2017 Subaru Legacy electrical system problems

30 owner complaints filed with NHTSA name the electrical system on the 2017 Subaru Legacy — 25% of all complaints for this model year.

Electrical System complaints

25%

share of all complaints

—

median reported incident mileage

0 / 1

crash / fire reports

What owners report

“Since the battery replacement settlement I've had 3 batteries die from my car being off, the latest battery replacement was 3/2026. I can't tell what my milage is since the battery is so dead that none of the displays turn on when I hit the start button”
filed Sep 5, 2026
“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

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

This Announcement provides diagnostic assistance for CVT issues.
SubaruNet Announcement (C · Other · issued Aug 21, 2026
This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or…
15-308-23R · Service Bulletin/Repair Instructions · issued Aug 20, 2026
This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. (This is an revised version of the original bulletin.)
15-304-22R · Service Bulletin/Repair Instructions · issued Aug 13, 2026
Techtips newsletter locator index.
Article Locator · Other · issued Aug 5, 2026
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. This is an revised version of the original bulletin
15-333-25R · Service Bulletin/Repair Instructions · issued Aug 1, 2026