2018 Acura TLX electrical system problems
19 owner complaints filed with NHTSA name the electrical system on the 2018 Acura TLX — 20% of all complaints for this model year.
What owners report
“I’ve bought my 2018 Acura TLX used from Holiday Mazda in [XXX] in XXX Now that my nightmare with the Auto Engine Idle is over(the shop that replaced my starter in November 2025 some how got it so it doesn’t work anymore. But that’s not my issue. I’ve had this issues 5-8 times in the last 2 years. I…”
filed Jun 10, 2026
“Odometer Fraud. The contact purchased a 2018 Acura TLX. The contact stated that it was discovered that there was a mileage discrepancy. The vehicle was purchased on September 10th, 2025, as a dealer sale. At the time of purchase, the vehicle mileage was 76,410. At the time of registration, when the…”
filed Oct 24, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
"Customer letter - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. To ensure your confidence in your vehicle. Acura is extending the…
Defect Code 6T6, · Service Bulletin/Repair Instructions · issued Jun 15, 2022
Electrical System problems in other TLX years
| Year | Reports | Share |
|---|---|---|
| 2022 TLX | 4 | 17% |
| 2021 TLX | 9 | 14% |
| 2020 TLX | 9 | 15% |
| 2019 TLX | 12 | 13% |
| 2017 TLX | 8 | 12% |
| 2016 TLX | 24 | 22% |
| 2015 TLX | 64 | 19% |
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.