I bought the car and less than a month later the engine light came on. I took it into the dealership that I bought it from and they told me to take it to the Subaru dealership if the engine light came back on. It never came back on. Four days later I was driving and the gas pedal quit working. I looked down to see if any lights were on and they weren't. I pulled over to the side of the highway to…
2015 Subaru Forester electrical problems
moderate 74 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
When does it fail?
Of the 74 electrical complaints filed for the 2015 Subaru Forester, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
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.
Owners have filed 74 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
No new NHTSA electrical complaint has been filed on this vehicle in over 8 years — the issue may be aging out of the active population.
The failure pattern owners describe
The 2015 Forester electrical system fails in several distinct ways. Battery drain is the most common complaint—vehicles sitting unused for a few days or weeks develop dead batteries, despite the battery testing good. One owner parked for less than 30 minutes and found the car wouldn't start; another got stranded twice on I-95 when the car shut down mid-highway with fuel showing adequate range, then wouldn't restart for 45 minutes. Owners report replacing the battery multiple times (up to four replacements in some cases) with no root cause found.
Warning light clusters appear without clear trigger: ESC, ABS, hill assist, and lane departure lights illuminate together, sometimes causing the transmission to stick in park and prevent shifting. One owner experienced automatic braking at highway speed with non-responsive brakes afterward. Another's engine shut down while driving, then wouldn't start.
Horn failures tied to faulty steering roll connectors are documented, along with fuse-related issues—one owner's #8 backup fuse mysteriously went missing after horn diagnostics, killing radio and door locks. Fuel gauge malfunctions persist: false low-fuel warnings, blank gauges after restart, and fuel pump failures. A few owners report water intrusion into the electronics box from roof drain clogs, killing door locks and TPMS.
Less common but serious: one vehicle caught fire at the engine bay on a city street; another's door mirror smoked after hand washing. An owner became trapped inside when the battery died and electronic locks failed. Key-in-ignition sticking and dome light drain issues surface sporadically.
Same Subaru Forester electrical reports on nearby years: 2014 · 2016 · 2017 · 2018
Failure modes owners describe
Battery drain and repeated failure
Battery completely discharges when vehicle sits unused for few days to two weeks, despite testing as healthy. Owners report replacing batteries multiple times with no permanent fix. Electronics drain power even with engine off.
When: 30,000–65,000 miles; one case at 50,283 and 57,335 miles with second replacement shortly after first
Symptoms owners cite: car won't start after short parking (under 30 minutes to few days); battery drains completely when parked; interior lights dim or flicker before complete drain; rapid drain from interior accessories even with engine off
Repairs/costs cited: Battery replaced multiple times (2–4 replacements per owner). Trickle charger or portable jumper recommended by dealer as workaround. One owner paid for second battery within 5 months of first replacement.
Recalls/TSBs owners mention: Dealer acknowledged this is 'not uncommon in 2015 cars with full complement of features.' No TSB or recall identified. Subaru suggested trickle charger and sent $100 loyalty credit in one case.
Fuel gauge and fuel system malfunction
Fuel gauge shows false low-fuel warnings, goes blank, or shows inaccurate remaining range, sometimes causing engine shutdown on highway. One owner reported car shutting down mid-I-80 with fuel gauge showing 60 miles remaining but car out of fuel; another died on I-95 twice with fuel showing 30 miles to empty.
When: 27,000–92,000 miles; incidents occur on highway after extended driving
Symptoms owners cite: fuel gauge displays blank or incorrect reading; false low-fuel warning when adequate fuel present; engine dies mid-highway with fuel indicator showing range remaining; car won't restart after fuel-related shutdown
Repairs/costs cited: Fuel pump replaced in at least one case (no permanent fix reported). One owner had to manually add 3.5 gallons roadside to restart. Fuel sensor and cluster replacements attempted in another vehicle without resolving issue.
Recalls/TSBs owners mention: Referred owner to dealer for diagnostic. No TSB or recall mentioned. One owner noted 'fuel lines resemble plastic drinking straws' and vulnerable to rodent damage, but this is separate from gauge malfunction.
