IMPORTANT UPDATE

TECHNICAL INSTRUCTIONS
FOR
SPECIAL SERVICE CAMPAIGN K0B
MILLIMETER WAVE RADAR SENSOR

CERTAIN:
2018 – 2019 TACOMA
2018 – 2019 TUNDRA
Update 4/2/2019: Instructions provided for Tacoma Bar Type grill EPT Sealer application.
Correction made to the Tundra TRD Pro grill photo.
Update 5/2/2019: Instructions updated to confirm proper grill type for vehicle Grade and to
identify modified vehicles

The repair quality of covered vehicles is extremely important to Toyota. All dealership technicians
performing this recall are required to successfully complete the most current version of the ELearning course “Safety Recall and Service Campaign Essentials”. To ensure that all vehicles have
the repair performed correctly; technicians performing this recall repair are required to currently hold
at least one of the following certification levels:

• Certified Technician (any specialty)
• Expert Technician (any specialty)
• Master Technician
• Master Diagnostic Technician
It is the dealership’s responsibility to select technicians with the above certification level or
greater to perform this recall repair. Carefully review your resources, the technician skill level,
and ability before assigning technicians to this repair. It is important to consider technician
days off and vacation schedules to ensure there are properly trained technicians available to
perform this repair at all times.

I.

OPERATION FLOW CHART
Verify Vehicle Eligibility
1. Confirm vehicle VIN matches the RO.
2. Check Vehicle Inquiry System for
eligibility.

..Not Covered..

No further action required

..Yes..

Inform the customer that the vehicle needs
to be returned to it s original condition
before this Safety Recall can be completed.

..Yes..

Reference the separate Job Aid for
Modified vehicles

Covered

Does the vehicle have a non-OE grille,
front bumper or grille guard?
No

Does the vehicle have a suspension
lift or oversized tires?
No
Identify repair type by radiator
grille design

Does the vehicle have the correct
grille for the trim level?

..Repair B..

No

Repair A
Does the vehicle have the correct
grille for the trim level?

Yes

Reference the separate Job Aid for
Modified vehicles

..No..

Yes
Is replacement of the MWRS required
as a result of the DTC diagnosis?

Is replacement of the MWRS required
as a result of DTC diagnosis?

Yes

Yes
Replace the MWRS
Replace MWRS sensor

No

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

Does the NEW MWRS have breather
holes on the back cover?
Yes

No

No

No
Yes

Apply large sheet of EPT-Sealer
to the grill and NEW MWRS

Apply large sheet of EPT-Sealer
to the grill and original MWRS

Apply the small pad of EPT-Sealer
to the MWRS

Perform adjustment of MMWR

Perform adjustment of MWRS
Perform Health Check and identify
if a Calibration update is available for
the Pre-Collision 2 System

Update Available
..No update available..

Update the Pre-Collision 2
System Calibration ID
MWRS = Millimeter Wave Radar Sensor
EPT-Sealer = A foam pad used to seal
against water and dirt

Perform Verification Health Check

Campaign completed, return
the vehicle to the customer

2

II. IDENTIFICATION OF AFFECTED VEHICLES
1. CHECK VEHICLE FOR CAMPAIGN ELIGIBILITY
a. Compare the vehicles VIN to the VIN listed on the Repair Order to ensure they match.
b. Check the TIS Vehicle Inquiry System to confirm the VIN is involved in this Campaign, and
that it has not already been completed.
Note: TMNA warranty will not reimburse dealers for repairs completed on vehicles that are not
affected or were previously completed, even by another dealer.

III. PREPARATION
A.

PARTS

Repair A:
Part Number

Part Description

Quantity

88278-0C010

Cushion, Skid control Computer
(EPT Sealer Repair A: 75 mm x 150 mm, t = 5 mm)

1

Part Description

Quantity

Repair B:
Part Number

88278-0C020

Cushion, Skid control Computer
(EPT Sealer Repair B: 46 mm x 32 mm, t = 3 mm)

1

Part Detail:

Repair B:

Recommended temperature for adhesion is 50° F and above.
Keep stock at room temperature.
3

B.

TOOLS & EQUIPMENT
•
•

C.

•
•

Techstream
GR8 Battery Station

•

Standard Hand Tools
Nitrile Gloves

Torque Wrench

MATERIALS
•

General Purpose Cleaner

IV. BACKGROUND
The involved vehicles are equipped with a Pre-Collision System (PCS) that may automatically
apply the brakes if the system detects a potential collision. Due to the mounting of one of the
system’s sensors, it is possible for water to enter the sensor. This can lead to PCS deactivation
or inadvertent brake activation resulting in limited deceleration for a short duration of time.

V. INSPECT FOR VEHICLE MODIFICATIONS
Does the vehicle have any of the following
modifications?
• Aftermarket (non-OE) Grille
• Front bumper or Grille Guard that
could interfere with the view of the
MWRS
No
Does the vehicle have any of the following
modifications?
• Suspension lift kit
• Oversized tires
• Toyota grill from a different trim level
No

..Yes..

Inform the customer that the
vehicle will need to be returned
to it s original condition before
Safety Recall K0B can be
completed.

..Yes..

Reference the separate Job
Aid for Modified Vehicles

Continue to next section Identify MWRS Repair
Method on p.5

4

VI. IDENTIFY MWRS REPAIR METHOD (A or B)
1. DETERMINE THE REPAIR METHOD FOR THIS VEHICLE
a. Use the following chart, reference the trim level of each vehicle to determine which repair
method to use.

Determine Repair Method by
Radiator grill type

Tacoma

Tundra

OR

OR

Tacoma
Repair A

Tacoma
Repair B

Tundra
Repair A

Tundra
Repair B

Proceed to Section
VII. on p. 6

Proceed to Section
VIII. on p. 14

Proceed to Section
IX. on p. 22

Proceed to Section
X. on p. 28

5

VII. TACOMA - REPAIR A
TACOMA - Repair A vehicles will have radiator grills of these designs:

Bar Type

Mesh Type

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.

(cont.)

6

Is the Grade of this vehicle
any of the following?
.. Yes..

•
•
•
•
•
•

SR
SR5
Limited
Sport
TRD OFF (Road)
TRD Sport

Proceed to Step 2 Check for
DTC s on p. 7

..No..

Reference the separate Job
Aid for modified vehicles

2. CHECK FOR DTC’S
c. Using a Techstream, perform a Health Check.
d. 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.

YES

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

Proceed to Step 3 on p. 8.

No

Proceed to Step 4 on p. 8.

7

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?

It will be necessary to
replace the MWRS

No

Determine the correct actions of
repair outside of this campaign

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.

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?

No

Replace the MWRS

Use the original MWRS

Proceed to Step #6 Replace
MWRS on p. 9

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

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

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

Determine Grill Type

Tacoma Bar Type

Tacoma Mesh Type

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

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

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

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.

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

Continue to Step 12 on page 13

11