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:
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25
20
TECHNICAL INSTRUCTIONS
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0,
FOR
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be
SPECIAL SERVICE CAMPAIGN 23LD01
ov
TOW CONVERTER NOT INSTALLED
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on
N
CERTAIN 2021 MODEL YEAR RX350
01
Ex
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 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
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N
ov
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-
•
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
23
LD
•
•
3
IV. BACKGROUND
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on
N
ov
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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 ►
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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
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
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on
N
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
6
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