2020 Subaru Outback: won't start

Filed Jul 13, 2025 · Electrical, Engine · AZ

Car stalled in traffic. The engine was cranking but it would not start. Had AAA tow off the road and to my home. Car sat for 10 days waiting for a fuel pump (thought this was the problem). After sitting for 10 days the battery was totally dead! New fuel pump installed battery was jumped but could not start the car. After 2 hours on the charger the battery still did not have enough energy to turn over the engine. Car is in a certified service shop (Wilhelm). Battery replaced and same starting issues with the new battery and the new battery is discharging at a very high rate even though the car is not starting. Bought the car used in 2023 so I have no knowledge of the history of the car. Service provider running factory diagnostic testing but so far no determination as to cause of the high rate of discharge. Verified that the fuel pump is fully operational. What we know is that with a fresh fully charged battery and a working fuel pump the car will not start and remain running. The engine stops and the battery drain is excessive.

Filed Feb 24, 2024 · Electrical · WA

The NEW car battery was replaced by seller early in the first year. The car would not start after stopping. Now the same again dead battery symptom reappears. Upon trying to start, the electrical system will not shut off at this time and will drain the battery down yet further. After stopping the car it will not start without fully recharging. Early on, once the car stopped running while I was in gear driving down the road. Though it did restart this time. I have been unable to disable the engine from stopping at stop signs which is a BIG concern. The last few recharges have only lasted days. I'd say the battery is now gone. And now also, when the battery is charged, the rear hatch will not open. This is a big concern. Dependent upon who you talk to at the Subaru Dealers, you will get numerous answers for this concerns. Buy another car? As to the rear hatch, the Manual shows I can just pull a cord on the inside. None can be found.

Filed Aug 5, 2023 · Driver assistance, Electrical · TX

I purchased the lease for the vehicle in January 2020. I first notified Subaru in Austin of an obvious "glitch" with the computer operating system in April 2020. The "glitchy" OS challenges came and went, I would notify Subaru and they would remedy the issue with a "patch" update at the service center. On April 29 2022 a clear night and a suitably clean vehicle, the RAB system completely failed to recognize/notify/respond to a mailbox behind me, upon impact the mailbox broke the rear windshield. on June 28 2022 the vehicle fails to start, and is "surging" completely draining a new jumper box, and then promptly burning it out, the box will no longer operate. Put in a new battery(#1), make an appointment for service on the vehicle. The dealership replaces the battery(#2), computer updates are completed. Vehicle goes to the body shop for the rest of the work to be completed. 28 days later, I arrive to pick up my vehicle, all work is complete. However the vehicle will not start (again) Auto body shop replaces the battery(#3).on 9/23/2022 after dark, my Subaru Outback 2020 Limited, stops and puts its Parking break on., all dials spike, then dies, rear hatch signal goes off continuously, regardless of its actual state of open/close. The vehicle refuses to jump with a new jumper box. Outback 2020 is successfully jumped by a newer vehic. New battery installed(#4). 9/29/2022 another appointment at Subaru service center to look at my vehicle, they swap out the battery(#5) and update computer. Upon pickup vehicle is without trailer lights, 3 airbag lights on, ABS light on/off. 10/17/2022 appointment at a different service center for an Oil change service, 10/18/2022 diagnostic check appt, 3 blown fuses found. 11/16/2022 Austin service, found many lost comm. codes.- reprograms , engine control module. Outback 2020 intermittently has problems opening and closing hatch/windows, display loading issues, many warning/hazzard lights & signals on/off (from April 2022- present day.)

Filed Dec 10, 2022 · Driver assistance, Electrical · CA

Electrical problems cause frequent battery replacement and for the battery to drain at an alarming rate. The car has to be jump-started to be used, and the car battery will drain immediately as soon as the drive is over( even if it's hours). There is/was a class action lawsuit against Subaru of America, as the action says that Subaru failed to recall the vehicles and fix the problem. I'm paying a note on a 28k car that I can't get out of the driveway without jump-starting the car, and if I stop to run in a store when I return, the vehicle will not start. It's completely unsafe and ridiculous. I've taken this to the dealership (Ken Fowler of Ukiah, CA) and other mechanics, and no one has known about this issue or been able to fix it. Someone, please help.

Filed Nov 12, 2022 · Electrical · NC

The vehicle does not start at unforeseen times. Battery has been replaced. Safety is a risk if car would not start in unsafe location. Dealership has been unable to fix problem or find drain on battery or electrical problems. Car has had to be towed to dealership and jump started by a professional many times in order to drive to dealership.

