NHTSA ID Number: 10134101
Manufacturer Communication Number: T-SB-0065-16
TSB/Document Date: 2018-04-23
Summary
TSB: Some 2015 model year Sienna vehicles equipped with Dual Front Air Conditioning Systems may exhibit an intermittent buzzing noise condition coming from the center of the instrument panel during HVAC operation. The noise occurs during the operation of the left-hand (LH) and right-hand (RH) air mix servo motors. Follow the procedure in this bulletin to address this condition.
T-SB-0065-16
June 22, 2016
HVAC Servo Motor Noise
Service
Category
Vehicle Interior
Section
Heating/Air Conditioning
Market USA
Applicability
YEAR(S)
MODEL(S)
2015
Sienna
ADDITIONAL INFORMATION
Introduction
Some 2015 model year Sienna vehicles equipped with Dual Front Air Conditioning Systems may
exhibit an intermittent buzzing noise condition coming from the center of the instrument panel
during HVAC operation. The noise occurs during the operation of the left-hand (LH) and
right-hand (RH) air mix servo motors. Follow the procedure in this bulletin to address
this condition.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
Sienna
2GR-FE
2WD
5TD#K3DC#FS659090
Sienna
2GR-FE
4WD
5TD#K3DC#FC119583
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
AC1601
R & R Servo Sub-Assy, Damper
1.2
87106-07120
91
43
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.
© 2016 Toyota Motor Sales, USA
Page 1 of 13
T-SB-0065-16
June 22, 2016
Page 2 of 13
HVAC Servo Motor Noise
Parts Information
PART NUMBER
PART NAME
QTY
87106-08110
Servo Sub-Assy, Damper
1
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
Techstream 2.0*
Techstream Lite
PART NUMBER
QTY
TS2UNIT
ADE
Techstream Lite (Green Cable)
TSLITEPDLR01
1
TSLP2DLR01
* Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
Software version 11.10.034 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
Repair Procedure
1. Is buzzing noise heard from the center vents when changing modes on the HVAC
control panel?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Slide both front seats to the rearward most position.
3. Disconnect the cable from the negative battery terminal.
CAUTION
Wait at least 90 seconds after disconnecting the cable from the negative ( – ) battery terminal to
disable the SRS system.
NOTICE
After turning the ignition switch off, waiting time may be required before disconnecting the
cable from the negative ( – ) battery terminal. Therefore, make sure to read the disconnecting
the cable from the negative ( – ) battery terminal notice before proceeding.
Refer to Technical Information System (TIS), applicable model and model year Repair Manual:
2015 Sienna:
General – Introduction – “Introduction: Repair Instructions: Precaution”
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 3 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
4. Remove the front door scuff plate LH,
disengage the 12 claws and remove
the door scuff plate.
Figure 1.
5. Remove the cowl side trim sub-assembly LH.
A. Remove the clip.
Figure 2.
B. Disengage the claw and clip to remove
the cowl side trim sub-assembly LH.
6. Remove the front door opening trim weather strip LH to the extent that allows removal of the
instrument panel finish panel end.
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 4 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
7. Remove the No. 1 lower instrument panel lower finish panel.
A. Remove the two bolts.
B. Disengage the 9 clips and 3 guides to
separate the No. 1 instrument panel
lower finish panel.
Figure 3.
C. Remove the fuel lid lock and hood lock
control levers by disengaging the claws
and 2 guides.
Figure 4.
D. Disconnect the connectors to remove the No. 1 instrument panel lower finish panel.
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 5 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
8. Remove the knee airbag assembly.
CAUTION
When storing the lower No. 1 instrument panel airbag assembly, keep the airbag deployment
side facing upward.
A. Check that the ignition switch is off.
B. Check that the cable is disconnected from the negative (–) battery terminal.
C. Remove the 4 bolts.
D. Disengage the 2 claws to separate
the DLC3.
Figure 5.
NOTICE
When removing the knee air bag
assembly, do NOT pull the air bag
wire harness.
E. Remove the knee airbag assembly.
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 6 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
F. Using a thin-bladed screwdriver with its
tip wrapped with protective tape, release
the locking button.
Figure 6.
1
Locking button
2
Screwdriver wrapped with protective tape
G. Using a thin-bladed screwdriver with its tip wrapped with protective tape, disconnect the
airbag connector.
NOTICE
When disconnecting any airbag connector, take care not to damage the airbag wire harness.
