2019 Subaru Ascent Electrical System
Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.
Complaint Timeline
Chronological view of owner reports
The battery drains prematurely. I have been stranded waiting for 3 + hours for roadside assistance due to dead batter 3 times in December 2021. The dealer told me that due to the number of computers in the 2019 Subaru Acsent that it had to be driven at least twice a week to avoid this problem. The dealer had to replace the battery under the warranty because it burned up when they tried to charge it. touring sub
My car battery went dead and I was unable to start the car. I was camping and fortunately the ranger had a battery jump box. There was nothing wrong with the battery. When I returned I asked the dealer about it and was told these new cars have so many things that need battery power and we must have opened the doors too many times. On 12/27/2021, I decided to purchase a new battery plus the portable jump box because I frequently hike and camp in places far from phone signal and didn't want this happening again. Next camping trip it happened twice. We made sure to keep the doors shut to keep interior lights off and turned the light off when the rear gate was open. The jump box was a life saver as again we needed to jump the car. Then next day as the car sat with all the doors closed, I started hearing beeping sounds almost like an SOS. Lights flashed. The car beeped more and more. We tried starting it to no avail. Luckily, we were able to charge the jump box and successfully start the engine again. This vehicle was made for an active outdoor life style. It is a safety factor to not be able to start your car.
2019 Subaru Ascent experience battery drain. Was able to start after jump and had 13 volts when returned home. Next morning it did start, barely, but was down to just above 12 volts. Appears to be the electrical system drain.
2019 Subaru Ascent with a battery draining for no known reason. Found the lift gate open one evening in the garage when I had not driven the car recently, though had been in the garage and not noticed the issue. Replaced the battery and it was dead within a week. Spoke with a Subaru dealership who denies knowing anything about this issue and stated the diagnostic could take 10-20 hours at over $100.00/hr in certain cases. Really!!!
The vehicle keeps discharging my battery after multiple short trips. I have reported to dealer, they said it was a faulty tailgate sensor but after the repair, it still happens, with increased frequency over time.
Parked car in garage last night. All working properly. Attempted to start car in morning: tailgate open and no electrical activity Car battery dead
Recently have had issues with the battery. I've had to jump the car 4 times in the last month. The car was purchased in August 2021. I believe the electrical system is draining the battery.
Sunday, car wouldn’t start. Even though lights and display came on, engine wouldn’t turn over until I got a jump. After car started, center console went black and all infotainment, Bluetooth and rear view camera ceased to work. Drove hour and a half on highway. Monday morning, battery completely dead. Had to jump again. Now, center screen working, but seems to be battery issue. We had similar car starting problems before and replaced battery less than a year ago February 2021!!!
Battery keeps dying.
TL* THE CONTACT OWNS A 2019 SUBARU ASCENT. THE CONTACT STATED THAT WHEN THE VEHICLE WAS IDLE THE BATTERY WOULD DRAIN WITHOUT WARNING. THE CONTACT STATED THAT THE VEHICLE NEEDED TO BE JUMP STARTED OR THE BATTERY REPLACED. THE CONTACT TOOK THE VEHICLE TO THE DEALER WALKER'S RENTON SUBARU (555 SW GRADY WAY, RENTON, WA 98057, (425) 226-2775) WHO WERE UNABLE TO IDENTIFY THE CAUSE OF THE FAILURE. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE PERSISTED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 7,300.
I have a 2019 Subaru Ascent and my battery has died 3 times now. The first time was on May 2019 and the car would not start. I had to get it jump started by AAA and drove to the dealer where they ended up replacing the battery. The liftgate had somehow been triggered while in my garage and did not fully close and drained the battery. At the time it was suspected I had accidentally hit the FOB to trigger the liftgate to open but that never happened before and has ever happened since. Then in April 2020 car wouldn't start again. Car was jumped by AAA but when I attempted to drive to dealership it died again and had to get a tow truck to bring car to dealer. Battery was tested but not replaced. Dealer said I was not driving car enough (not driving at all during the pandemic) and needed to get a battery maintainer for battery which I did. I used battery maintainer when I was not driving the car regularly and car was fine until Oct 14, 2021. We had been driving car regularly for month so we were not using the battery maintainer as we thought the battery would be charged through the regular driving. But on Oct 14 the car would not start and when I tried to start it, all the dashboard and exterior lights were flashing. Plugged in the maintainer and after several hours the liftgate started beeping and then the front of the car started beeping. I had car towed to dealer and they replace battery again and also changed the power liftgate module to stop the drain on battery if door is open for more than 20 minutes.
Battery drains and vehicle inoperable. First time had to have towed to dealer- Adventure Subaru- who said problem not identified. Happens repeatedly. Left stranded .
I chose electrical problem above, however to be specific, the issue is with the battery life. I’ve read numerous complaints online of other customers of Subaru outback and Ascent, and they are reporting the same issues that I am having. Premature battery drain. I am not misusing the car at all. This is happening with normal usage of the car. I have been left stranded in several places because of this issue. It’s gotten to the point where I had to purchase an electric charger to carry around with me. The last battery that was purchased for the car last year is now completely dead. It is ridiculous to have this amount a batteries replaced in such a short period on a newer model car. My car is only three years old. This is the third battery that I am replacing. I cannot count the number of times happen to me. So the date below will be the most current date when the battery died. The worst part is, Subaru knows about the issues, but they just keep giving me excuses for why it’s dying. Furthermore, they keep replacing it with the same type of battery. It’s not just me. These complaints are numerous throughout the Subaru ascent owners that I read online.
