2020 Subaru Legacy Electrical system Problems
- Complaints
- 15about this part
- Share
- 12%of 121 total for the year
- Median mileage
- 7,814miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 15 complaints about the electrical system of the 2020 Subaru Legacy, 12% of the 121 complaints for this model year. Where a mileage was given, the median is 7,814 miles. 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Radio and control unit randomly restarts and freezes, affecting the radio from working, the vehicle control and driving assistance options, and the two usb ports which are the only power sources in the vehicle from working correctly. I have no audio and cannot reset the radio and cannot change vehicle control functions. When I select certain buttons it does nothing.”
NHTSA complaint #11396240, filed 2021-02, 14,628 miles“The front door window regulator of our 2020 Subaru Legacy is not working properly. It fails to raise and lower correctly and reliably which can be a safety issue especially in an emergency. The problem occurred without any prior warnings or messages. I am told by the dealership (Bob Moore Subaru of Oklahoma City) that it is part #61041AN00A that requires replacement.”
NHTSA complaint #11555488, filed 2023-11“The battery discharged to the point where I was unable to start the car. I had been driving all day and was waiting for my wife for half an hour with the radio on. This left us stranded about 15 miles from home. I had to call to have someone take my wife home while I waited for a tow truck. My battery also discharged to the point where I couldn't start my car after the car sat overnight. I needed to take my son to a doctor's appointment, and I had to cancel the appointment. And no, I didn't leave the lights on or a door open.”
NHTSA complaint #11462088, filed 2022-04“BATTERY ISSUES. maybe stemming from internal components (unsure, but likely). car completely died, when lights and all settings were turned off. bought a jump starter thinking maybe i just left something on, drove around for like an hour to juice it up and power the battery. went to car today and dead again. cannot access trunk (where i put my emergency stuff) because it's completely dead. called and had to wait 3 hours for a jumpstart after subaru automated roadside assistance hung up 4 times before i even got to speak to a representative. scheduled an appt for new car battery. …”
NHTSA complaint #11436894, filed 2021-10“Thermo Control Valve has malfunctioned. It disables all driver assistance, like lane assist, blind spot, RAB, collision braking, etc. I have seen on many forums that this is a known issue, across multiple vehicles from Subaru from 2019 to about 2021. The was a TSB put out about a new and improved part to fix this known issue.”
NHTSA complaint #11544993, filed 2023-09Related service bulletins
- 11037943Oct 5, 2026This announcement provides information on a new software update for the Midtronics Dss and DCA machines.
- 11037942Sep 28, 2026This announcement provides information on an enhancement of the TechShare CVT diagnostic assitance application.
- 11037938Sep 18, 2026"This Bulletin announces additional troubleshooting steps for the following DTCs: DTC C1956: RH Actuator Circuit DTC C1957: LH Actuator Circuit"
- 11037929Sep 14, 2026This 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…
- 11037928Sep 14, 2026In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen 3.1 Head Unit used in the listed…
- 11037927Sep 14, 2026This 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…
- 11036823Aug 31, 2026This bulletin announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4 Denso CP1 Audio and Navigation head units…
- 11036804Aug 21, 2026This Announcement provides diagnostic assistance for CVT issues.
- 11036807Aug 20, 2026This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is…
- 11036796Aug 13, 2026This 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…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 5 | 29% |
| 2023 | 1 | 10% |
| 2022 | 3 | 9% |
| 2021 | 5 | 16% |
| 2020 | 15 | 12% |
| 2019 | 35 | 28% |
| 2018 | 40 | 34% |
| 2017 | 30 | 25% |
| 2016 | 51 | 35% |
| 2015 | 37 | 23% |
| 2014 | 11 | 21% |
| 2013 | 6 | 9% |
| 2012 | 4 | 4% |
| 2011 | 19 | 11% |
| 2010 | 12 | 8% |
| 2009 | 4 | 6% |
| 2008 | 9 | 14% |
| 2007 | 5 | 15% |
| 2006 | 17 | 20% |
| 2005 | 25 | 14% |
| 2004 | 1 | 2% |
| 2003 | 2 | 3% |
| 2002 | 2 | 4% |
| 2001 | 1 | 1% |
| 2000 | 6 | 6% |
| 1999 | 2 | 2% |
| 1998 | 9 | 8% |
| 1997 | 17 | 12% |
| 1996 | 21 | 17% |
| 1995 | 20 | 11% |
| 1994 | 1 | 2% |
| 1993 | 3 | 4% |
| 1992 | 3 | 5% |
| 1991 | 3 | 4% |
| 1990 | 1 | 1% |
Other parts of the 2020 Subaru Legacy
66 complaintsOther or unknown
26 complaintsForward collision avoidance
7 complaintsTransmission and drivetrain
7 complaintsEngine
4 complaintsVehicle speed control
4 complaintsBrakes
2 complaintsLane departure
2 complaintsAir bags
1 complaintsBack-over prevention (rear camera)
1 complaintsExterior lighting
1 complaintsFuel system
1 complaints
← All problems reported for the 2020 Subaru Legacy
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology