2018 Subaru Forester electrical system problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 17, 2026TXElectrical SystemEngineSteering

   On July 31, 2026, I was driving with my daughter when the a/c compressor clutch seized up and experienced a catastrophic compressor failure that also blew out the expansion valve o-rings. The failure led to a total loss of engine power and control of the vehicle. The car would not start back up because the clutch was seized and the pulleys wouldn’t turn. Luckily, I was in a residential neighborhood and cars were able to safely go around me. If this had happened on a highway…

   NHTSA complaint #11764982 · source
2. Filed Aug 18, 2026NCAirbagsElectrical SystemSeats & Seat Belts

   Airbag light came on - dealership confirmed it is an occupant detection system failure - wiring harness has gone bad. No history of moisture exposure, which would leave faulty part as the problem. Similar to Subaru recall from 2020 on heated passenger seats - this vehicle was not included in that recall, but is in the same year range and has heated seats. Entire bottom piece of front seat must be replaced, including wiring harness and seat mounting bracket; otherwise air…

   NHTSA complaint #11757637 · source
3. Filed Jul 19, 2026OHAirbagsElectrical SystemSeats & Seat Belts

   I brought my vehicle to an authorized Subaru dealership (Byers Imports, LLC in Columbus, Ohio) to diagnose the reason for the airbag warning lamp illuminating. The dealer had the manufacturer's WUM-98 Safety Recall (NHTSA Campaign Number 19V701000) performed to remedy a defective Occupant Detection System (ODS) sensor harness.Despite the recall remedy being completed, the Supplemental Restraint System (SRS) airbag warning light re-illuminated on the dashboard, completely…

   NHTSA complaint #11751355 · source
4. Filed May 11, 2026CAElectrical System

   June 2025: I proactively replaced the battery October 2025: Left the car parked for 17 days. Dead battery. Got a jump, drove for 2 hours. May 2026: Left the car parked for 10 days. Dead battery. Got a jump, drove to mechanic who replaced it under warranty. Saw article about Subaru class action lawsuit about this issue, so I'm reporting it. I will visit the Subaru dealer where I purchased to car and ask them about it and Subaru's plans for permanent repair.

   NHTSA complaint #11737089 · source
5. Filed Mar 13, 2026CAAirbagsElectrical SystemOther / Unknown

   Airbag light comes on due to some failure in the passenger seat. This vehicle year has had a recall on the same issue but this VIN number was not included for some reason. Another consumer posted his assessment which I have attached. My vehicle falls under his category. He has sold his since his was never resolved.

   NHTSA complaint #11724224 · source
6. Filed Feb 3, 2026WAElectrical System

   The defect presents itself when the equipped data communications module (DCM) attempts to communicate with 3G cellular networks. As 3G networks within the U.S. are no longer functioning, the call will continuously fail even after the vehicle has been turned off, draining the battery and resulting in a no-start safety risk for drivers but in order to replace the DCM to the 4G it will cost upwards of $2000.

   NHTSA complaint #11715383 · source
7. Filed Nov 1, 2025IDElectrical System

   The defect presents itself when the equipped data communications module (DCM) attempts to communicate with 3G cellular networks. As 3G networks within the U.S. are no longer functioning, the call will continuously fail even after the vehicle has been turned off, draining the battery and resulting in a no-start safety risk for drivers. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint #11696973 · source
8. Filed Jun 20, 2025MTElectrical SystemEngineFuel, Hybrid & EV Propulsion

   Yesterday 6/19/25 I was driving out the driveway when the vehicle accelerated on its own, and not slowly, but like it had been punched. I was actually coasting at the time since I didn't want to stir up dust. My foot was not on the gas pedal. And it was not the floor mat. It happened on its own, the first time in 87,000 miles. It probably cannot easily be replicated as it was completely random, although now that it's happened once, it very well could happen again if there's…

   NHTSA complaint #11668212 · source
9. Filed Apr 11, 2025DCElectrical SystemOther / Unknown

   I’ve experienced recurrent failures with my Subaru’s AC system, and it’s become more than just an inconvenience—it’s a real safety concern. In hot weather, the cabin can become unbearably warm, making it difficult to concentrate and increasing the risk of fatigue or even heat-related illness, especially for passengers who are older, very young, or have medical conditions. What’s even more frustrating is the poor quality of the system and Subaru’s lack of communication about…

   NHTSA complaint #11654131 · source
10. Filed Aug 18, 2024VTElectrical SystemOther / Unknown

    I bought the car certified used from a Grand Prix Subaru in Hicksville, NY. They did not mention this issue. I’ve had the car for 2 years, drive it 1-2x a week, have it serviced regularly, etc. all of a sudden in the past week it’s needed a jump 2x, maybe a few days apart. My lights are on auto, always, & shut off when the car turns off after a few seconds. My interior lights are all set to off, after the first jump. Doors & cargo door are all closed well. Battery has been…

    NHTSA complaint #11609276 · source
11. Filed Aug 9, 2024VAAirbagsElectrical SystemSeats & Seat Belts

    My 2018 Subaru Forester has a faulty passenger air bag sensor, which has been diagnosed by my local Subaru dealer, with a repair cost of $1,500+ for labor and parts. It has intermittently turned on and off again, but after getting a separate issue fixed by my dealer, they diagnosed this problem, and every time the car is turned on, the warning light is constantly displayed, and the passenger seat airbag light shows "OFF" even when someone is in the passenger seat. Upon…

    NHTSA complaint #11607542 · source
12. Filed Jul 6, 2024FLDriver Assistance & Safety TechElectrical SystemSteering

    Starting up the car in the morning after a long day stuck in traffic (over 100 degree F weather), moved about 5 feet then the eyesight system stopped working, rear braking stopped, and power steering gave out - the car started and the engine ran normally. The car was abandoned as unsafe until diagnostics could be performed and a different car was used to get around . That evening the car started up fine, also the next morning to reproduce conditions. Tested the battery,…

    NHTSA complaint #11599518 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology