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NHTSA ID Number: 11027558

Manufacturer Communication Number: 23LD01

TSB/Document Date: 2026-01-09


Summary

23LD01 Expired on November 30, 2025 TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 23LD01 TOW CONVERTER NOT INSTALLED CERTAIN 2021 MODEL YEAR RX350


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TSB/Document ID: 23LD01

Replacement Service Bulletin Number:

MFR Communication Date: 2025-12-05

MFR Internal Campaign ID/Software Version: 23LD01

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: STRUCTURE:BODY

MFR Component System:

MFR Component Subsystem:


Previous TSB

Next TSB



25
20

TECHNICAL INSTRUCTIONS

r3

0,

FOR

em

be

SPECIAL SERVICE CAMPAIGN 23LD01

ov

TOW CONVERTER NOT INSTALLED

pi
re

d

on

N

CERTAIN 2021 MODEL YEAR RX350

01

Ex

The repair quality of covered vehicles is extremely important to LexuseBay logo. 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 repair are required to currently have completed all of
the following courses:

LIC206A – Electrical Repair 1

23

LD

It is the dealership’s responsibility to select technicians that have completed the above courses to
perform this 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

Not
Involved

0,

No further action required

r3

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

20

25

NOTE: The flow chart below 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.

be

Yes

em

Inspect for Tow Convertor in the vehicle

Tow Convertor Installed

on

N

Install Tow Convertor + Reassemble vehicle

ov

NO Tow Convertor Installed

Reassemble vehicle

Campaign complete
Return the vehicle to the customer

23

LD

01

Ex

pi
re

d

Complete vehicle lighting function test

2

II. IDENTIFICATION OF AFFECTED VEHICLES
A. CHECK VEHICLE FOR CAMPAIGN ELIGIBILITY
1. Compare the vehicles VIN to the VIN listed on the Repair Order to ensure they match.
2. Check the TIS Vehicle Inquiry System to confirm the VIN is involved in this Campaign, and that it

25

has not already been completed.

20

Note: TMNA warranty will not reimburse dealers for repairs completed on vehicles that are not affected or
were previously completed, even by another dealer.

0,

III. PREPARATION
Part Number

Part Description

PT725-48160

Hitch Converter Kit

r3

A. PARTS

Quantity
1

be

*The kit above includes the following parts:

Part Number

Part Description

Converter with Bracket
Bolt( M6)
30A Fuse

Quantity
1
1
1

pi
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d

on

N

ov

em

-

Torque wrench (100 lbf in)

Ex

B. TOOLS
• Standard hand tools
• Nylon removal tool

SST – There are no Special Service Tools required for this repair.

MATERIALS

01

C.

Vehicle protective blanket
Seat protectors

Safety glasses

23

LD


3

IV. BACKGROUND

pi
re

d

on

N

ov

em

be

r3

0,

20

25

The involved vehicles equipped with the Tow Prep Packages did not have the Tow Converter installed.

V.

WORK PROCEDURE

23

LD

01

Ex

A. INSPECTION
1. To inspect vehicle for the tow converter, start to disassemble the vehicle by following
the procedure outlined in step 3 of the Tow convertor installation instructions on TIS
2016-2022 RX350, RX450h Converter Kit (PT725-48160) Rev. C .
2. If the tow convertor is already installed, reassemble the vehicle following the
accessory instructions.

B. INSTALLATION
1. If the tow convertor is not installed in the vehicle, follow the steps in the accessory
installation instructions to install the tow converter, starting with safety preparation
steps 1 and 2, then proceeding with tow converter installation at step 4.
2016-2022 RX350, RX450h Converter Kit (PT725-48160) Rev. C
4

2. Once installation is complete, following the vehicle lighting function test per the table
below.
Action

Check for

1

Turn on headlamps

Marker and taillights are lit

2

Turn on left turn signal

Left turn lights are flashing, taillight are lit

3

Turn on right turn signal

Right turn lights are flashing, taillights are lit

4

Apply foot brake

Stop lights are lit, taillights are lit

5

Turn on left turn signal and apply foot

Left turn lights are flashing and right stop light
is lit, taillights are lit

6

Turn on right turn signal and apply foot

Right turn lights are flashing and left stop light
is lit, taillights are lit

7

Turn on hazard lights switch

All turn signal lights are flashing, taillights are
lit

8

With hazard lights switch on, apply the
foot brake

Both stop lights on the vehicle are lit, both
turn lights on vehicle are lit, taillights are lit

9

Turn off the hazard lights switch, turn off
headlamps, apply the foot brake

Stop lights are lit

N

ov

em

be

r3

0,

20

25

Step

on

Check Box
When
Complete

◄ VERIFY REPAIR QUALITY ►

pi
re

d

Confirm no scratches, scuffs or dents incurred during this process.
Complete vehicle lighting function test by checking all boxes as outlined above.
If you have any questions regarding this Limited Service Campaign, please contact your
Area representative.

23

LD

01

Ex

-

5

VI.

23LD01
L

D

Year Campaign
is Launched

Vehicle Make

Field Action Category and Phase

0,
r3

em

T = ToyotaeBay logo
L = LexuseBay logo

01 = 1 st Field Action of the year
02 = 2 nd Field Action of the year
03 = 3 rd Field Action of the year

be

A = Safety Recall Remedy
B = Safety Recall Interim
C = Special Service Campaign
D = Limited Service Campaign
E = Customer Support Program
F = Emissions Recall

Field Action Sequence

(May use other characters in unique cases)

(The sequence is unique for each Field
Action category)
(May use other characters in unique
cases)

ov

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

05

20

22

25

CAMPAIGN DESIGNATION DECODER

23

LD

01

Ex

pi
re

d

on

N

Examples:
19TA01 = Launched in 2019, ToyotaeBay logo, 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

6

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