Steering roll connector (SRC) horn failure
Horn stops working suddenly without warning. Steering roll connector is the identified root cause. Safety risk because horn is unavailable when needed. One owner nearly hit another vehicle when horn failed to function.
When: 55,000–79,000 miles; failure is abrupt with no prior warning
Symptoms owners cite: horn inoperative on steering wheel; panic button on key fob horn may still work; no warning lights or messages before failure
Repairs/costs cited: Steering roll connector replacement required. Cost is high (one owner noted 'very expensive basic safety component'). Repair typically $500–$1,000+ based on context.
Recalls/TSBs owners mention: Subaru replaced SRC under warranty in one case and offered goodwill assistance to another (vehicle was 8 years 8 months old, just out of warranty). Subaru recalled tens of thousands of 2010 models for SRC failure; 2015 models not included in earlier recall despite same symptoms.
Multiple warning lights and transmission stuck in park
Clusters of warning lights (ESC, ABS, hill assist, lane departure, check engine) illuminate simultaneously, often causing transmission to lock in park and refuse to shift. Vehicle may also exhibit rough idling, jerking, or stumbling. Lights may clear after restart but recur.
When: Occurs during driving and at startup; one case at 27,000 miles; another after battery jump
Symptoms owners cite: all safety-related dashboard lights illuminate together; transmission stuck in park, cannot shift into gear; engine rough idle, jerking, stumbling, revving; engine stalls in extreme cases; lights clear temporarily after restart
Codes mentioned: B1500
Repairs/costs cited: Diagnostics charge $149–$500 with no consistent fix identified. One dealer mentioned possible wire harness issue but was unsure. Transmission cluster replacement attempted in one case without success. Brake light sensor replacement mentioned as possible fix in one case.
Recalls/TSBs owners mention: Dealer unable to duplicate issue in some cases. Mechanic notice issued advising awareness of alternator problems. One owner offered blue book repurchase plus $400 when vehicle could not be fixed.
Brake light switch/sensor failure causing all warning lights and braking anomalies
Brake light switch or sensor failure causes all warning lights to illuminate. Vehicle may apply brakes automatically while driving or lose brake function when lights are on. This is described as a 'known issue' by Subaru staff to at least one owner. Safety critical because brake lights don't illuminate for following traffic, and brake function is compromised.
When: Intermittent; one case noted as 'clearly a known issue' per Subaru phone support
Symptoms owners cite: all safety warning lights illuminate (ESC, ABS, hill assist, lane departure); brake lights not illuminated during braking (reported by following driver); automatic braking application at highway speed; loss of brake response when lights are on; transmission unable to shift out of park
Repairs/costs cited: Brake light switch replacement suggested. Diagnostic cost $170 out of warranty. One owner stated Subaru 'clearly knows what the issue is' and refused to diagnose after acknowledging it as known problem.
Recalls/TSBs owners mention: Subaru acknowledged this as a 'known issue' to at least one owner via phone support. No recall issued. Charged owner $170 diagnostic fee despite known problem.
EyeSight system malfunction
EyeSight adaptive cruise control and lane-keeping system turns itself on and off repeatedly (approximately 3 times per hour), causing vehicle to slow unexpectedly without brake light activation. Windshield replacement was required and did not resolve issue. System cannot be manually reactivated without engine restart.
When: Within one hour of purchase; persists across multiple repairs
Symptoms owners cite: EyeSight system cycles on/off repeatedly; vehicle slows without brake lights illuminating when system deactivates; system cannot be reactivated by driver without restart; requires engine shutdown and restart to regain function
Repairs/costs cited: Two dealers made 'repeated attempts' to fix. Windshield replacement required and performed ($cost not stated). System still malfunctions. No permanent repair found.
Recalls/TSBs owners mention: Subaru headquarters forced owner to pay for windshield replacement, claiming customer caused nick. EyeSight system remained non-functional after replacement. Complaint suggests Subaru is unable to fix and should remove system from market.
