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Service bulletins for the 2015 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.

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

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Only bulletins with component: Automatic transmission are shown. Show all

Bulletins, newest first
BTS-151101 V22021-05-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Replacement TCMs don’t come with trim data. After installation, you need to run a teach-in (hydraulic pressure characteristic calibration) procedure with the HDS. The problem is that A/T DTC P287C (transmission adaptive values not learned) is set, which prevents teach-in. This happens because the TCM is programmed to look for trim data any time the ignition is cycled. If the TCM doesn’t see that trim data, it sets A/T DTC P287C. If any DTCs are set, the TCM won’t initiate teach-in and, as a result, can’t learn the trim data. It’s a classic catch-22 situation.
SB-16-0122021-05-13. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. BACKGROUND American Honda has made several shift quality improvements in the 2015 and 2016 TLX V6. SYMPTOM There is a sensation of acceleration while coasting down a hill. There is a sensation of a surge while braking. The transmission feels like it stays in gear too long. CORRECTIVE ACTION Update the TCM software. Clear all DTC’s created during the update and do the idle learn procedure. This software update will change the way the transmission shifts. After the update it may take up to 30 miles for the transmission to adapt to the client’s driving habits.
ONLKG5030820192019-03-15. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. Owner Notification Letter - Our records indicate that a PRODUCT UPDATE has not been completed on this vehicle, refer to the address card for the affected VIN. Your TLX previously had the transmission replaced because of a leaking 9-speed automatic transmission fluid (ATF) warmer. As the issue was under investigation when the transmission was replaced, your vehicle needs further action before it is completely repaired.
ONLKG2030820192019-03-15. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. Owner Notification Letter - Our records indicate that a PRODUCT UPDATE has not been completed on this vehicle, refer to the address card for the affected VIN. The automatic transmission fluid (ATF) warmer was improperly manufactured and may allow the engine coolant and ATF to mix. If the coolant and ATF mix, the engine and transmission may be damaged and require replacement.
B17-0112018-03-13. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. Service bulletin - Some 9-speed transmission warmers were improperly manufactured and allow the engine coolant and ATF to mix. If the fluids mix, the engine and transmission may be permanently damaged and require replacement.
Customer Letter2017-12-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. Customer letter - On a limited number of 2015?16 TLX vehicles, the automatic transmission fluid (ATF) warmer was improperly manufactured and may allow the engine coolant and ATF to mix. If the coolant and ATF mix, the engine and transmission may be damaged and require replacement. If the ATF warmer allows coolant and ATF to mix, you may notice one or more of the following symptoms: ? The vehicle overheats ? The transmission shifts poorly ? The transmission chirps during 3-4 shift
Customer Letter2017-11-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Customer letter - Your 2015?16 TLX previously had the transmission replaced because of a leaking 9-speed automatic transmission fluid (ATF) warmer. As the issue was under investigation when the transmission was replaced, your vehicle needs further action before it is completely repaired.
B17-0342017-09-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; ENGINE. Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]). The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter.
B17-0342017-09-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]).
Service Bulletin2017-08-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Service bulletin - During manufacturing of the 9-speed automatic transmission, it is possible that contamination may get into the parking pawl, or the park rod may become dislodged or broken, both of which can prevent the transmission from shifting into park. Although the shift indicator will display ?Park,? the park lock may not engage, allowing the vehicle to roll away and increasing the risk of a crash.
DLR MSG - Stop S2017-08-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Dealer message - On December 3, 2014 Acura notified NHTSA of a Stop Sale order and Safety Recall for approximately 9,500 TLX V6 vehicles. During manufacturing of the 9speed automatic transmission, it is possible that contamination may cause the parking pawl not to engage or the park rod may have been damaged during assembly and could dislodge, both of which can prevent the transmission from shifting into the Park position. Although the shift indicator will display ?Park?, the Park Lock may not engage allowing the vehicle to roll away, increasing the risk of a crash.
