This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.
full bulletin at NHTSA ↗2011 Subaru Legacy electrical problems
severe 15 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$850
1fire
When does it fail?
Of the 15 electrical complaints filed for the 2011 Subaru Legacy, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 15 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin contains information to help when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully
full bulletin at NHTSA ↗This Service Information Bulletin was developed to provide interim guidance for 2026 model year vehicles exhibiting DTC B2A20 with gen 4 Telematics.
full bulletin at NHTSA ↗This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.
full bulletin at NHTSA ↗This Subaru service and technical support line newsletter provides information on the next phase of TechShare.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Electrical gremlins plague this model across multiple systems. Headlight bulbs fail repeatedly—some owners replace them four to six times within a few years—despite trying different brands. One service advisor told an owner the circuit is designed so that when one low beam burns out, excess current flows to the remaining bulb and kills it prematurely. Subaru extended the bulb warranty but owners remain convinced the electrical supply, not the bulbs, is faulty.
Braking issues create immediate danger. Hard brake application causes the engine to stall and all electrical systems to shut down. This does not happen with gradual braking, but sudden hard stops trigger the failure—a hazard for following traffic.
One 2011 Legacy caught fire under the hood while on the freeway. The battery light came on, power steering got heavy, all warning lights flickered, and smoke filled the cabin before the vehicle was engulfed in flames.
Moisture also causes problems. Brake lights and parking brake lights malfunction when the undercarriage gets wet. The parking brake cannot even be engaged during rain.
Beyond headlights, owners report steering wheel audio controls failing intermittently, seat warmer fuses blowing repeatedly, clock memory loss, and engine stalling during normal driving or deceleration. Repair costs for modules and switches run $300–$440 or more per component. The scope and variety of electrical failures—from safety-critical systems like headlights and brakes to convenience features—suggests systemic wiring or module issues rather than isolated part defects.
Failure modes owners describe
Premature Low-Beam Headlight Burnout
Low-beam bulbs fail repeatedly far sooner than expected. Owners report replacing bulbs 4–6 times within 1–4 years of ownership. One owner attributes this to a design flaw where current overloads the remaining bulb when one burns out. Subaru extended headlight bulb warranty but owners dispute that bulbs (not electrical supply) are the root cause.
When: Within 1–4 years of ownership; no specific mileage pattern noted except one case at 93,000 miles
Symptoms owners cite: Low-beam bulbs burn out frequently and unexpectedly; Failure occurs seemingly at random; Both bulbs eventually affected; dealer recommends replacing both at once; Multiple brand bulbs tested with same results
Repairs/costs cited: Bulb replacement required; labor costs vary widely between dealers. Some owners tried different brand bulbs without success.
Recalls/TSBs owners mention: Subaru of America extended warranty on bulbs and offers replacement or refund, though owners report refund requirements are stringent. No recall issued; no acknowledgment of electrical system defect.
Stalling When Braking Hard
Engine stalls and all electrical systems shut off when braking hard to a complete stop. Does not occur during slow, gradual braking. One owner noted this mirrors a similar reported issue (reference 10395739) and claims multiple similar reports exist online for Subaru vehicles.
When: Occurs intermittently during hard-braking events; no specific mileage reported
Symptoms owners cite: Engine stalls upon hard brake application; All electrical systems shut off; Does not occur with gradual, slow braking; Creates safety hazard for following vehicles
Electrical Fire Under Hood
Battery light illuminated while driving on a freeway. Power steering became heavy, all warning lights on dash flickered, and thick smoke filled the passenger compartment. Vehicle caught fire under the hood and became a total loss. This represents a critical safety hazard.
When: 01/07/2016; no mileage reported at time of failure
Symptoms owners cite: Battery light illuminated; Power steering became heavy; All warning lights flickered; Smoke filled passenger compartment rapidly; Vehicle ignited under hood
Repairs/costs cited: Vehicle was total loss; no repair performed.
Multiple Warning Lights and Check Engine Light at Low Mileage
At 100 miles, check engine and ABS lights illuminated while driving in snowy conditions. Dealer diagnosed need to replace battery, starter, cable, and ECM. At 50,000 miles, airbag warning light and radio failure occurred; manufacturer confirmed VIN was not part of a steering recall (10V283000).