Water intrusion from sunroof drain, destroying electronics module
Sunroof drains clog in heavy rain, causing water to leak into the rear of the vehicle's roof and into the electronics control box. Electronics module failure triggers loss of remote lock functions, TPMS, and other controls, requiring $500+ replacement.
When: Occurs during/after heavy rain; long-term design defect
Symptoms owners cite: water drips into rear interior during heavy rain; electronics box becomes wet and fails; remote key locks stop working; TPMS system stops functioning; other electronic controls lose function
Repairs/costs cited: Electronics box replacement cost $500+. Sunroof drain must be professionally unclogged. Owner believes Subaru should reimburse for preventable damage.
Recalls/TSBs owners mention: No response documented. Described as design flaw by owner.
Engine fire at engine bay during city driving
Vehicle caught fire at the front passenger-side engine bay on city street. Check engine light came on during driving, gas pedal became unresponsive, flames emerged from hood near lights, and entire front end ignited within minutes.
When: Within first month of purchase; approximately 4 days after purchase
Symptoms owners cite: check engine light illumination; gas pedal loss of response; flames from front passenger hood area near lights; rapid spread to entire front end
Repairs/costs cited: Not repaired (vehicle destroyed by fire).
Recalls/TSBs owners mention: No response documented.
Door mirror electrical failure and smoke after hand washing
Vehicle's driver-side door mirror produced smoke for 30–40 seconds after hand washing with garden hose (no pressure nozzle). Water likely entered electrical components. Smoke stopped but subsequent electrical failures occurred.
When: Immediately after hand wash at car wash bay; 15,850 miles on vehicle
Symptoms owners cite: smoke from driver mirror; key fob door lock/unlock failure; dome lights inoperative; clock inoperative; TPMS inoperative; panic horn beeps when unlocking with key; manual door lock works (driver side only)
Repairs/costs cited: Not repaired. Owner located similar incidents online and referenced prior Subaru recall (630,000 vehicles) for same issue, though 2015 model was not recalled.
Recalls/TSBs owners mention: No response documented. Owner noted 2015 Forester excluded from prior recall despite same symptoms.
Accelerator pedal becomes unresponsive during driving
Accelerator pedal stops responding to depression while driving. Vehicle will not accelerate when driver presses pedal. Issue resolves after pulling over and stopping for 3–5 seconds, then resuming. Occurred twice in 24 hours.
When: During normal city/highway driving
Symptoms owners cite: accelerator pedal depression produces no engine response; vehicle decelerates despite pedal input; issue resolves after pulling over and brief stop
Repairs/costs cited: No repair documented.
Recalls/TSBs owners mention: No response documented.
Multiple electrical system failures (wipers, heater fan, turn signals)
Several electrical systems fail simultaneously—wipers, windshield washer, heater fan, and turn signals all stop working at once during driving. Restarting the engine restores all function.
When: During normal driving at 35 mph
Symptoms owners cite: wipers inoperative; windshield washer inoperative; heater fan inoperative; turn signals inoperative; all restore after engine restart
Repairs/costs cited: Scheduled for warranty service.
Recalls/TSBs owners mention: No response documented.
Fuse displacement and secondary electrical failure
Backup fuse (#8) mysteriously went missing from fuse box after horn diagnostics. Owner checked only horn and radio fuses and did not remove it. Missing fuse caused radio, clock, and door lock remote features to fail. Fuse was not in the box when checked. Subaru service blamed owner for misplacing fuse despite no evidence.
When: Approximately 55,000 miles after initial horn failure
Symptoms owners cite: horn failure (SRC-related); radio inoperative; clock inoperative; door lock remote inoperative; backup fuse #8 missing from fuse box
Repairs/costs cited: Steering roll connector replaced (fixing horn). Subaru service blamed customer for fuse displacement and claimed no one else had access to vehicle.
Recalls/TSBs owners mention: Subaru service blamed customer without evidence. Owner suspects SRC fault extends beyond horn to other steering wheel-connected systems (radio volume/tuning, remote horn via fob).
Passenger airbag sensor failure
Front passenger airbag sensor malfunction causes airbag to turn off. Vehicle equipped with heated seats matches recall criteria but VIN not included in recall system. Same symptoms as recalled vehicles. Owner paid $1,500 for repair in 2020; same failure recurred 2 years later. Second failure quoted at up to $2,000.
When: First failure ~60,000 miles (January 2020); recurrence at ~72,000 miles (2022)
Symptoms owners cite: instrument panel shows 'airbag off'; driver-side warning assistance sensors stop working; same symptoms as recalled 2015–2018 Foresters with heated seats
Repairs/costs cited: Airbag sensor/unit replacement $1,500 (2020). Second failure quoted $1,000+ with no firm estimate. Owner had to pay out of pocket both times despite recall existing for identical vehicles.
Recalls/TSBs owners mention: Vehicle excluded from official recall despite matching recall criteria (2015 Forester with heated seats). Manufacturer unable to include vehicle in recall matching system. Refused free repair; offered partial payment accommodation for second failure.
Door latch electrical malfunction preventing door opening
Driver's side door cannot be opened using the interior silver door handle when car is parked and engine off. Door also won't respond to unlock rocker switch. Door only opens when using the black in-door locking latch (mechanical override). This is described as potential trap hazard.
When: Intermittent electrical malfunction
Symptoms owners cite: driver door stays locked despite silver handle pull; unlock rocker switch does not respond; mechanical latch override is only method to open door; potential for driver entrapment
Repairs/costs cited: No repair documented.
Recalls/TSBs owners mention: No response documented.
Door lock trap hazard from battery depletion
When battery completely dies while owner is in vehicle using accessories to charge phone, electronic door locks fail and owner becomes trapped inside. Key fob inoperative. Doors eventually unlock after battery fully depletes (after approximately 3 minutes in this case), but only by chance. In cold weather or without cell phone, this could be life-threatening.
When: When battery fully depleted due to accessory drain
Symptoms owners cite: electronic locks do not respond when battery dead; key fob does not work; doors eventually unlock after complete battery drain; potential entrapment if delay is longer
Repairs/costs cited: No repair documented. Design allows door locks to fail when power lost.
Recalls/TSBs owners mention: No response documented.
Instrument cluster and speedometer visibility issues
Speedometer is located under a sun visor, limiting light. Instrument panel lacks backlighting in daylight driving conditions, making speedometer and other gauges difficult or impossible to read during normal daytime driving. Issue is described as 'universal problem' by dealer staff—multiple customers complained. Subaru stated no solution available.
When: Daytime driving conditions; apparent from new
Symptoms owners cite: speedometer not visible in daylight; cannot determine vehicle speed safely; instrument panel lighting inadequate; cluster gauges unreadable
Repairs/costs cited: No repair available. Dealer stated this is 'standard for those models.'
Recalls/TSBs owners mention: Subaru told owner they have no solution. Dealer confirmed this is widespread complaint from multiple customers but standard design.
Backup camera display unusable with polarized sunglasses
Backup camera display shows solid black vertical bar down the center when driver wears polarized sunglasses, obscuring critical portions of the camera view. Owner nearly backed over pedestrians in parking lots because obscured area was not visible. Other manufacturers (Toyota, BMW) and other Subaru models (Outback) do not have this problem. Subaru's solution is for owner not to wear polarized sunglasses—impractical since most corrective lenses are now polarized.
When: Ongoing when wearing polarized sunglasses
Symptoms owners cite: backup camera display shows black vertical bar in center; obscures left and right portions of view; nearly caused collision with pedestrians; problem does not occur on other brands or Subaru models; problem is design flaw, not user error
Repairs/costs cited: No repair offered. Subaru suggested owner change eyewear.
Recalls/TSBs owners mention: Subaru's response: do not wear polarized sunglasses. Owner notes this is impractical as most corrective sunglasses are polarized, and other manufacturers solved this.
