2018 Acura TLX engine and engine cooling problems
11 owner complaints filed with NHTSA name the engine and engine cooling on the 2018 Acura TLX — 12% of all complaints for this model year.
What owners report
“The contact owns a 2018 Acura TLX. The contact received notification of NHTSA Campaign Number: 23V751000 (Engine and Engine Cooling). The contact stated that while driving on several occasions at various speeds and while the vehicle was idling, there was a valve tap coming from the engine…”
filed Nov 18, 2025
“The contact owns a 2018 Acura TLX. The contact stated the vehicle was included in NHTSA Campaign Number: 23V751000 (Engine and Engine Cooling), for a possible failure with the connecting rod, and the vehicle was repaired. Approximately 2-3 years after the recall repair, while driving 65 MPH, the…”
filed Jul 28, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Due to a manufacturing error, the connecting rod bearing in the engine may wear and…Campaign 23V751000 · Nov 13, 2023
Related service bulletins
Service Bulletin - The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441…
B23-035 · Service Bulletin/Repair Instructions · issued Jan 10, 2024Service Bulletin - Due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow…
B23-035 · Service Bulletin/Repair Instructions · issued Dec 15, 2023Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Acura is providing a product update with new PGM-FI software…
ONL6AX07052023 · Service Bulletin/Repair Instructions · issued Jul 5, 2023Service Bulletin - The engine will not crank on the initial startup attempt after the vehicle has been exposed to precipitation and then freezing temperatures. Water can enter the starter motor. In cold temperatures the…
B23-009 · Service Bulletin/Repair Instructions · issued Apr 20, 2023"Customer letter - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Acura is providing a product update with new PGM-FI software update to…
Defect Code 6AX, · Service Bulletin/Repair Instructions · issued Jun 14, 2022
Engine and Engine Cooling problems in other TLX years
| Year | Reports | Share |
|---|---|---|
| 2020 TLX | 8 | 13% |
| 2019 TLX | 13 | 14% |
| 2017 TLX | 10 | 14% |
| 2016 TLX | 14 | 13% |
| 2015 TLX | 14 | 4% |
Other reported problem areas on the 2018 Acura TLX
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.