2017 Subaru Legacy electrical system problems
29 owner complaints filed with NHTSA name the electrical system on the 2017 Subaru Legacy — 25% of all complaints for this model year.
What owners report
“The battery has died several times and had to be replaced over the years due to a likely slow drain issue that Subaru is well aware of and was part of a class action suit against them.”
filed Jan 28, 2026
“The key frequently gets stuck in the ignition. It takes several attempts to release the key. Turning the wheel to ensure the wheel isn’t locked and turning the ignition/car on does not help release the key from ignition.”
filed Oct 6, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability. (This is an revised version of the orignal bulletin.)
16-156-25R · Service Bulletin/Repair Instructions · issued Jun 2, 2026This bulletin announces the availability of reprogramming files for the Engine Control Module (ECM) for certain vehicles equipped with 3.6L engines.
02-195-26 · Service Bulletin/Repair Instructions · issued Jun 1, 2026
Electrical System problems in other Legacy years
| Year | Reports | Share |
|---|---|---|
| 2022 Legacy | 3 | 9% |
| 2021 Legacy | 5 | 16% |
| 2020 Legacy | 15 | 12% |
| 2019 Legacy | 35 | 28% |
| 2018 Legacy | 40 | 34% |
| 2016 Legacy | 51 | 35% |
| 2015 Legacy | 37 | 23% |
| 2014 Legacy | 11 | 21% |
| 2013 Legacy | 6 | 9% |
| 2012 Legacy | 4 | 4% |
| 2011 Legacy | 19 | 11% |
| 2010 Legacy | 12 | 8% |
Other reported problem areas on the 2017 Subaru Legacy
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.