Engine shudder and power loss when ascending grades
Engine suddenly revs and vehicle loses power while ascending small grade incline at highway speed. Vehicle feels as though brakes are applied. Hill descent control light illuminates. After turning off engine and restarting, issue resolved temporarily—same problem recurred 30 minutes later.
When: After 2 hours of highway driving at 75 mph; vehicle at normal operational temperature with 1/4 tank fuel
Symptoms owners cite: engine revving during ascent; sudden power loss on grade; sensation of braking; hill descent control light illuminates; issue recurs after restart
Repairs/costs cited: Engine appeared normal upon visual inspection. Scheduled for service within 500 miles.
Recalls/TSBs owners mention: No response documented.
Brake light switch failure causing inconsistent brake light illumination
Brake lights do not illuminate consistently or at all during braking. Following drivers report seeing lights flicker or not light up, causing them to pull over the driver to report the lights are broken. Owner discovered recall notice for brake lights was never sent by Subaru.
When: Ongoing intermittent issue
Symptoms owners cite: brake lights do not illuminate reliably when braking; brake lights flicker or turn off intermittently; following drivers cannot see braking indication; safety hazard for following traffic
Repairs/costs cited: Owner discovered recall for brake lights but was never notified by Subaru.
Recalls/TSBs owners mention: Recall issued but owner was not notified. No proactive outreach documented.
Key stuck in ignition
Key becomes stuck in ignition after turning off engine. Car starts and runs normally, but key cannot be removed. Sometimes requires multiple attempts—turning engine back on and pulling key while turning off—before key releases. Issue is intermittent.
When: Intermittent; occurs after engine shutdown
Symptoms owners cite: key will not turn fully to remove position; requires engine restart to release key; intermittent—may go days without issue then occur multiple times in succession
Repairs/costs cited: No repair documented.
Recalls/TSBs owners mention: No response documented.
Oil consumption
Engine burns excessive oil. Oil level drops approximately one quart between oil changes. Not directly electrical, but reported in same complaint that included battery drain and multiple warning lights.
When: From purchase at 56,000 miles onward
Symptoms owners cite: computer indicates low oil level; dip stick confirms approximately 1 quart low between changes; excessive oil burn requiring frequent top-ups
Repairs/costs cited: Owner kept 5-gallon oil container in car for frequent top-ups. No repair attempted or offered.
Recalls/TSBs owners mention: No response documented.
Alternator failure
Alternator failure causes check engine light and rough idle. Subaru issued mechanic notice alerting shops to watch for alternator problems on this model. Repair cost $877.53.
When: During city driving
Symptoms owners cite: check engine light illumination; rough engine idle; charging system failure
Repairs/costs cited: Alternator replacement $877.53. Owner's mechanic suggested this may become a recall and advised keeping receipt.
Recalls/TSBs owners mention: Subaru issued mechanic notice acknowledging alternator problems exist.
TPMS and remote key system malfunction
TPMS (tire pressure monitoring system) lights stay on continuously despite tire pressure being correct. Remote key arming fails intermittently. Alarm sounds when using key to open door and turning off ignition. Battery replaced but issue persists. Diagnostic code B1500 associated.
When: Code B1500 received week of November 11, 2024
Symptoms owners cite: TPMS light on continuously; tire pressures normal; remote key cannot arm/disarm reliably; alarm sounds when using key to unlock and shut off ignition; manual arming works sometimes
Codes mentioned: B1500
Repairs/costs cited: Battery replaced; issue persists.
Recalls/TSBs owners mention: No response documented. Dealer appointment scheduled December 5.
Power window malfunction
Driver-side power window operates intermittently. Auto-down feature does not work. Window rises in 2-inch increments, taking extended time to fully close. One instance described window grinding when attempting to start car.
When: Intermittent failures
Symptoms owners cite: auto-down feature inoperative; window moves in 2-inch increments; slow operation; grinding noise in one case when starting engine
Repairs/costs cited: Window function noted but not repaired in most complaints.
Recalls/TSBs owners mention: No response documented.
