B23-013

Service Bulletin
23-013
July 17, 2023
Version 2
RDX/MDX Sunroof and Sunshade Function Loss
Supersedes 23-013, dated May 23, 2023, to revise the information highlighted in yellow.
AFFECTED VEHICLES
Year
Model
Trim
VIN Range
2019–23
RDX
ALL
ALL
2022–23
MDX
ALL
ALL
REVISION SUMMARY
Under PARTS INFORMATION, new parts were added.
SYMPTOM
The client notices loss of auto function, or no function, of the sunroof glass/sunshade.
POSSIBLE CAUSE
Motor-Control Unit error code in the clock frequency check will falsely detect a failure.
CORRECTIVE ACTION
Replace both roof glass motor and sunshade motor.
PARTS INFORMATION
Model
Part Name
Part Number
Quantity
RDX
Sunroof/Sunshade Motor Assembly
70450-TJB-A52
2
RDX
RR. Pillar Garnish Clip
91561-TA5-A11
2
MDX
Sunroof/Sunshade Motor Assembly
70450-TYA-A51
2
MDX
RR. Pillar Garnish Clip
91561-TA5-A11
4
CLIENT INFORMATION:The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume
this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an
authorized Acura automobile dealer.
©
2023 American Honda Motor Co., Inc. — All Rights Reserved
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WARRANTY CLAIM INFORMATION
The normal warranty applies.
Model
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom Template
Code
ID
Failed Part Number
RDX
729140
Replace Moonroof
motor
2.0 hr
03214
03217
B23013A
70450-TJB-A51
F
For Sunshade
motor-Add
0.1 hr
729140
Replace Moonroof
motor
3.4 hr
03214
03217
B23013B
70450-TYA-A02
F
For Sunshade
motor-Add
0.1 hr
MDX
Skill level: Repair Technician
REPAIR PROCEDURE
1. In Service Information, refer to Panoramic Glass Roof Mechanical Component Location Index for both glass roof
and sunshade motor replacement procedure.
2. After installation, follow the procedure for Resetting the Panoramic Glass Roof Motor-Control Unit and Sunshade
Motor Control Unit.
3. Verify proper roof glass and sunshade auto open/close operations.
END
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