a. Disconnect the electrical connector.
b. Disengage the clamp.

D

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c. Apply protective tape around the radiator grille.

d. Remove the 2 screws.
e. Remove the 2 clips.
f. Disengage the 10 guides to remove the grille.

8

5. DETERMINE IF A NEW MWRS IS REQUIRED

YES

Was there a DTC that required
MWRS replacement?

Use the original MWRS

AF
T

Replace the MWRS

No

Proceed to Step #8 Prepare
the MWRS for EPT-Sealer
application on p. 10

Proceed to Step #6 Replace
MWRS on p. 9

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. 10

.Yes.

EPT-Sealer WILL NOT be
necessary. Proceed to
Step #12 on p. 13

9

8. PREPARE THE MWRS FOR EPT-SEALER 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 MWRS
sensor and the emblem area on the back side of the grille.
9. DETERMINE GRILL TYPE

AF
T

Determine Grill Type

Tacoma Bar Type

Tacoma Mesh Type

Proceed to Step 11 Apply EPT
Sealer – Mesh Type on p.12

R

Proceed to Step 10 Apply EPT
Sealer – Bar Type on p. 10

10. APPLY EPT-SEALER – Tacoma Bar Type
Note: This application will use P/N 88278-0C010. (75mm x 150mm x 5mm)

D

This process is only for
Tacoma’s with the Bar
type grill:

Video: Not available at this time
(cont.)
10

a. Apply the EPT Sealer to the back side of the MWRS in the position shown below:
•
•

R

AF
T

•
•

Start applying the EPT Sealer sheet to the vertical surface of the radiator grill, just
above the MWRS.
It will be necessary to push the EPT Sealer into the plastic tab at the top, creating
a hole in the sealer.
Wrap the EPT Sealer around the wire harness, as shown.
Using heavy finger pressure, thoroughly press the entire surface of the EPT sealer
to securely adhere it to all contact surfaces of the MWRS and grill.

D

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

Continue to Step 12 on page 13

11

11. APPLY EPT-SEALER – Tacoma Mesh Type
Note: This application will use P/N 88278-0C010. (75mm x 150mm x 5mm)

AF
T

This process is only for
Tacoma’s with the Mesh
type grill:

Video: Tacoma Mesh Type Repair – EPT-Sealer Installation

b. Apply the EPT Sealer to the back side of the MWRS in the position shown below:
•

D

R

•

Start applying the EPT Sealer sheet to the horizontal lip of the radiator grill to
create a waterproof shield over the top of the sensor.
Using heavy finger pressure, thoroughly press the entire surface of the EPT sealer
to securely adhere it to all contact surfaces of the MWRS.

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

12

12. REINSTALL RADIATOR GRILLE
c. Engage the 10 guides to install the radiator grille.
d. Install the 2 clips.
e. Install the 2 screws.
f. Remove the protective tape.
g. Engage the clamp.
h. Connect the electrical connector.
13. DETERMINE IF MWRS ADJUSTMENT IS NECESSARY

Was the MWRS replaced with a
NEW sensor?

AF
T
YES

Proceed to Step #14 ADJUST
NEW MWRS on p. 13

No

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

14. ADJUST NEW MWRS (only if required)
i. Follow the Repair Manual procedure to complete the adjustment of the NEW MWRS.
CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT
(RM1000000018991)

D

R

Proceed to DETERMINE CALIBRATION STATUS on p. 37

13

VIII. TACOMA - REPAIR B

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T

TACOMA Repair B vehicles will have a radiator grill of this design:

D

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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.

14

.. Yes..

Does the Grade of the vehicle
match the following?
•

..No..

TRD Pro

Reference the separate Job
Aid for modified vehicles

AF
T

Proceed to Step 2 Check for
DTC’s on p. 15

2. CHECK FOR DTC’S
e. Using a Techstream, perform a Health Check.
f. 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

YES

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

Proceed to Step 4 on p. 16

D

Proceed to Step 3 on p. 16

No

15

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 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. Disconnect the electrical connector.
b. Disengage the clamp.

D

R

c. Apply protective tape to the bumper around the radiator
grille.

d. Remove the 2 screws.
e. Remove the 2 clips.
f. Disengage the 10 guides by pulling the grille forward to
disengage the remaining clips.

16

5. REMOVE MWRS FROM THE GRILLE
a. Place a blanket onto a table or workbench.
b. Place the radiator grille onto the blanket, front die down.
c. Disconnect the electrical connector.

AF
T

d. Remove the 2 bolts and screw.
e. Disengage the 2 guides and remove the MWRS from the
grill.

6. DETERMINE IF A NEW MWRS IS REQUIRED

YES

Was there a DTC that required
MWRS replacement?

R

Replace the MWRS

Use the original MWRS

Proceed to Step #8 Apply EPTSealer to MWRS p. 18

D

Proceed to Step #7 Determine if
EPT-Sealer is Necessary for
NEW Sensor on p. 18

No

17

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

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

AF
T

.NO.

EPT-Sealer will be
necessary. Proceed to
Step #8. on p. 18

.Yes.

EPT-Sealer WILL NOT be
necessary. Proceed to
Step #12 on p. 21

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.

D

R

Video: EPT Sealer Installation Repair B

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

18

9. CLEAN THE APPLICATION AREA
a. Using general purpose cleaner, remove all traces of
dust, dirt, and oils or grease from the application
area (indicated within the red circle). Be careful not
to get any liquids into the 2 vent holes.

AF
T

Note: The MWRS housing has been painted white in
these photos to provide more contrast in the pictures.
The actual MWRS housings will be black.

Left Side

10. APPLY THE EPT SEALER
a. Wear Nitrile Gloves to prevent adhesive
contamination.
b. Apply the EPT-Sealer to the left side of the MWRS
to the following standard:
• Left Side View: Corner “A” of the EPTSealer should be placed at the inner corner
of the MWRS as indicated.
• Top View: Place the EPT-Sealer on the
surface of the side vent hole (it is ok to cover
the side vent hole). DO NOT place the EPT
Sealer on top of the ridge, as indicated with
the yellow X’s.
Note: A diagram of the EPT sealer can be found on
page 14.

Top View

D

R

c. Press the EPT sealer firmly into place in this area to
seat it thoroughly. Use a flathead screw driver or
trim tool if necessary to reach the corner.

19

AF
T

d. Roll the EPT-Sealer Corner “B” onto the top edge of
the MWRS sensor as shown, aligning it’s edge
with the end of the metal bracket. Be sure to
keep the EPT-Sealer off the upper ridge.
e. Press the EPT sealer firmly into place in this area to
seat it thoroughly.

ONLY PRESS THE EPT-SEALER ONTO THE
UPPER FACE OF THE MWRS. DO NOT
press the EPT sealer into the vent hole.
It’s critical that the vent hole remains open.

D

R

f. Bend the lower flap (Corner “C”) onto the face of the
MWRS and align the edge with the edge of the
upper flap and metal bracket.
g. Press the EPT-Sealer into the face of the MWRS to
seat it firmly. DO NOT press in the area indicated
as it’s critical there is an air gap for the vent.

20

AF
T

h. Roll Corner “D” downward from the top, aligning the
edge with the edge of the lower section and metal