IMPORTANT UPDATE

JOB AID
FOR
SPECIAL SERVICE CAMPAIGN K0B
MILLIMETER WAVE RADAR SENSOR

CERTAIN:
2018 – 2019 TACOMA
2018 – 2019 TUNDRA

..VEHICLES

WITH MODIFICATIONS....

Update 5/29/2019: Modified Vehicle Labels are now available (p. 40)

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.

No further action required

..Not Covered..

Covered

Does the vehicle have modification that
changes the height of the MWRS?

Refer to the separate TI for
Factory Condition (non-modified)
vehicles

..No..

Yes

Confirm that the Owner Acknowledgment
Form has been signed by the customer
Perform Health Check. Are there DTC s
related to the Pre-Collision System
(i.e. C1A10, U0235, U1104, etc.)?

Follow the diagnostic procedure in the Repair
Manual for these DTC s to determine if
replacement of MWRS is needed.

..Yes..

No

Identify repair type by
radiator grille design

Remove the MWRS from the
radiator grille

..Repair B..

Repair A

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

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

Yes
Yes

No

Replace the MWRS

Replace MWRS sensor

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

Perform adjustment of MWRS

Update Available
Update the Pre-Collision 2
System Calibration ID

MWRS = Millimeter Wave Radar Sensor
(located in the radiator grill)
EPT-Sealer = A foam pad that is used to
seal against water and dirt

Apply the small pad of EPT-Sealer
to the MWRS

Install the MWRS into the
radiator grille

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

Perform adjustment of MMWR

Update Not Available
Update Customizable Settings

Turn PCS off
Fill out and the Owners Manual
Insert and place in O/M.

Campaign completed, return
the vehicle to the customer

Apply the yellow modification
label to the steering column

2

II. PREPARATION
A.

PARTS

Repair A:
Part Number

88278-0C010
214182323

Part Description

Quantity

Cushion, Skid control Computer
(EPT Sealer Repair A: 75 mm x 150 mm, t = 5 mm)
K0B Modified Vehicle Label*

1
1

Repair B:
Part Number

88278-0C020
214182323

Part Description

Quantity

Cushion, Skid control Computer
(EPT Sealer Repair B: 46 mm x 32 mm, t = 3 mm)
K0B Modified Vehicle Label*

1
1

*Note: K0B Modified Vehicle Labels are available through the Material Distribution Center. There are 10 labels on
each sheet. Minimum order quantity is 1 sheet. Each dealership has been sent 1 sheet, addressed to the
Service Manager. See page 40 for installation details.

Part Detail:

Repair B:

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

TOOLS & EQUIPMENT
•
•

C.

Techstream
GR8 Battery Station

•
•

Standard Hand Tools
Nitrile Gloves

•

Torque Wrench

MATERIALS
•

General Purpose Cleaner

3

III. 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.

IV. VERIFY VEHICLE ELIGIBILITY
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.

4

V. CHECK FOR VEHICLE MODIFICATIONS
1. CHECK VEHICLE FOR MODIFICATIONS
a. Inspect the vehicle to determine if modifications have been made that changed the height of
the MWRS in relation to the ground (i.e., the measurement from the ground to the MWRS).
The following are examples that will change the position of the MWRS:
• TRD grille installed in a non-TRD truck.
• Tires and/or wheel assemblies that are larger diameter than the OE fitment.
• Suspension modifications (lift kit).

..YES..

Does the vehicle have modifications that
changed the height of the MWRS?

Continue to Section VI. OWNER
ACKNOWLEDGMENT FORM on
p.5

..No..

Refer to the separate TI for Factory
Condition (non-modified) vehicles

VI. OWNER ACKNOWLEDGMENT FORM
1. VERIFY SIGNATURE ON OWNER ACKNOWLEDGMENT FORM
The owner of the vehicle is required to sign an acknowledgment form before any can proceed
on their vehicle. This form will explain to the customer that PCS and DRCC may not operate as
designed once these updates are performed on their vehicle.
a. Confirm with the Service Manager, Assistant Service Manager, Service Writer, etc. that the
required Owner Acknowledgment Form as been signed before proceeding.

If the vehicle has been modified, ensure the “Owner
Acknowledgment Form” has been completed and signed by
the customer before proceeding with this repair.

5

VII. CHECK FOR PRE-COLLISION SYSTEM DTC’S
1. 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.

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

YES

Proceed to Section VIII.
Diagnosis of Pre-Collision
System DTC s on p. 6
VIII.

No

Proceed to Section IX. Identify
MWRS Repair Method on p. 7

DIAGNOSIS OF PRE-COLLISION SYSTEM DTC’S

1. DETERMINE THE CAUSE OF PRE-COLLISION SYSTEM DTC’S
a. Use the appropriate Repair Manual procedure to determine the cause of the Pre-Collision
System DTC’s.

YES

Does the Repair Manual indicate that
replacement of the MWRS is necessary?

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 grille. 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.

Continue to IDENTIFY MWRS REPAIR METHOD on page 7
6

IX. 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
X. on p. 8

Proceed to Section
XI. on p. 15

Proceed to Section
XII. on p. 22

Proceed to Section
XIII. on p. 26

7

X. TACOMA - REPAIR A
TACOMA - Repair A vehicles will have radiator grilles of these designs:

Bar Type

Mesh Type

1. REMOVE RADIATOR GRILLE
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

2. 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 #3 Replace
MWRS

Proceed to Step #5 Prepare
the MWRS for EPT-Sealer
application on p. 10

3. 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)

4. 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 #5. on p. 10

.Yes.

EPT-Sealer WILL NOT be
necessary. Proceed to
Step #9 on p. 13

9

5. 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.