pad on the bottom of the C pillar to the right-hand and
left-hand sides.
NOTE
Hold the belt with tape to prevent the belt from retracting.
Figure 2. Installation Area
Figure 3. No. 5 Pillar Pad Installed
E. Reinstall ALL components.
Refer to TIS, applicable model and model year Repair Manual:


2019 / 2020 – 2023 Tacoma:
Vehicle Interior – Interior Panels/Trim – “Interior Roof Headlining
(for Double Cab): Installation”
2019 – 2023 Tacoma:
Vehicle Interior – Seat Belt – “Seat Belt: Rear Seat Outer Belt Assembly
(for Double Cab): Installation”
© 2023 Toyota Motor Sales, USA
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T-SB-0045-23
July 21, 2023
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Whine Noise from Rear of Vehicle
Repair Procedure (continued)
Figure 4.
F. Torque the seat belt bolts.
Bolt A
1
Torque: 12.5 N*m (127 kgf*cm, 9 ft*lbf)
Bolt B
Torque: 42 N*m (428 kgf*cm, 31 ft*lbf)
2
1
Bolt A
2
Bolt B
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.
Figure 5.
Figure 6.
1
2
1
1
No. 3 Cab Mount
1
No. 3 Cab Mount Nut
2
Cab Mounting Cushion Stopper
© 2023 Toyota Motor Sales, USA
T-SB-0045-23
July 21, 2023
Page 7 of 7
Whine Noise from Rear of Vehicle
Repair Procedure (continued)
B. Install the NEW cab mounting cushion
stopper and the NEW frame dynamic
damper to the right-hand and left-hand
cab mount.
Figure 7.
1
2
C. Retighten the cab mount nut.
Torque: 45 N*m (459 kgf*cm, 33 ft*lbf)
3
4
5
1
Body Mounting Bolt
2
No. 3 Cushion Sub-assy Cab Mounting
3
Cab Mounting Cushion Stopper
4
Frame Dynamic Damper
5
Lock Nut
4. Test-drive the vehicle to confirm the condition is addressed.
© 2023 Toyota Motor Sales, USA