bracket.
i. Press the EPT sealer into place, being careful to
leave an airgap above the rear vent hole.

11. INSPECT THE EPT-SEALER APPLICATION
a. Verify that all the contact points of the EPT sealer
are thoroughly applied.
b. Verify that the bottom is still open to properly
allow airflow to the rear vent hole.

Note: In case of failure during inspection, start over
with a new piece of EPT-Sealer.

R

12. INSTALL THE MWRS
a. Engage the 2 guides of the radiator grille into the guide holes of the MWRS.
b. Install the 2 bolts and screw.
Torque: 2.5 N∙m (25 kgf∙cm, 22 in.lbs)

D

13. REINSTALL THE RADIATOR GRILLE
a. Engage the 10 guides to install the radiator grille.
b. Install the 2 clips.
c. Install the 2 screws.
d. Remove the protective tape.
e. Engage the clamp.
f. Connect the electrical connector.
14. ADJUST THE MWRS
a. Follow the Repair Manual procedure to properly adjust the MWRS.
CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT
(RM1000000018991)

Proceed to DETERMINE CALIBRATION STATUS on p. 37
21

IX. TUNDRA - REPAIR A

AF
T

TUNDRA Repair A vehicles will have a radiator grill of this design:

D

R

1. DETERMINE IF THE GRILL IS CORRECT FOR VEHICLE GRADE
a. Using the Vehicle Inquiry tab on TIS, input the vehicles VIN and determine the GRADE of
the vehicle trim.

22

Does the Grade of the vehicle
match any of the following?
•
•
•

..No..

SR
SR5
Platinum

AF
T

.. Yes..

Proceed to Step 2 Check for
DTC’s on p. 23

Reference the separate Job
Aid for modified vehicles

2. CHECK FOR DTC’S
a. Using a Techstream, perform a Health Check.
b. Are there any DTC’s relating the Pre-Collision system (i.e.
C1A10, U0235, U1104) as reported by any system?
Note: This Service Campaign covers the application of the EPTSealer and Calibration ID update for the Pre-Collision 2 System,
as detailed in these instructions. It will also cover the
replacement cost of the Millimeter Wave Radar Sensor (MWRS),
when necessary. It does not cover the diagnosis or replacement
of any other parts on the vehicle.

R

Are there DTC’s
related to the Pre-Collision System
(i.e. C1A10, U0235, U1104)?

YES

D

Proceed to Step 3 on p. 24

No

Proceed to Step 4 on p. 24

23

3. DETERMINE THE CAUSE OF PRE-COLLISION SYSTEM DTC’S (if present)
a. Use the appropriate Repair Manual procedure to determine the cause of the Pre-Collision
System DTC’s, if present.
YES

Does the Repair Manual indicate that
source of the DTC is the MWRS?

Determine the correct actions of
repair outside of this campaign

AF
T

It will be necessary to
replace the MWRS

No

Note: Because there are multiple reasons that could cause Pre-Collision system failures, it’s
critical to diagnose the system to determine the source of the trouble. This campaign will only
cover the replacement of the Millimeter Wave Radar Sensor, which is located behind the Toyota
emblem of the radiator grill. If the diagnostic process identifies that the DTC’s are caused by
something other than the Millimeter Wave Radar Sensor, this campaign will not cover the cost
associated with the repair.

4. REMOVE RADIATOR GRILL
a. Detach the 2 claws and 3 guides to remove the cover.
b. Disconnect the electrical connector under the cover.

D

R

c. Place protective tape on the front bumper and headlights,
at the edge of the grill assembly, to protect the surfaces
during removal and installation.
d. Remove the 4 screws and 2 clips

e. Detach the 4 claws and 3 clips by pulling the grill assembly
forward.

24

5. DETERMINE IF A NEW MWRS IS REQUIRED

YES

Was there a DTC that required
MWRS replacement?

No

Proceed to Step #8 PREPARE
THE MWRS FOR EPT-SEALER
APPLICATION on p. 26

AF
T

Proceed to Step #6 REPLACE
MWRS on p. 25

6. REPLACE MWRS (only if required)
a. Remove the 2 bolts and screw.
b. Remove the original MWRS.
c. Install the NEW MWRS by engaging the 2 guides of the
grille into the guide holes of the MWRS.
d. Install the 2 bolts and screw.
Torque: 2.5 N∙m (25 kgf∙cm, 22 in.lbs)

7. DETERMINE IF EPT-SEALER IS NECESSARY FOR NEW SENSOR

D

R

Does the NEW MWRS have vent
holes on the back cover?

.NO.

EPT-Sealer will be
necessary. Proceed to
Step #8. on p. 26

.Yes.

EPT-Sealer WILL NOT be
necessary. Proceed to
Step #11 on p. 27

25

8. PREPARE THE MWRS FOR EPT APPLICATION
a. Place a blanket onto the table or workbench.
b. Place the radiator grille onto the blanket, front side down.
c. Using general purpose cleaner and a clean towel, clean the back side of the MMRS sensor
and the emblem area on the back side of the grille.
9. APPLY EPT-SEALER
Note: This application will use P/N 88278-0C010. (75mm x 150mm x 5mm)

AF
T

Video: Tundra EPT Sealer Installation Type A

R

a. Apply the EPT Sealer to the back face of the MWRS in the position shown below.
b. Roll the EPT sealer onto the inside lip of the radiator grill to create a waterproof shield over
the top of the sensor.
c. Using finger pressure, thoroughly press the entire surface of the EPT sealer to securely
adhere it to all contact surfaces.

