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Service bulletin B23-013

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10237173
Published by NHTSA2023-06-02
Manufacturer's numberB23-013
Manufacturer's date2023-05-23
NHTSA componentSTRUCTURE; VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE:INTERIOR PANELS:SUN VISOR

NHTSA's summary

Service Bulletin - A driver can notice loss of auto function, or no function, of the sunroof glass/sunshade due to Motor-Control Unit error code in the clock frequency check falsely detecting a failure.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Body and frame, Glass, wipers and mirrors, Sunroof

Vehicles listed
ACURA MDX2019, 2020, 2021, 2022, 2023
ACURA RDX2019, 2020, 2021, 2022, 2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
B23-0132023-07-27. Service bulletin. Service Bulletin - The client may notice a loss of auto function, or no function, of the sunroof glass/sunshade due to a Motor-Control Unit error code in the clock frequency check falsely detecting a failure.
B23-0132023-07-21. Service bulletin. Service Bulletin - The client notices loss of auto function, or no function, of the sunroof glass/sunshade due to a Motor-Control Unit error code in the clock frequency check falsely detecting a failure.
BTI&102520229022022-11-01. Service bulletin. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022 MDXs & 2020-2022 RDXs with a client complaint of the auto-open/close function on the sunshade/sunroof being lost (client has to continuously press on the button for movement). To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BBTS2210012022-10-12. Service bulletin. Tech Line Article - If you are inspecting an MDX/RDX and notice a loss of auto function or no function of the sunroof/sunshade, please try these steps before removing any parts or trying any other repairs.
BTI&100620229062022-10-12. Service bulletin. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022 MDXs & 2020-2022 RDXs with a client complaint of the auto-open/close function on the sunshade/sunroof being lost (client has to continuously press on the button for movement). To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BTI&061620229012022-07-07. Service bulletin. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 RDXs & 2022 MDXs with a client complaint of deformed or damaged sunroof seals. To better understand the cause of this condition, AHM would like to obtain pictures of the sunroof seal prior to you attempting a repair of any kind.
BTI&060920229012022-07-07. Service bulletin. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 RDXs & 2022 MDXs with a client complaint of deformed or damaged sunroof seals. To better understand the cause of this condition, AHM would like to obtain pictures of the sunroof seal prior to you attempting a repair of any kind.
BTI&060220229022022-07-07. Service bulletin. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 RDXs & 2022 MDXs with a client complaint of deformed or damaged sunroof seals. To better understand the cause of this condition, AHM would like to obtain pictures of the sunroof seal prior to you attempting a repair of any kind.
BTI&032920229022022-04-07. Service bulletin. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 RDXs & 2022 MDXs with a client complaint of deformed or damaged sunroof seals. To better understand the cause of this condition, AHM would like to obtain pictures of the sunroof seal prior to you attempting a repair of any kind.
BTI&032920229012022-04-07. Service bulletin. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 RDXs & 2022 MDXs with a client complaint of the sunshade or sunroof closing partially before reversing open or will not move in the closing direction from any position. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.