When: At approximately 100 miles (battery/starter/ECM case); at 50,000 miles (airbag/radio case)
Symptoms owners cite: Check engine light illuminated; ABS light illuminated; Airbag warning light illuminated; Radio becomes inoperable
Codes mentioned: Oil control valve (OCV) code detected but no fault found upon inspection
Repairs/costs cited: One case required battery, starter, cable, and ECM replacement at 100 miles.
Recalls/TSBs owners mention: Manufacturer confirmed VIN not included in NHTSA campaign 10V283000 (steering).
Steering Wheel Radio Controls Intermittent Failure
Radio controls on the left side of the steering wheel stop functioning intermittently. Owner notes symptoms similar to steering column electrical roll connection recall (Subaru Recall WVR-28), which applied to 2010 model year vehicles, not the 2011.
When: Within 2.5 months of ownership
Symptoms owners cite: Radio controls on steering wheel become inoperative intermittently; Issue occurs on multiple occasions
Repairs/costs cited: One service advisor mentioned repair would cost approximately $300 for audio switch replacement.
Recalls/TSBs owners mention: WVR-28 recall issued for 2010 MY; 2011 MY owner not covered.
Parking Brake and Brake Light Malfunctions in Wet Conditions
Brake light flashes when undercarriage gets wet from rain. Parking brake light cannot be turned on during rain. One owner waiting for remedy under Recall WTV81 (10-12 LEG&OUT EPB ACTR ASSY REPLACE), which had no remedy available as of the report date.
When: When vehicle is wet from rain
Symptoms owners cite: Brake light flashes continuously when vehicle is wet; Parking brake light remains on and flashes; Parking brake cannot be activated in rain; Moisture appears to trigger malfunction
Recalls/TSBs owners mention: Recall WTV81 issued (electric parking brake actuator assembly replacement) but remedy not yet available at time of complaint.
Loss of Audio and Secondary Electrical Components
Steering wheel audio controls, clock, saved radio station memory, and seat warmer fuses fail. One owner's seat warmer fuse blew, was replaced, then blew again; dealer recommended $440+ heater module replacement. Another reported steering wheel audio controls failing and requiring $300+ audio switch replacement. These failures suggest systemic electrical issues beyond individual component defects.
When: No specific mileage; one case at 16,000 miles with multiple concurrent issues
Symptoms owners cite: Steering wheel audio controls stop functioning; Clock loses power; Saved radio station memory erased; Seat warmer fuse repeatedly blows after replacement; Tail lights go out intermittently
Repairs/costs cited: Seat warmer fuse replacement; heater module replacement estimated $440+. Steering wheel audio switch replacement estimated $300+.
Unexpected Engine Stall While Driving
Engine cuts off unexpectedly during normal driving, particularly during deceleration or slowing. One owner reports this has been a problem since day one of ownership, suggesting a design or assembly defect rather than wear. Another owner reports stalling at stops without full engine shutdown.
When: Since new (one owner reports); no specific mileage range noted for others
Symptoms owners cite: Engine turns off unexpectedly while driving; Occurs especially when slowing down; Vehicle stalls at stops but does not completely shut down in one case; Stalling recurs multiple times
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Tl*the contact owns a 2011 Subaru legacy. The contact stated that while driving approximately 25 MPH in snowy conditions, she noticed the check engine and ABS lights illuminated on the instrumental panel. The vehicle was inspected by a dealer who informed the contact that she needed to replace battery, the starter, the cable and the ECM. The vehicle was repaired. The failure mileage was…
Vehicle was stopped at a red light. Upon light acceleration, check engine light came on (and stayed on), parking brake light began to blink, cruise control indicator began to blink, and traction control light came on and stayed on. Driver did not detect any slippage. Authorized Subaru dealer found no problem with oil control valve (ocv) despite computer code indicating potential problem with…
Had electrical trouble with your 2011 Subaru Legacy?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2011 Subaru Legacy?
It's a meaningful issue. 15 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 13 complaints that reported odometer mileage, most electrical failures cluster between 50,000 and 110,000 miles, with the median around 82,600. A quarter of owners report trouble before 50,000; a quarter make it past 110,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/Subaru/Legacy.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.