2019 Subaru Ascent forward collision avoidance problems
11 owner complaints filed with NHTSA name the forward collision avoidance on the 2019 Subaru Ascent — 2% of all complaints for this model year.
What owners report
“All the safety systems become disabled and check Engine light goes on because transmission fluid is being pumped Out of a faulty secondary pressure sensor part 31878aa020,( defective and replaced with 31878aa021), into the engines wiring at the car computer, transmission computer, and bulkhead…”
filed Aug 6, 2026
“NHTSA Vehicle Safety Complaint Vehicle: 2019 Subaru Ascent VIN: [XXX] Mileage: 72,093 miles I am submitting this complaint because my 2019 Subaru Ascent experienced a serious transmission-related electrical failure that may represent a broader safety defect. Sewell Subaru of Dallas diagnosed an…”
filed Aug 1, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Forward Collision Avoidance problems in other Ascent years
| Year | Reports | Share |
|---|---|---|
| 2024 Ascent | 4 | 8% |
| 2023 Ascent | 7 | 16% |
| 2022 Ascent | 5 | 9% |
| 2021 Ascent | 7 | 7% |
| 2020 Ascent | 12 | 4% |
Other reported problem areas on the 2019 Subaru Ascent
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.