9. Remove the clip and the instrument panel
finish panel end LH.
Figure 7.
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 7 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
10. Remove the No. 3 air duct sub‐assembly.
A. Remove the clip.
B. Disengage the 3 claws to remove the
No. 3 air duct sub‐assembly.
Figure 8.
11. Remove the driver side HVAC servo motor.
A. Disconnect the servo motor connector.
B. Remove the 2 servo motor screws.
Figure 9.
NOTE
Once servo motor is removed, the
gear on the HVAC case will
drop down.
1
2
1
Servo motor connector
2
Servo motor screws
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 8 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
12. Install the Driver Side HVAC Servo Motor.
A. Position the gear on the HVAC case to the initialized position.
NOTICE
The NEW servo motor is in the initialized position.
(1) Use your finger and line up the top of
the gear with the rib on the side of
the HVAC case.
Figure 10.
(2) Hold the HVAC gear in the initialized
position by gently placing bubble
wrap, foam, paper, etc. (rolled up
bubble wrap shown), between the
inside of the gear and the
HVAC case.
Figure 11.
1
Packing material (bubble wrap, foam, paper, etc.)
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 9 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
(3) Install the NEW servo motor by aligning the key feature on the servo motor gear with
the corresponding key feature on the HVAC case gear.
Figure 12.
1
Figure 13.
Align servo motor and HVAC case gear
key features
(4) Reinstall the 2 servo motor screws.
(5) Reconnect the servo motor connector.
(6) Remove the material (bubble wrap, foam, paper, etc.) used to hold the HVAC case gear
in place.
B. Reinstall all driver side trim panels in the reverse order of removal.
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 10 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
13. Disassemble the Passenger Side Trim Panel.
A. Remove the front door scuff plate RH.
(1) Disengage the 12 claws to remove
the door scuff plate assembly RH.
Figure 14.
B. Remove the cowl side trim sub-assembly RH.
(1) Remove the clip.
(2) Disengage the claw and clip to
remove the cowl side trim board RH.
Figure 15.
C. Remove the front door opening trim weather strip RH to the extent that allows removal of
the instrument panel finish panel end.
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 11 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
D. Remove the instrument side panel RH
by disengage the 5 claws and 2 guides
to remove the instrument side panel RH.
Figure 16.
E. Remove the glove compartment door sub-assembly.
(1) Remove the 2 bolts and 2 screws.
(2) Disengage the 2 claws and 3 guides
to remove the glove compartment
door sub-assembly.
14. Install the Passenger Side Insulation Sheet.
The insulation sheet has adhesive applied to
the top corners and bottom of the inside of
the sheet. The adhesive areas are used to
attach the insulation sheet in place.
Figure 17.
Figure 18.
1
2
NOTE
Adhesive side faces Servo Motor.
3
1
Insulation sheet, narrow side
2
Insulation sheet, wide side
3
Insulation sheet, bottom portion
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
Page 12 of 13
HVAC Servo Motor Noise
Repair Procedure (Continued)
15. Position the insulation sheet.
A. Place the narrow side of the insulation sheet adhesive against the center console/dash
metal brace.
B. Place the wide side of the insulation
sheet adhesive against the blower motor
case covering the servo motor and
wire harness.
Figure 19.
1
Center console/dash metal brace
2
Blower motor case
3
Top outer portion of plastic trim panel
(1) Place the bottom portion of the insulation sheet adhesive on the outside of the top
plastic tim planel.
(2) Remove the three adhesive liners
and ahere to the respecitve locations.
Figure 20.
16. Reinstall passenger side trim panels in the reverse order from removal.
17. Reconnect battery.
Torque: 5.4 N*m (55 kgf*cm, 48 in*lbf)
© 2016 Toyota Motor Sales, USA
T-SB-0065-16
June 22, 2016
HVAC Servo Motor Noise
Repair Procedure (Continued)
18. Initalize all affected systems.
Refer to TIS, applicable model and model year Repair Manual:
2015 Sienna
General – Introduction – “Introduction: Repair Instruction: Initialization”
19. Verify normal operation of HVAC temperature control.
NOTE
Vehicle should be at normal operating temperature.
© 2016 Toyota Motor Sales, USA
Page 13 of 13
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TSB/Document ID: T-SB-0065-16
Replacement Service Bulletin Number:
MFR Communication Date: 2016-06-22
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:APPLIANCE:AIR CONDITIONER
MFR Component System:
MFR Component Subsystem:
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