THE BATTERY IN OUR CAR WAS DEAD AFTER ACCIDENTALLY LEAVING THE TAILGATE DOOR OPEN FOR ABOUT 3 HOURS. WE DIDN'T THINK THAT WAS ENOUGH TO DO IT BUT JUM STARTED IT AND IT WAS OK FOR A DAY BUT THEN WOULDN'T START REGULARLY WITHOUT LEAVING ANY DOORS OPEN. WE TOOK IT INTO SUBARU AND ULTIMATELY HAD THE BATTER CHANGED EVEN THOUGH THEY TOLD US IT WASN'T THE BATTERY. THE BATTERY WAS DEAD AGAIN TODAY WHEN WE WENT TO USE IT. WE MAYBE LEFT THE TAILGATE OPEN FOR 30 MINUTES A FEW DAYS AGO UNLOADING GROCERIES. THAT SEEMS A LITTLE EXTREME. THE VEHICLE WAS STATIONARY IN OUR DRIVEWAY BUT IT HAPPENED AT A PARKING GARAGE BEFORE TOO LEAVING ME TO NEED TO GET A RIDE.
Battery recurrently dies
3 times in past 6 weeks car battery was found dead. Recharged 3 times with wall charger. Replaced battery today after 3rd time of being dead.
BATTERY IS DEAD FREQUENTLY (1-2 TIMES PER WEEK). THIS OCCURS AFTER LEAVING ONE OR MORE DOORS OPEN (THUS THE INTERIOR LIGHTS ARE ILLUMINATED) FOR ONLY 5-10 MINUTES. WE ARE CONSTANTLY HAVING TO JUMP START THE CAR USING A PORTABLE LITHIUM ION BATTERY THAT WE PURCHASED BECAUSE OF THIS ISSUE. THIS HAS BEEN OCCURRING FOR OVER A YEAR.
MY BATTERY DRAINS SURPRISINGLY QUICKLY FROM SIMPLE ACTIVITIES LIKE USING THE REAR HATCH DOOR A FEW TIMES BETWEEN STARTS, HAVING THE FRONT LIGHTS ON FOR AS LITTLE AS 15 MINUTES BETWEEN STARTS, AND HAVING THE DOME LIGHTS ON FOR AS LITTLE AS 1 HOUR BETWEEN STARTS. THIS HAS LEFT ME STRANDED MULTIPLE TIMES INCLUDING AT A FOREST CAMPGROUND WITHOUT CELL COVERAGE. I HAVE USED AAA ASSIST MULTIPLE TIMES, AND THE HELP OF STRANGERS. I HAVE ALSO HAD TO PURCHASE A JUMP START BATTERY TO KEEP IN MY CAR. I HAVE ASKED SUBARU TO FIX THE PROBLEM, AND BEEN TOLD SIMPLY THAT MY BATTERY AND ELECTRICAL SYSTEMS ARE WORKING NORMALLY.
MY BATTERY HAS DRAINED TWICE IN 2 MONTHS, TO THE EXTENT THAT IT NEEDED TO BE JUMPSTARTED. TO THE BEST OF MY KNOWLEDGE NOTHING ELECTRICAL WAS ON. THE CAR WAS PARKED. BOTH TIMES REQUIRED SEEKING EXTERNAL HELP TO DRIVE AWAY. WHEN IT FIRST OCCURRED, I HAD THE BATTERY CHECKED BY MY DEALER AND THEY FOUND NO ISSUES WITH THE BATTERY. TO PREPARE FOR ANOTHER DEAD BATTERY, I PURCHASED JUMPER CABLES SO I WOULDN'T BE STRANDED.THE FIRST TIME THIS HAPPENED IT WAS AT 12,000 MI; SECOND TIME AT 23,000 MI.
On numerous occasions (probably 12-18 times) over the last 18 months our new Ascent will not start because of a dead battery. I have discussed this numerous times with the dealer, they have even performed tests on it but claim that it passes all tests so there is nothing they can do. No doors are being left open or lights on, yet every few weeks this problem occurs. My wife cannot take the car to the store without worrying about it not starting properly and having to get a jump from someone.
We believe the battery is being drained by the CAN system because it is only 2 years old and is already completely dead leaving my vehicle inoperable and creating a potentially dangerous situation
In March of 2020, I took the car into the dealership due to the multiple times I had to charge the car, their answer was I wasn’t driving the car enough. They charged the battery and told me I needed to drive the car at least 20 minutes every couple of days at 50mph+ in order to keep the battery charged. In August of 2020 I had just loaded up the car to go on a vacation and when I went to leave the house the car would not start. After charging the battery for 30 minutes in the garage it then started. Fast forward to June of 2021, I have had to charge the battery 4 more times in order for it to start. The last time was when we were leaving a campground in May, 2021, and the car wouldn’t start due to the battery. Fortunately the campground had a charger and got us back on the road.
CAME OUT TO THE CAR AND FOUND A COMPLETELY DEAD BATTERY AFTER IT HAVING NO WARNING OF A LOW BATTERY. CAR WAS DRIVEN YESTERDAY.
BATTERY DEAD EVEN THOUGH CAR HAS BEEN IN GARAGE AND DRIVEN AT LEAST 2-3X A WEEK. HAPPENED A FEW TIMES SINCE THE FIRST INCIDENT HAPPENED IN OCT 2020, AND THEN SUBSEQUENTLY MULTIPLE TIMES WHERE WE NEED IT TO BE JUMPED START. EVENTUALLY TOOK TO DEALERSHIP FOR DIAGNOSIS AND THEY HAD TO REPLACE THE BATTERY IN MAR 2021.
We have had two batteries die since purchasing the car new in 2018. I saw an article about electric system failure in the ascent and it said to file a complaint.
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Quick Summary
The 2019 Subaru Ascent has 123 Electrical System complaints on file. Review the timeline above for detailed owner experiences.