TOYOTA

T-SB-0147-14 November 19, 2014 Technical Service Bulletin

3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual
Seat Only

Service
Category Vehicle Interior

Toyota Supports
Section Seat Market USA aera
Applicability
YEAR(S) MODEL(S) ADDITIONAL INFORMATION
2011 - 2014 Sienna Plant Code(s): S
WMI\(s): 5TD
introduction

Some 2011 — 2014 model year Sienna vehicles may exhibit a condition where a rattle or squeak type
noise is heard from the rear of the vehicle while driving over rough road surfaces when the seats are
emply in the upright latched position. If the 3rd row seats are stowed, the noise is no longer present.
Follow the Repair Procedure in this bulletin to address this condition.

Parts Information

PART NUMBER

PREVIOUS NEW COLOR PART NAME ary

79997-08011-B1 79997-08012-B1 Dark Gray 2

79997-08011-B2 79997-08012-B2 Gray Protector, Seat Leg Box, No. 1 2

79997-08011-E1 79997-08012-E1 Ash Brown 2

71324-08010 71324-08011 a Cushion, RR Seat 2

Warranty Information

OP CODE DESCRIPTION TIME OFP Tt | 12

79997-08011-B1

79997-08011-82 | 91 | 49

79997-08011-E1
71324-08010

R & R W-Cups/Outside Bumpers and

Adjust Seat Tension ao

BD1424

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.

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3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Required Tools & Equipment

REQUIRED TOOLS QUANTITY
Locking Pliers (Vise-Grip®, or equivalent) 1

Repair Procedure
1. For 2011 model year only:

Confirm that T-SB-0157-11, “3rd Row Manual Seat Rattle Noise,” has been properly performed,
if applicable by VIN.

2. Stow both the 60% and 40% side of the 3rd row seats.

3. Replace the W-cups (Seat Leg Box Protectors) and outside bumpers (Seat Cushions).
Figure 1.

A, Remove the W-cups and outside bumpers from the vehicle by prying on them.

B. Install the NEW W-cups and outside bumpers into the vehicle and ensure they are
seated properly.

NOTE
Once the W-cups are removed, they will no longer be usable.

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3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Repair Procedure (Continued)

4, Latch the 3rd row seats in the table-top position.

5. Adjust the tension on the rear legs for the 3rd row seats on the side the noise is coming from.

A. Remove the upper garnish from the 3rd row seats.
Figure 3.

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3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Repair Procedure (Continued)

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

+ 2011 Sienna:
Vehicle Interior - Seat ~ “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

* 2012 Sienna:
Vehicle Interior — Seat — “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

* 2013 Sienna:
Vehicle Interior —- Seat — “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

+ 2014 Sienna:
Vehicle Interior — Seat — “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

B. Loosen the 10 mm rear leg bolts on each leg one full turn.
Figure 4.

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3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Repair Procedure (Continued)

C, Place locking pliers, or similar tool, on rear damper bracket.
Figure 5,

D. Push down on the locking pliers to add tension Figure 6.
to the leg bracket dampener.

While pushing down, make sure to hold even
pressure on the locking pliers and ensure they
are pushed down until you feel a stop, then
retighten the 10 mm rear leg bolts beginning

with the outer leg first.
Torque: 7 N*m (71 kgf*cm, 5 ft*Ibf)

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3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Repair Procedure (Continued)

E. If the tensioning procedure was performed correctly, a gap should be present on the
forward section of the bolt head on the inboard facing bolts that were previously loosened.
This gap condition, also known as “winking” condition, should point towards the front of

the vehicle.

NOTE
Winking condition will vary by vehicle and seat assembly. Please reference Figure 7 for
examples of correct winking condition.

Figure 7.

[1 | sapavinking Condition ] [2 [Front ot venicte
6. Remove the lower garnish from the 3rd row seats.
Refer to TIS, applicable model and model year Repair Manual:
+ 2011 Sienna:

Vehicle Interior — Seat — “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

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w) T-SB-0147-14 November 19, 2014 Page 7 of 9

3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Repair Procedure (Continued)

+ 2012 Sienna:
Vehicle Interior - Seat - “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

* 2013 Sienna:
Vehicle Interior - Seat — “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

+ 2014 Sienna:
Vehicle Interior - Seat - “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Removal”

7. Loosen up all seat mechanism bolts to allow the seat to settle.

NOTE
{t is important that NO excessive weight is placed on the seat assemblies after performing
this step,

Figure 6.

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3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Repair Procedure (Continued)

8. While consistently pushing forward on the torsion bar, tighten the bolts on the 60% side, in the
sequence shown in Figure 9, to the following specifications.

Torque: 19 N*m (193 kgf*cm, 14 ft*lbf)

Figure 9.

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3rd Row Seat Rear Leg Latch Squeak/Rattle - Manual Seat Only

Repair Procedure (Continued)

9. While consistently pushing forward on the Figure 10.
torsion bar, tighten the bolts on the 40% side, oi
in the sequence shown in Figure 10, to the
following specifications.

Torque: 19 N*m (193 kgfcm, 14 ft*lbf)

10. Reinstall the lower and upper garnish covers.
Refer to TIS, applicable model and model year Repair Manual:

+ 2011 Sienna:

Vehicle Interior — Seat - “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): installation”

+ 2012 Sienna:

Vehicle Interior - Seat - “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): installation”

* 2013 Sienna:

Vehicle interior — Seat — “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Installation”

+ 2014 Sienna:

Vehicle interior - Seat — “Seat: Rear No. 2 Seat Assembly (for Manual Seat Type
LH Side / RH Side): Installation”

11. Cycle the 3rd row seats to ensure proper operation.

© 2014 Toyota Motor Sales, USA,