Service bulletins for the 2021 Acura TLX
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.
132 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| BTI&07272023903 | 2023-08-03. Service bulletin. SERVICE BRAKES. Dealer Message -American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S’s with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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. |
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| BTI&06152023901 | 2023-06-21. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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&06012023904 | 2023-06-15. Service bulletin. STEERING; SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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. |
| ATI&05162023906 | 2023-05-31. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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. |
| ATI&05012023905 | 2023-05-11. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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. |
| ONL6WU04282023 | 2023-05-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING. Owner Notification Letter - An owner's notification that the owner has not completed the emissions recall for an improperly functioning on-board emission-related diagnostic system. |
| ATI&04172023905 | 2023-04-27. Service bulletin. SERVICE BRAKES; STEERING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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&03302023904 | 2023-04-04. Service bulletin. SERVICE BRAKES; STEERING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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&03242023903 | 2023-03-29. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Driver’s door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously. |
| ATI&03162023907 | 2023-03-23. Service bulletin. PARKING BRAKE; STEERING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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. |
| B23-010 | 2023-03-23. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - Under certain circumstances, the vehicle may experience driveability concerns. This may result in the following DTC’s to set: • P0300 (Random Misfire Detected), • P0301 (No. 1 Cylinder Misfire Detected), • P0302 (No. 2 Cylinder Misfire Detected), • P0303 (No. 3 Cylinder Misfire Detected), • P0304 (No. 4 Cylinder Misfire Detected), • P0172 (Fuel System Too Rich) |
| BTI&03102023908 | 2023-03-18. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Driver’s door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously. |
| BTI&03022023901 | 2023-03-17. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX Type S's with a client complaint of a front brake noise while turning. The noise can be described as a low frequency groan noise. 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. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Must be a Type S vehicle. 2. Must be able to duplicate the front brake noise. 3. Vehicle has not been involved in a collision. 4. Brake pads have not been replaced & the discs have not been replaced previously. 5. No repair has been attempted for this issue. |
| BTI&02232023903 | 2023-03-02. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Driver’s door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously. |
| BTI&02072023901 | 2023-02-15. Service bulletin. PARKING BRAKE. Dealer Message- American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Driver’s door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously. |
| BTI&01182023903 | 2023-01-25. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. |
| BTI&01182023902 | 2023-01-25. Service bulletin. PARKING BRAKE; STEERING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 TLX Type S with a client complaint of a front brake noise. The noise can be described as a squeal/moan/groan/rubbing noise. The noise can also occur while turning. 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&01032023903 | 2023-01-11. Service bulletin. STEERING; PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 TLX Type S with a client complaint of a front brake noise. The noise can be described as a squeal/moan/groan/rubbing noise. The noise can also occur while turning. 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&01032023901 | 2023-01-11. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. |
| BTI&01032023901 | 2023-01-11. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. |
| BTI&12132022904 | 2022-12-21. 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&12132022903 | 2022-12-21. Service bulletin. STEERING; SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 TLX Type S with a client complaint of a front brake noise. The noise can be described as a squeal/moan/groan/rubbing noise. The noise can also occur while turning. 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&12132022901 | 2022-12-21. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Driver’s door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously. |
| BTI&11282022908 | 2022-12-06. Service bulletin. SERVICE BRAKES; EQUIPMENT:OTHER:LABELS. Dealer Message - Background American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Driver’s door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously. |
| BTI&11282022904 | 2022-12-06. Service bulletin. SERVICE BRAKES; STEERING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 TLX Type S with a client complaint of a front brake noise. The noise can be described as a squeal/moan/groan/rubbing noise. The noise can also occur while turning. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.