DLR MSG - Acura2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Dealer message - In Preparation for inventory inspections related to "Rolls In Park" condition on 2015V6TLX9-AT units: Inspectors will be in certain markets clearing inventory as soon as Tuesday afternoon Dec. 16th. Please be prepared prior to the arrival of your inspector so we can quickly clear your inventory and then move to clear other dealerships inventory. If unprepared, inspectors are instructed to move to the next dealership in order to maximize market clearing.
DLR MSG - Acura2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION. Dealer message - As approximately 3,000 TLX V6s are on STOP SALE, awaiting transmission inspections, there is an opportunity to address these vehicles now. We encourage dealers to update any new or used vehicles in dealer stock per S/B 14-054, Product Update: Cross-Traffic Monitoring System ? No Audible Alert prior to sale in order to avoid future customer inconvenience.
B17070B2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION. Service news article - Because of a transmission case casting flaw, the inside of the torque converter bracket hole in some 9-speed A/Ts is porous enough that ATF could leak from the hole. This flaw was found by the transmission factory during production.
Service Bulletin2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Service bulletin - Due to a potential problem during manufacture in the 9-speed automatic transmission, the transmission may not shift into "Park" when the driver selects the "Park" position on the electronic gear selector. Although the shift indicator will display "Park", the park lock may not engage, allowing the vehicle to roll away and increasing the risk of a crash
DLR MSG - Acura2017-08-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION. Dealer message - The METER reflash process for Cross Traffic Monitoring System inadvertently erases the idle characteristics learned by the PCM, and the HDS shows Idle Torque Learning as "Not Completed." The drivability symptoms which can result from this condition range from harsh 2-1 downshift, high rpm at idle, surging coming to a stop, and idle fluctuation.
DLR MSG - Acura2017-07-31. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; PARKING BRAKE. Dealer message - During the first week of February 2015, Acura TLX V6 owners with affected VINs will receive safety recall notices for a potential risk of vehicle roll away due to the transmission not physically shifting into Park when a driver selects Park on the gearshift selector.
DLR MSG - Acura2017-07-31. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; PARKING BRAKE. Dealer message - During manufacturing of the 9-speed automatic transmission, it is possible that contamination may cause the parking pawl not to engage or the park rod may have been damaged during assembly and could dislodge, both of which can prevent the transmission from shifting into the Park position even if the driver has selected the Park position with the gear selector. Although the shift indicator will display "Park", the Park Lock may not engage allowing the vehicle to roll away, increasing the risk of a crash.
B15-0242017-07-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. Service bulletin - The PCM software does not meet OBDII regulations. Update the PCM software.
Service Bulletin2017-07-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; PARKING BRAKE. Service bulletin - Acura has decided that a defect relating to motor vehicle safety exists in certain 2015 model year TLX vehicles. During installation of the park rod and the Electronic park release shaft, there are two issue that may have occurred. If either of these conditions cocurs, the tranmission may not shift into Park.
Service Bulletin2017-07-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. Service bulletin - The 8-speed dual-clutch transmission (DCT) slips or shifts hard when cold, usually on 1st to 2nd upshifts. The client may also report about feeling bumped or jerked once the vehicle has come to a stop. After the transmission warms up, it shifts normally.
Service Bulletin2017-07-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Service bulletin - The 8-speed dual-clutch transmission (DCT) slips or shifts hard when cold, usually on 1st to 2nd upshifts. The client may also report about feeling bumped or jerked once the vehicle has come to a stop. After the transmission warms up, it shifts normally. The PCM settings, along with the odd and even clutches having not been properly broken in.
B17-0152017-06-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). SERVICE BULLETIN - THE 8-SPEED DUAL-CLUTCH TRANSMISSION (DCT) HAS A BUMP OR HARD SHIFT WHEN COMING TO A STOP, USUALLY ON THE DOWNSHIFT FROM 2ND TO 1ST. THIS SYMPTOM IS INTERMITTENT AND MAY BE DIFFICULT TO DUPLICATE.
B15-0212017-06-30. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION. SERVICE BULLETIN - THIS BULLETIN IS REPLACED BY 17-015, 8-SPEED DCT HAS A BUMP OR HARD SHIFT WHEN COMING TO A STOP
B15-0402017-06-30. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). SERVICE BULLETIN - UNDER VERY SPECIFIC DRIVING CONDITIONS THE CUSTOMER MAY NOTICE THE 2-3 UPSHIFT IS MORE PRONOUNCED (FIRMER) THAN THE OTHER SHIFTS. THE TRANSMISSION IS WORKING PROPERLY AND THIS DOES NOT INDICATE A PROBLEM. THIS IS NOT A DURABILITY CONCERN. TO GET OPTIMAL PERFORMANCE OUT OF THE TRANSMISSION, UPDATE THE TCM SOFTWARE, CLEAR ANY DTCS, AND DO THE PCM IDLE LEARN PROCEDURE.

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