T-SB-0237-17

T-SB-0237-17
July 13, 2017
Cowl Ice Accumulation
Service
Category
Vehicle Exterior
Section
Exterior Panels/Trim
Market USA
Applicability
YEAR(S)
MODEL(S)
2016 - 2017
Tacoma
ADDITIONAL INFORMATION
Introduction
Some 2016 – 2017 model year Tacoma vehicles, after being parked for an extended period of
time in inclement winter weather, may exhibit an intermittent or abnormal windshield wiper
operation when initially turned on due to snow or sleet accumulation under the cowl louver.
Follow the Repair 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.
PLANT
ENGINE
DRIVETRAIN
D-Cab Short Box
2WD
V6
TMMTX
4cyl
4WD
SR5, TRD
5TFAZ5CN#GX023780
Limited
5TFEZ5CN#GX023777
5TFBZ5DN#GX002010
SR5, TRD
D-Cab Long Box
D-Cab Short Box
2WD
PRODUCTION CHANGE
EFFECTIVE VIN
D-Cab Long Box
Access Cab
4WD
TRIM
BODY
5TFSZ5AN#GX054183
5TFDZ5BN#GX015217
Limited
5TFGZ5AN#GX054212
SR, SR5, TRD
5TFCZ5AN#GX054184
Access Cab
D-Cab Short Box
5TFRZ5CN#GX023775
5TFRX5GN#GX076695
SR, SR5
Access Cab
© 2017 Toyota Motor Sales, USA
5TFAX5GN#GX076699
5TFSX5EN#GX048226
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Cowl Ice Accumulation
Production Change Information (Continued)
PLANT
ENGINE
DRIVETRAIN
2WD
TMMBC
D-Cab Short Box
D-Cab Long Box
V6
4WD
TRIM
PRODUCTION CHANGE
EFFECTIVE VIN
SR5, TRD
3TMAZ5CN#HM029527
Limited
3TMEZ5CN#HM029522
SR5, TRD
3TMBZ5DN#HM006571
SR, SR5, TRD
3TMCZ5AN#HM052401
Limited
3TMGZ5AN#HM052414
SR5, TRD
3TMDZ5BN#HM015133
BODY
D-Cab Short Box
D-Cab Long Box
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
BD1634
R & R Cowl Louver Vent
0.5
55708-04070
64
02
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.
Parts Information
PART NUMBER
PREVIOUS
NEW
55708-04070
55708-04071
PART NAME
QTY
Louver Sub-assy, Cowl Top Ventilator
1
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Plastic Pry Tool Kit*
00002-06020-01
1
* Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
© 2017 Toyota Motor Sales, USA
T-SB-0237-17
July 13, 2017
Cowl Ice Accumulation
Repair Procedure
Disassembly
1. Confirm excess snow or sleet accumulation under the cowl louver panel.
Is there excess snow or sleet accumulation under the cowl louver panel?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Remove the LH front wiper arm head cap by
disengaging the three claws.
Figure 1.
Claw
3. Remove the nut, windshield wiper arm, and
LH blade assembly.
Figure 2.
© 2017 Toyota Motor Sales, USA
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Cowl Ice Accumulation
Repair Procedure (Continued)
Disassembly (Continued)
4. Remove the RH front wiper arm head cap.
HINT
Use the same procedure for the LH side.
5. Remove the RH windshield wiper arm and blade assembly.
HINT
Use the same procedure for the LH side.
6. Remove the LH front fender upper protector.
Figure 3.
A. Remove the clip.
B. Disengage the three clips to remove the
front LH fender upper protector.
Clip
7. Remove the RH front fender upper protector.
HINT
Use the same procedure for the LH side.
© 2017 Toyota Motor Sales, USA
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Cowl Ice Accumulation
Repair Procedure (Continued)
Disassembly (Continued)
8. Remove the Cowl Top Ventilator Louver
Sub-assembly.
Figure 4.
A. Disengage the six claws and guide.
Claw
Guide
B. Disengage the nine guides to remove
and discard the OLD Cowl Top
Ventilator Louver Sub-assembly.
Figure 5.
Guide
© 2017 Toyota Motor Sales, USA
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Cowl Ice Accumulation
Repair Procedure (Continued)
Reassembly
1. Install the NEW Cowl Top Ventilator Louver
Sub-assembly.
Figure 6.
A. Engage the nine guides to install the
Cowl Top Ventilator Louver
Sub-assembly.
Guide
B. Engage the guide and six claws.
Figure 7.
Claw
Guide
2. Install the LH front fender upper protector.
Figure 8.
A. Engage the three clips to install the LH
front fender upper protector.
B. Install the clip.
Clip
© 2017 Toyota Motor Sales, USA
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Cowl Ice Accumulation
Repair Procedure (Continued)
Reassembly (Continued)
3. Install the RH front fender upper protector.
HINT
Use the same procedure for the LH side.
4. Install the windshield wiper arm and
blade assemblies.
A. When reusing the windshield wiper
arm and blade assembly:
Figure 9.
(1) Clean the wiper arm serrations to
remove ANY burrs, dirt, etc.
1
NOTICE
Do NOT grind down the wiper
arm serrations.
(2) Clean the wiper pivot serrations
with a wire brush.
NOTICE
3
Do NOT grind down the wiper
pivot serrations.
2
(3) Operate the front wiper motor and
then stop the front wiper motor in
the automatic stop (Park) position.
1
Wiper Arm Serration
2
Wiper Pivot Serration
3
Wire Brush
© 2017 Toyota Motor Sales, USA
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Cowl Ice Accumulation
Repair Procedure (Continued)
Reassembly (Continued)
B. Install the windshield wiper arm and
LH blade assembly to the matchmark
position with the nut as shown.
Figure 10.
Torque: 22 N*m (224 kgf*cm, 16 ft*lbf)
HINT
1
Hold the windshield wiper arm and
LH blade assembly by hand while
tightening the nut.
1
C. Install the windshield wiper arm and RH
blade assembly to the matchmark
position with the nut as shown.
Matchmark
Figure 11.
Torque: 22 N*m (224 kgf*cm, 16 ft*lbf)
1
HINT
Hold the windshield wiper arm and
RH blade assembly by hand while
tightening the nut.
1
Matchmark
D. Operate the front wipers while spraying washer fluid on the windshield glass. Make sure
that the front wipers function properly and there is no interference with the vehicle body.
E. Check the automatic stop (Park) position after lifting the wiper blades two times.
5. Engage the three claws to install the LH front wiper arm head cap.
HINT
Use the same procedure for the RH side.
© 2017 Toyota Motor Sales, USA