TECHNICAL INSTRUCTIONS
FOR
LIMITED SERVICE CAMPAIGN 23LD03
DCM REPLACEMENT
CERTAIN 2023 Model Year RX350
CERTAIN 2023 Model Year RX350H
CERTAIN 2023 Model Year RX500H

The repair quality of covered vehicles is extremely important to Lexus. All dealership technicians
performing this recall are required to successfully complete the most current version of the E-Learning
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 complete the following
course:
•

LIC206A – Electrical Repair 1

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

The flow chart is for reference only. DO NOT use it in place of the full technical instructions. Follow ALL
steps as outlined in the full technical instructions to confirm the campaign is completed correctly.
Verify Vehicle Eligibility
1. Confirm vehicle VIN matches the RO.
2. Check for Campaign eligibility using TIS.

Not
Covered

No further action required.

Covered

Replace the DCM (Telematics, Transceiver)
with a NEW one.

Perform the DCM Activation

Campaign complete.
Return the vehicle to the customer.

II. IDENTIFICATION OF AFFECTED VEHICLES
1.

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

a)
b)

III. PREPARATION
A. TOOLS & EQUIPMENT
• Standard Hand Tools
• Molding Removal
• Protective Gloves
• Protective Tape
• Techstream ADVi / Techstream 2.0 / Techstream Lite

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IV. BACKGROUND

The subject vehicles are equipped with a Data Communication Module (DCM) which supports the use of connected service utilities such as
Roadside Assistance, Automatic Collision Notification, and Emergency Assistance (SOS). These connected services are available as a free trial
subscription when the vehicle is purchased. Due to a supplier shipping error, there is a possibility that incorrect, not activated DCMs were installed
in the subject vehicles, which causes connected services to be unavailable.

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V. COMPONENTS

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VI. REMOVE DCM (TELEMATICS TRANSCIEVER)
1.

a)

CHECK FOR DTC’S
Using a Techstream, perform a Health Check to check for any
Diagnostic Trouble Codes

NOTICE:
This campaign only covers the replacement of the DCM (Telematics,
Transceiver) and associated parts. It does not cover the diagnosis or
replacement of any other parts on the vehicle.

2.

REMOVE DCM (TELEMATICS TRANSCEIVER)
CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL; 2023 MY RX350 RX350H RX500H
[10/2022 ]

VII. INSTALL NEW DCM (TELEMATICS TRANSCEIVER)
1.

VIII.
1.

2.

a)

INSTALL DCM (TELEMATICS TRANSCEIVER)
CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): INSTALLATION; 2023 MY RX350 RX350H
RX500H [10/2022 ]

ACTIVATE NEW DCM (TELEMATICS TRANSCEIVER)

DCM ACTIVATION
CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DCM ACTIVATION; 2023 MY RX350 RX350H RX500H
[10/2022 ]
PERFORM REGISTRATION
Complete steps 9 and 10 of DCM Registration

Gasoline Model: THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START

(for Start Function, Gasoline Model): REGISTRATION; 2023 MY RX350 [10/2022 -

Except Gasoline Model

]

Except Gasoline Model: THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON

START (for Start Function, except Gasoline Model): REGISTRATION; 2023 MY RX350H RX500H [10/2022 -

3.

a)

]

CHECK FOR DTC’S
Using a Techstream, perform a Health Check to check for any
Diagnostic Trouble Codes

NOTICE:
This campaign only covers the replacement of the DCM (Telematics,
Transceiver) and associated parts. It does not cover the diagnosis or
replacement of any other parts on the vehicle.

◄ VERIFY REPAIR QUALITY ►

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−
−
−

Confirm SOS Switch Light is Green
Confirm there are no DTC’s after the DCM update.
If you have any questions regarding this Campaign, please contact your area representative

IX. APPENDIX
A.

CAMPAIGN DESIGNATION DECODER

23LD03
23

L

D

03

Year Campaign
is Launched

Vehicle Make

Field Action Category and Phase

Field Action Sequence

19 = 2019
20 = 2020
21 = 2021
22 = 2022
23 = 2023
Etc...

T = Toyota
L = Lexus

A = Safety Recall Remedy
B = Safety Recall Interim
C = Special Service Campaign
D = Limited Service Campaign
E = Customer Support Program
F = Emissions Recall
(May use other characters in unique cases)

01 = 1 st Field Action of the year
02 = 2 nd Field Action of the year
03 = 3 rd Field Action of the year
(The sequence is unique for each Field
Action category)
(May use other characters in unique
cases)

Examples:
19TA01 = Launched in 2019, Toyota, Safety Recall Remedy Phase, 1st Safety Recall Launched in 2019
20TC02 = Launched in 2020, Special Service Campaign, 2nd Special Service Campaign Launched in 2020
21TE05 = Launched in 2021, Customer Support Program, 5th Customer Support Program Launched in 2021

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