AC condenser/clutch wiring failure
Air conditioning condenser does not operate properly due to wiring problem in the clutch assembly. Compressor cycles on and off; cool air only sometimes. Subaru has acknowledged this is a known design defect (per NHTSA ID 10120975) and corrected it in later production, but owners with defective units must pay for expensive repair.
When: Unknown production window; affects vehicles before certain date
Symptoms owners cite: AC blows cool air only intermittently; condenser does not operate consistently; compressor cycles on/off
Repairs/costs cited: Expensive condenser repair required. No coverage offered despite manufacturer acknowledgment.
Recalls/TSBs owners mention: Subaru acknowledged the wiring defect exists and corrected it in later models. No recall or warranty extension offered to affected owners. NHTSA ID 10120975.
Fuel pump failure with engine shutdown
Engine shuts down multiple times during highway driving. Fuel pump replaced, but shutdown recurs with fuel gauge also failing. Four separate shutdowns reported.
When: Multiple incidents at various mileages
Symptoms owners cite: engine shuts down while driving on expressway; vehicle cannot restart or takes extended time to restart; fuel gauge goes blank or shows incorrect reading
Repairs/costs cited: Fuel pump replaced. Gauge replaced. Instrument cluster replaced. Issue recurs.
Recalls/TSBs owners mention: Multiple repair attempts; manufacturer unable to resolve.
Gear shift stuck in park with electrical fault
Transmission cannot shift out of park due to electrical failure of shift interlock. Occurs when multiple warning lights illuminate simultaneously. Manual override required to release shift.
When: When warning light cluster appears
Symptoms owners cite: transmission locked in park; shift button does not respond; manual override required to move shifter
Repairs/costs cited: Requires electrical diagnostics; manual override used as temporary solution.
Recalls/TSBs owners mention: No response documented.
Rodent damage to wiring and fuel lines (soy-based plastic)
Rats chew through fuel lines and wiring harness repeatedly. Fuel lines made of thin plastic (described as 'drinking straws') are much more vulnerable than older steel-belted cable designs. Wiring harness damaged multiple times. Owner replaced fuel lines 3 times and wiring harness 2 times in less than a decade. Rats nested in driver door hinge. Owner believes soy-based plastic in modern vehicles (post-2012) is the root cause.
When: Ongoing from 2015 to present (10+ years)
Symptoms owners cite: fuel leaks from chewed fuel lines; electrical shorts from chewed wiring harness; evidence of rat nesting in door hinges and engine bay
Repairs/costs cited: Fuel lines replaced 3 times. Wiring harness replaced 2 times. Owner deployed rat traps, capsaicin-soaked tape ($40–50 per roll), and coyote urine spray. No permanent solution.
Recalls/TSBs owners mention: No response documented. Owner notes Honda developed rat-repellent tape (capsaicin) but vehicle owners must pay for protective measures. Owner believes Subaru should reimburse for damage caused by material choice.
Synthesized from 74 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
Tl* the contact owns a 2015 Subaru forester. The contact stated that the instrument panel showed that the front passenger's air bag was off. The contact became aware that other Subaru vehicles with heated seats were known to experience the failure. The contact called Subaru of morristown (175 ridgedale ave, morristown, nj 07960; (866) 910-3466) and was referred to the manufacturer for assistance.…
I have had to replace my battery about every 16 months. Seems like something is draining the battery prematurely. I shouldn't have to keep buying new batteries every year.
The car lost all power in the middle of interstate 95 heading south approx 17 miles north of the ga fl state line. The fuel indicator showed 30 miles until I had to refuel. This was on 12/3/2017. I was at speed(75 MPH) and managed to go through traffic and go to shoulder. There was no power and the engine had quit. I waited a couple of minutes and the car restarted. I drove to the second…
Common questions
How serious is the electrical problem on the 2015 Subaru Forester?
It's a documented issue but not catastrophic. 74 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Across the 41 complaints that reported odometer mileage, most electrical failures cluster between 25,000 and 56,400 miles, with the median around 42,206. A quarter of owners report trouble before 25,000; a quarter make it past 56,400. 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.