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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.

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By component

By trouble code

Bulletins, newest first
BPaS081420199042019-08-20. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 MDXs & TLXs with a client complaint of a chirp noise heard from inside the cabin or coming from the engine compartment. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS073020199032019-08-03. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 MDXs & TLXs with a client complaint of a chirp noise heard from inside the cabin or coming from the engine compartment. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS071920199012019-07-26. Service bulletin. ENGINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 MDXs & TLXs with a client complaint of a chirp noise heard from inside the cabin or coming from the engine compartment. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
B18-0602019-07-26. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Service Bulletin - The audio unit will reboot on its own at times or CarPlay does not work after iPhone updates.
B19050B2019-06-06. Service bulletin. ELECTRONIC STABILITY CONTROL (ESC). ServiceNews Article - When removing and installing a cable reel, you need to keep both the cable reel and the steering angle sensor in position. If you don't, the VSA indicator may come on along with one or more VSA DTCs. And when you run the Neutral Memorization Procedure in the i-HDS, it won't complete.
B19-0052019-03-14. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. "Service Bulletin - The vehicle may exhibit several of the following symptoms: - Multiple indicators are on. - No communication with the i-HDS. - The option fuse (7.5 A) is blown. - MDX: Fuse E21 - TLX: Fuse B7 - MDX: It is hard to shut off the engine. - TLX: The transmission will not shift from park."
B19-0052019-02-26. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; VISIBILITY. "Service Bulletin - The vehicle may exhibit several of the following symptoms: - Multiple indicators are on. - The option fuse E21 (7.5 A) is blown. - It is hard to shut off the engine. - No communication with the i-HDS."
B18-0602019-02-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. Service Bulletin - The audio unit will reboot on its own at times or CarPlay does not work after iPhone updates. There is a software problem within the audio unit. Update the audio unit software.
B19-0042019-02-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. Service bulletin - The transmission judders, shudders, or surges while driving. The transmission fluid has deteriorated prematurely.
B18-0732019-01-05. Service bulletin. FUEL SYSTEM, GASOLINE; LATCHES/LOCKS/LINKAGES. Service bulletin - The fuel fill door rear edge does not line up properly when closed. The fuel fill door latching mechanism does not line up properly.
B17120D2018-12-04. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. Servicenews Article - If any of the accessory rear parking sensors look crooked or have recessed into the bumper, make sure the two clips on the rear bumper harness were removed as called out in the installation instructions. If they weren't, they can cause too much tension on the sensors with the harness installed, resulting in this issue.
B18-0602018-11-13. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL; EQUIPMENT. Service bulletin - The audio unit will reboot on its own at times. There is a software problem within the audio unit.
BPaS101720189012018-10-29. Service bulletin. SERVICE BRAKES. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of vibration in the steering wheel while braking. To fully 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.
BER18090C2018-10-15. Service bulletin. STEERING. Engineering request for investigation - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of vibration in the steering wheel while braking. To fully 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.
BPaS092120189012018-10-15. Service bulletin. STEERING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of vibration in the steering wheel while braking. To fully 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.
BPaS091720189042018-10-15. Service bulletin. SEATS. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of the 2nd row seats false latching. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
B15-0392018-10-15. Service bulletin. POWER TRAIN. Service bulletin - The transmission end cover leaks on vehicles with 9-speed A/T. During assembly, the transmission end cover sealing gasket gets torn.
B16-0082018-10-01. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. Service bulletin - The high pressure fuel pump area chirps after the engine is warm. The high pressure fuel pump is making a chirp.
BPaS083120189032018-09-17. Service bulletin. SEATS. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of the 2nd row seats false latching. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS081520189042018-09-17. Service bulletin. SEATS. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of the 2nd row seats false latching. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS081520189032018-09-17. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018 MDXs a client complaint of the auto idle stop inoperative. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BER18070B2018-09-04. Service bulletin. SEATS. Engineering request for investigation - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of the 2nd row seats false latching. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS073120189012018-08-20. Service bulletin. SEATS. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2014-2018 MDXs with a client complaint of the 2nd row seats false latching. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS072720189032018-08-20. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018 MDXs a client complaint of the auto idle stop inoperative. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS070920189032018-08-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018 MDXs a client complaint of the auto idle stop inoperative. To fully 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.