D

Recommended temperature for adhesion is 50° F and above.
Keep stock at room temperature.

10. REINSTALL THE RADIATOR GRILL
a. Attach the 4 claws and 3 clips to install the grille.
b. Install the 4 screws and 2 clips.
c. Remove the protective tape.
d. Connect the electrical connector.
e. Reinstall the cover.

26

11. DETERMINE IF MWRS ADJUSTMENT IS NECESSARY

YES

Was the MWRS replaced with a
NEW sensor?

Proceed to Section XII.
DETERMINE CALIBRATION
STATUS on p. 37

AF
T

Proceed to Step #12 ADJUST
NEW MWRS on p. 27

No

12. ADJUST NEW MWRS (only if required)
a. Follow the Repair Manual procedure to complete the adjustment of the NEW MWRS.
CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT
(RM1000000015LKF)

D

R

Proceed to DETERMINE CALIBRATION STATUS on p. 37

27

X. TUNDRA - REPAIR B

AF
T

TUNDRA Repair B vehicles will have radiator grills of these designs:

D

R

1. DETERMINE IF THE GRILL IS CORRECT FOR VEHICLE GRADE
a. Using the Vehicle Inquiry tab on TIS, input the vehicles VIN and determine the GRADE of
the vehicle trim.

28

AF
T

Which Grill Type is installed
in the vehicle?

Does TIS list the
vehicle Grade as any
of the following?

..Yes..

1794
Limited

•

R

•
•

..Yes..

..No..

D

Does TIS list the
vehicle Grade as the
following?
TRD Pro

..No..

Proceed to Step 2 on p. 30

Reference the separate Job Aid
for modified vehicles

29

2. CHECK FOR DTC’S
a. Using a Techstream, perform a Health Check.
b. Are there any DTC’s relating the Pre-Collision system (i.e.
C1A10, U0235, U1104) as reported by any system?

AF
T

Note: This Service Campaign covers the application of the EPTSealer and Calibration ID update for the Pre-Collision 2 System,
as detailed in these instructions. It will also cover the
replacement cost of the Millimeter Wave Radar Sensor (MWRS),
when necessary. It does not cover the diagnosis or replacement
of any other parts on the vehicle.

Are there DTC’s
related to the Pre-Collision System
(i.e. C1A10, U0235, U1104)?

YES

Proceed to Step 3 on p. 30

No

Proceed to Step 4 on p. 31

3. DETERMINE THE CAUSE OF PRE-COLLISION SYSTEM DTC’S (if present)
b. Use the appropriate Repair Manual procedure to determine the cause of the PreCollision System DTC’s, if present.
Does the Repair Manual indicate that
source of the DTC is the MWRS?

R

YES

Determine the correct actions of
repair outside of this campaign

D

It will be necessary to
replace the MWRS

No

Note: Because there are multiple reasons that could cause Pre-Collision system failures, it’s
critical to diagnose the system to determine the source of the trouble. This campaign will only
cover the replacement of the Millimeter Wave Radar Sensor, which is located behind the Toyota
emblem of the radiator grill. If the diagnostic process identifies that the DTC’s are caused by
something other than the Millimeter Wave Radar Sensor, this campaign will not cover the cost
associated with the repair.

30

4. REMOVE RADIATOR GRILL
a. Detach the 2 claws and 3 guides to remove the side grill.
b. Disconnect the electrical connector under the cover.

AF
T

c. Place protective tape on the front bumper and headlights,
at the edge of the grill assembly, to protect the surfaces
during removal and installation.
d. Remove the 4 screws and 2 clips

R

e. Detach the 4 claws and 3 clips by pulling the grill assembly
forward.
f. Place a blanket onto the table or workbench.
g. Place the radiator grill onto the blanket, front side down.

D

5. REMOVE MWRS FROM GRILL
a. Disconnect the electrical connector.
b. Remove the 2 bolts and 1 screw.
c. Remove the MWRS from the radiator grill.

31

6. DETERMINE IF A NEW MWRS IS REQUIRED
Was there a DTC that required
MWRS replacement?

YES

No

Use the original MWRS

Proceed to Step #7
DETERMINE IF EPT-SEALER
IS NECESSARY for NEW
Sensor on p. 32

Proceed to Step #8 APPLY
EPT-SEALER TO MWRS p. 32

AF
T

Replace the MWRS

7. DETERMINE IF EPT-SEALER IS NECESSARY FOR NEW SENSOR

.NO.

EPT-Sealer will be
necessary. Proceed to
Step #8. on p. 32

.Yes.

EPT-Sealer WILL NOT be
necessary. Proceed to
Step #12 on p. 36

D

R

Does the NEW MWRS have vent
holes on the back cover?

8. APPLY EPT-SEALER TO MWRS
Note: This application will use P/N 88278-0C020. (46mm x 32mm x 5mm)

The EPT-Sealer will be applied in a specific way, using the following points for orientation. Please
note the arrangement of corners A, B, C, D.

Video: EPT Sealer Installation Repair B

32

AF