Filed Sep 15, 2022 · Electrical · CA

I purchased an Subaru Outback touring edition, with a turbo 4 cylinder engine, on February 8, 2020. My battery failed in 3/20, on 4/15/20 Diablo Subaru of Walnut Creek replaced the dead battery. In March of 2022 my battery died again. I was told the rear cargo light had been left on and that drained the battery. They recharged the battery and said the battery was good. After this event I bought a small battery operated jump starter to keep in my car. We went on vacation for 2 weeks, August 24, through September 7, 2022. The first time I tried to start my car it would not start. I turned of the climate control the radio and the infotainment screen and verified that none of the interior lights were on before turning the engine off. When I returned to the car it started reluctantly. Before exiting my car at home I again made sure that the climate control, radio, and infotainment screen and all lights were off, before turning the engine off. The next day it didn't start. I jumped it again then ran one errand and it reluctantly started, at home I left the car running before my next appt.. I returned to the car after the appt. and the car would not start. I jumped it again and drove home. I left it running for one hour at home, and went through my routine insuring everything was off. The next day it didn't start. Other electrical problems happen intermittently since buying the car. Periodically the infotainment system touchscreen will not respond to touch. or the screen goes blank and unresponsive. It may come back on in a few minutes, or I may need to leave the car off for one or more hours for the screen to come on. I complained to the dealer in 2/21. The dealer reprogrammed the "CPI". This didn't resolve the problem. I took it back 5/11/21 with no resolution. Since 3/16/22 there have been random electrical problems; warnings that ABS is off; Airbags are off; warning to watch the road that won't turn off while driving; seatbelt bell on, with belts fastened.

Filed Jun 9, 2022 · Electrical · NY

Battery died and will not hold a charge. Air bags were not engaged due to the elctrical system being impacted. Battery was charged and left overnight and the battery was fully drained in the morning and the car would not start. Battery was charged again and driven to the Subaru Dealer. The dealer fully charged the battery and left it over night and the same thing happened the next morning. The battery was drained and the car would not start. The dealer replaced the battery with a new battery and performed a software update. Next morning the battery was fully drained and the car would not start. The dealer as of today does not have a solution after have the car for 3 days. The dealer has told me they have all the diagnostic tests they can think of and nothing is showing up as being wrong or that identifies what is draining the battery. I believe the Control Area Network (CAN) is failing and is not going into deep sleep mode when the car is shut off and is causing the battery to drain. Until the defect in the CAN software is fixed the battery will continue to drain.

Filed Apr 2, 2022 · Electrical · WA

My 2020 Subaru Outback has had starting issues since shortly after I purchased the car on 1/31/2020. If I do not drive the car for more than two or three days the car will not start without a jump. On one occasion the battery was completely drained so that the fob key would not even unlock the car. Not long after I purchased the car I spoke to a mechanic at the Subaru dealership regarding the battery drain issue. He offered me no solutions except to say that there are many computers in the Subaru Outback and together they draw a lot of current. I do not know if I received a defective battery or if there is some electrical defect causing excessive battery drain when the car is off.

Filed Jan 31, 2022 · Electrical · PA

I have a 2020 Subaru outback that I purchased brand new one and a half years ago. It has 31,472 miles on it on December 28, 2021 and then again on January 31, 2021 my car would not start on the battery had to be replaced.

Filed Jan 30, 2022 · Electrical, Lights · MA

my subaru has 12,ooo miles on it and in the past week has died on me. When you try to start the car and depress the brake, the brake locks and you cannot push it anymore, in addition, the battery does not turn over. On the first occasion, we tried to jump start the car but the battery read as normal activity and the car would not start after that. The car just started up for no apparent reason the following day. thankfully we were at home when this happened and we have a 2nd car. The second time, same thing with the brake when we tried to start car and no turnover with the battery but and the car still will not start on the following day but this time it looks like the battery has died. Taking it in to Subaru dealership where supposedly the have never heard of these problems before!

Filed Nov 17, 2021 · Electrical, Engine · MA

11/10/21 first incident: vehicle stalled in middle of dangerous busy road intersection: would not start. After about 15-20 min, it restarted. Drove to Dealer who reported: "battery low, taking too many short trips running down the battery. Many codes found. all referring to low battery". 11/16/21 second incident in remote beach parking lot. After a 30-45 min walk, vehicle would not start. solenoids clicked, engine turned over a few times, but would not start. 15-20 min later, was able to start. Drove to dealer and left vehicle. Tech wondered if problem was maybe not the battery, possible loose wire, but none found immediately. Left car with them. 11/17/21: Dealer called: "bad fuel pump overheating and stopping. once cooled down would run again." Ordered a new part will be here in 2 days. I am not sure of their explanation since the car had a long time in the cold for fuel pump to cool down. If they are right, then the fuel pump must be defective from manufacturer.

Filed Oct 26, 2021 · Electrical · NM

Twice I The car is approaching one year old, and twice in the last 2 months the car would not start when I got in the car after it had been sitting in my garage for a number of days. I did not leave the light on or the door open. I had to call Subaru Roadside Assistance to jump start the car because the battery had died. There were no warning signs that the battery had drained. I am a 70 year old woman and it is extremely dangerous for me to be out somewhere, particularly at night, waiting for someone to arrive to give me a jump start. The dealer says the battery is O.K. after getting an appointment with them and having driven it for awhile, but obviously the battery is being drained when it is not driven for awhile.