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Service bulletins for the 2020 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.

50 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
B22-0082022-05-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Service bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.
B22-0092022-04-07. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE. "Service bulletin - Under certain circumstances, after coming to a stop and engaging idle stop the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the client can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. Acura is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years from the original date of purchase with no mileage limitation."
B22-0082022-04-07. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "Service bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button."
BTI&032820229032022-04-07. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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.
BBOM033020229012022-04-07. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. "Dealer message - Today, March 30, 2022, Acura is announcing a product update and warranty extension for certain 2015-2020 TLX vehicles to update the PGM-FI software that may affect the idle stop operation and starter under certain conditions. Acura is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years from the original date of purchase with no mileage limitation. Perform an iN VIN status inquiry to determine which units in your inventory are affected."
BTI&031120229042022-03-15. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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&022220229022022-03-02. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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&020720229012022-02-15. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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&012120229022022-01-26. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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&010320229042022-01-12. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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&121520219022021-12-22. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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&112920219092021-12-03. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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&111620219042021-11-24. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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.
B21100A2021-11-16. Service bulletin. AIR BAGS; SEATS. ServiceNews Article - There are several possible causes for the SRS DTC U3000-49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-step process in isolating the faulty component. In most situations, the SRS Unit should be last on the list of components to replace. Here is a quick tip for troubleshooting a faulty seat weight sensor.
BTI&103020219022021-11-03. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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.
B21100A2021-10-28. Service bulletin. AIR BAGS; SEATS. ServiceNews Article - There are several possible causes for the SRS DTC U3000-49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-step process in isolating the faulty component. In most situations, the SRS Unit should be last on the list of components to replace. Here is a quick tip for troubleshooting a faulty seat weight sensor.
BTI&101320219012021-10-19. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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.
BPaS092720212021-10-06. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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.
BPaS092320219022021-10-06. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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.
BPaS083020212021-09-02. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) 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.
BPaS042220219022021-04-27. 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.
BPaS033020219012021-04-06. 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.
B20-0152020-11-03. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Service Bulletin - The transmission has intermittent harsh or jerky upshifts with steady acceleration.
B20-0132020-03-11. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Service Bulletin - The navigation display distorts after driving 1 or more hours. Also, the distance and time to travel does not update, the navigation icon shows the vehicle in the wrong location, and the touch screen does not respond.
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.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.