Service bulletins for the 2021 Acura RDX
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.
194 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| BTI&11122022910 | 2022-11-15. Service bulletin. VISIBILITY. 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. |
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| BTI&11072022905 | 2022-11-15. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| BTI&11082022904 | 2022-11-15. Service bulletin. VISIBILITY. 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&11042022902 | 2022-11-08. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 RDXs with a client complaint of a front and/or rear brake noise which can be described as a squeal. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| BTI&11042022901 | 2022-11-08. Service bulletin. VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. 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&10252022902 | 2022-11-01. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; VISIBILITY. 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&10212022903 | 2022-10-24. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| BTI&10212022902 | 2022-10-24. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 RDXs with a client complaint of a front and/or rear brake noise which can be described as a squeal. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| BTI&10212022901 | 2022-10-24. Service bulletin. VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. 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&10142022903 | 2022-10-19. Service bulletin. VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| BBTS221001 | 2022-10-12. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; VISIBILITY. 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&10062022908 | 2022-10-12. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| BTI&10062022906 | 2022-10-12. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; VISIBILITY. 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&10072022902 | 2022-10-12. Service bulletin. PARKING BRAKE; SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 RDXs with a client complaint of a front and/or rear brake noise which can be described as a squeal. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| B22-017 | 2022-09-27. Service bulletin. ENGINE AND ENGINE COOLING. "Service Bulletin - Engine does not auto restart after entering into auto Idle Stop. The Idle Stop criteria was incorrect and allowed Idle Stop to engage when battery health is insufficient." |
| BTI&09232022902 | 2022-09-27. Service bulletin. VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. 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&09192022901 | 2022-09-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 RDXs with a client complaint of a front and/or rear brake noise which can be described as a squeal. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| BTI&09152022901 | 2022-09-22. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM. 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&09092022901 | 2022-09-14. Service bulletin. STRUCTURE; VISIBILITY. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. 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&08252022902 | 2022-09-09. Service bulletin. VISIBILITY; STRUCTURE. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| B21-029 | 2022-09-09. Service bulletin. ELECTRICAL SYSTEM. Service bulletin - As of August 23, 2022, the Product Improvement Campaign has ended. The TCU can no longer be updated using Over The Air updates. If the customer needs to restore TCU services, the only option is to replace the TCU. This would be done as a customer pay repair. |
| BTI&08102022903 | 2022-09-09. Service bulletin. STRUCTURE. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. 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&07262022903 | 2022-08-02. Service bulletin. STRUCTURE. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. 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&07212022901 | 2022-08-02. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM. 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&07112022903 | 2022-08-02. Service bulletin. STEERING. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 - 2022 RDXs with a client complaint of a screeching or squeal noise from any window when its going up or down. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.