T-SB-0277-17

T-SB-0277-17
September 6, 2017
Clearance Warning Sonar Sensor False Detection
Service
Category
Audio/Visual/Telematics
Section
Park Assist/Monitoring
Market USA
Applicability
YEAR(S)
MODEL(S)
2014 - 2017
Tundra
ADDITIONAL INFORMATION
Introduction
Some 2014 – 2017 model year Tundra vehicles equipped with clearance warning sonar ultrasonic
sensors mounted in metal bumpers may alert that an object is detected when no objects are in
the detection area. 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.

All 2014 – 2016 model year Tundra vehicles.

2017 model year vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
PLANT
PRODUCTION CHANGE EFFECTIVE VIN
Tundra
TMMTX
5TF##5F1#HX655005
© 2017 Toyota Motor Sales, USA
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T-SB-0277-17
September 6, 2017
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Clearance Warning Sonar Sensor False Detection
Warranty Information
OP CODE
DESCRIPTION
TIME
EL1705
Install Ultrasonic Sensor Spacers (Front)
1.0
EL1706
Install Ultrasonic Sensor Spacers (Rear)
0.8
EL1705A
Install Ultrasonic Sensor Spacers
(Front and Rear)
1.8
OFP
T1
T2
89341-0C020
87
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.
Parts Information
PART NUMBER
PART NAME
QTY*
89345-0C010
Spacer, Ultrasonic Sensor
2
89348-0C011
Retainer, Ultrasonic Sensor
2
*Quantities listed are for the repair of one bumper.
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
Techstream 2.0*
Techstream Lite
PART NUMBER
QTY
TS2UNIT
ADE
Techstream Lite (Green Cable)
TSLITEPDLR01
TSLP2DLR01
* Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
Software version 12.20.024 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
© 2017 Toyota Motor Sales, USA
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Clearance Warning Sonar Sensor False Detection
Inspection Procedure
1. Does the clearance warning sonar display
indicate there is an object in a detection area
when no objects are present in the
detection areas?

YES — Continue to step 2.

NO — This bulletin does NOT apply.
Continue diagnosis using the
applicable Repair Manual.
Figure 1.
1
1
1
1
1
Detection Area and Sensor Location
2. Are the affected sensors mounted in steel portions of the bumper?

YES — Continue to step 3.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
3. Use the following table to determine the procedure(s) to be completed.
Table 1.
POSITION OF AFFECTED SENSOR
REPAIR PROCEDURE TO BE COMPLETED
Front Bumper
Repair Procedure A
Rear Bumper
Repair Procedure B
Front and Rear Bumpers
Repair Procedures A and B
© 2017 Toyota Motor Sales, USA
T-SB-0277-17
September 6, 2017
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Clearance Warning Sonar Sensor False Detection
Repair Procedure A – Install Spacers on Front Bumper Sensors
1. Remove the No. 1 ultrasonic sensors.
Refer to the Technical Information System
(TIS), applicable model and model year
Repair Manual:

Figure 2.
2
2014 / 2015 / 2016 / 2017 Tundra:
Audio/Visual/Telematics –
Park Assist/Monitoring – “Park Assist /
Monitoring: Ultrasonic Sensor(for Front
Side): Removal”
2
1
1
2. Clean any debris from the sensor assembly
groove and bumper surface.
1
No. 1 Ultrasonic Sensor
2
No. 1 Ultrasonic Sensor Retainer
Figure 3. Ultrasonic Sensor Without Spacer
1
1
Groove
2
Sensor
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Clearance Warning Sonar Sensor False Detection
Repair Procedure A – Install Spacers on Front Bumper Sensors (Continued)
3. Install a spacer in the groove on the
ultrasonic sensor.
Figure 4. Ultrasonic Sensor With Spacer Installed*
1
1
Silicon Rubber Spacer
2
Sensor
*White-colored spacer is for demonstration only.
4. Install the No. 1 ultrasonic sensors with NEW retainers.
Refer to TIS, applicable model and model year Repair Manual:

2014 / 2015 / 2016 / 2017 Tundra:
Audio/Visual/Telematics – Park Assist/Monitoring – “Park Assist / Monitoring: Ultrasonic
Sensor(for Front Side): Installation”
5. Verify the clearance warning sonar operation.
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Clearance Warning Sonar Sensor False Detection
Repair Procedure B – Install Spacers on Rear Bumper Sensors
1. Remove the No. 2 ultrasonic sensors.
Refer to TIS, applicable model and model year
Repair Manual:

Figure 5.
2
2
2014 / 2015 / 2016 / 2017 Tundra:
Audio/Visual/Telematics –
Park Assist/Monitoring – “Park Assist /
Monitoring: Ultrasonic Sensor(For Rear
Side): Removal”
1
1
1
No. 1 Ultrasonic Sensor
2
No. 1 Ultrasonic Sensor Retainer
2. Clean any debris from the sensor assembly groove and bumper surface.
3. Install a spacer in the groove on the ultrasonic sensor (refer to Figures 2 and 3).
4. Install the No. 2 ultrasonic sensors with NEW retainers.
Refer to TIS, applicable model and model year Repair Manual:

2014 / 2015 / 2016 / 2017 Tundra:
Audio/Visual/Telematics – Park Assist/Monitoring – “Park Assist / Monitoring: Ultrasonic
Sensor(For Rear Side): Installation”
5. Verify the clearance warning sonar operation.
© 2017 Toyota Motor Sales, USA