Service bulletins for the 2018 Acura MDX
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.
145 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| BTI&07222021901 | 2021-07-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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&07072021906 | 2021-07-20. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 stored. 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&07072021902 | 2021-07-20. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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&06152021905 | 2021-06-22. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 stored. 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&06152021904 | 2021-06-22. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS05262021903 | 2021-06-04. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 stored. 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. |
| BPaS05262021902 | 2021-06-04. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS04222021902 | 2021-04-27. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 MDXs (non-Hybrid) & TLX V6s with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. 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. |
| BPaS04222021901 | 2021-04-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS04162021 | 2021-04-21. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTC P030X (Please provide the full DTC description) stored. 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. |
| BPaS03302021901 | 2021-04-06. Service bulletin. FUEL SYSTEM, GASOLINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 MDXs (non-Hybrid) & TLX V6s with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. 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. |
| BPaS03252021901 | 2021-04-06. Service bulletin. SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:BRAKING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS02262021901 | 2021-03-02. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS02102021907 | 2021-02-18. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BQDP01282021 | 2021-02-03. Service bulletin. STRUCTURE. Dealer Message - American Honda has been notified by our supplier of manufacturing defect resulting in a potential cosmetic/appearance imperfections. Due to this investigation, American Honda is requesting all dealers to return any uninstalled inventory to American Honda for investigation and validation by the supplier. |
| BPaS01222021901 | 2021-01-30. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS01062021901 | 2021-01-14. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS12052020902 | 2020-12-09. Service bulletin. SERVICE BRAKES; EQUIPMENT. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| ONLJ8F11022020 | 2020-11-11. Service bulletin. POWER TRAIN. Owner Notification Letter - When the powertrain control module (PCM) detects a malfunction in one of the odd number transmission gears, it will set one of four diagnostic trouble codes (DTCs). Due to inappropriate calibration of the PCM, the On Board Diagnostic (OBD) system cannot properly clear the transmission permanent DTC as required. |
| BPaS11042020902 | 2020-11-11. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| B20-041 | 2020-11-11. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - A chirping in the cabin with the engine running, the transmission in Drive, and the engine at operating temperature. |
| B20-015 | 2020-11-03. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Service Bulletin - The transmission has intermittent harsh or jerky upshifts with steady acceleration. |
| BPaS10162020903 | 2020-10-21. Service bulletin. SERVICE BRAKES; EQUIPMENT. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BPaS09282020903 | 2020-10-03. Service bulletin. EQUIPMENT; SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDXs with a client complaint of an unexpected CMBS operation or a brake application. 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. |
| BBOM09152020 | 2020-09-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Dealer Message - Today, September 15, 2020, Acura is announcing a stop sale and emissions recall for certain 2017-2020 MDX Sport Hybrid and 2014, 2016-2020 RLX Sport Hybrid vehicles that may not properly clear specific diagnostic trouble codes (DTC). Presence of these codes may prevent the vehicle from passing a smog test. Refer to your eResponsibility report or do an iN VIN status inquiry to determine which units in your inventory are affected. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.