2016 Subaru Outback Electrical System

I purchased a replacement battery in 2023. In August of 2025, the battery died, requiring a jump start. A local auto parts store checked the battery and it tested within acceptable limits, showing around 513 amps. A private shop confirmed this, and cleaned the battery terminals and cables. The battery functioned well until around November 2025, when it again died requiring a jump start. The battery again died in December 2025, about one month later, requiring a jump start.

EYE SIGHT GOES OUT SHORTLY AFTER RECONFIGURATION (HAS HAPPENED SEVERAL TIMES), BRAND NEW BATTERY HAS BEEN DRAINED CAUSING COMPLETE SHUT DOWN, HAS BEEN IN SHOP FOR SIX WEEKS AND DEALERSHIP CANNOT FIND REASON FOR THIS HAPPENING AND HAS REPLACED BATTERY AND DRIVEN THE CAR WAITING FOR A REPLICA TO HAPPEN. MY RESEARCH LEANS TOWARD DCM/ECM/PARASITIC BATTERY DRAIN ISSUES BUT THERE DOES NOT SEEM TO BE A RECALL FOR THESE ELECTRONIC ISSUES.

The contact owns a 2016 Subaru Outback. The contact stated that the horn was inoperable. The vehicle was taken to the local dealer for a routine recall repair, and it was diagnosed and determined that the steering roll connector/clock spring had short-circuited. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 50,000.

The battery is dying very quickly The DCM Data Communication Module is draining the battery causing the vehicle to become stranded This is the fifth battery in this vehicle Subaru is aware of this issue but refuses to find a solution to fix it

Front Passenger Side window will not roll down. The electrical button on the driver's side is not functioning to allow it to roll down. This was a similar problem with the back passenger side window which was taken care within the first year of purchase.

Since owning this new Subaru vehicle, I have replaced the battery once. Today I had the car towed to the dealer with them diagnosing the car telling me it needs a certain module that has been draining the battery. Due to this problem, I have had to take an Uber to work. When the vehicle would not start, I had AAA come out and was told that the battery had 13% power on the one call out and 20% on the second call. In speaking with the tow truck driver for AAA he told me that this battery problem has been going on for a while with the 2015 to 2020 Subaru's. Now the dealer wants to charge me nine hundred and fifty-eight dollars to replace the module. If there was a problem with the module, why was I not told sooner about it? It seems to me that the factory battery is not strong enough to hold a charge and they are blaming it on the module. There were no warnings or messages telling me there was a problem with the battery.

Dead battery issues and DCM battery issue

Car has has 4 new batteries since I bought it new. Had to have this car jumped at least 12 times and some times at night late in downtown Portland where I have not been in a safe location. Once in the snow after hiking to come back at dusk with only one person around at trailhead. Got lucky the jumpstart worked. Apparently today after having it towed to a shop before we take a 9 hour road trip, the mechanic found that it is the voltage regulator in the alternator. Apparently a known issue with Subaru. Ridiculous that I have spent probably over $1000 or more on this issue, and been stranded multiple times and inconvenienced family and friends on this issue countless times.

Passenger window will not go up like it should. Gets to the top of the window and rolls back down. Will not go up unless we do short tiny bursts on the up button slowly to make it stay shut.

Ignition key cannot be removed quite frequently. It requires restarting engine, jiggling shift lever to finally release. I see a Subaru TSB 16-112-18R has been released for this issue.

We have had multiple incidents on this MY16 Subaru Outback draining the battery over the past several years. Sometimes the battery is dead after a couple or few days of driving. There seems to be a battery / electrical management (current draw when vehicle if off) issue as noted in multiple incidents and there was even a class action lawsuit. The SW update associated didn't resolve the issue. One can find many others with similar problems with Subaru Outbacks. (note: our MY17 Crosstrek also is experiencing the same issues). We have changed multiple batteries, needed multiple battery charges, required to buy a battery charger, buy a multimeter, and still have continued issues. Subaru corporate and the local dealership have done little/nothing to resolve the continued issue which causes disruptions in personal schedules, and just hope we don't have a dead battery/vehicle in a dangerous situation.

Key remains stuck in ignition upon putting vehicle in park and shutting vehicle off. Failure comes from faulty switch in the selector lever assembly. Unable to remove key from vehicle for several minutes at a time. Failure acknowledged in TSB 16-112-18R

The contact owns a 2016 Subaru Outback. The contact stated that while attempting to turn off the vehicle, the key failed to release from the ignition switch. There were no warning lights illuminated. After approximately twenty minutes, the contact was able to remove the key. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 23,000.

2016 Subaru Outback has a flawed electrical system that drains the battery. We are on our 3rd battery. Prior to a road trip in Nov. 2022 we had our car fully serviced. Day two of the road trip we had a dead battery. Got a jump and had a new battery installed at Reno Subaru dealership. We went on another 7 day trip in Jan. 2023, left our car at the airport only to return to another dead battery that is less than 2 months old. After doing a little research and making several calls to the Reno dealership and our hometown dealership, we now understand there is a serious problem with Subaru's electrical system. Even newer models will experience the same issue if left sitting for several days. This has been a known issue for years and presents serious personal safety issues for Subaru owners. Especially if you find yourself stranded in a dark parking garage late at night! Shame on Subaru!

The software is designed not to allow the alternator to charge the battery fully. Subaru was made aware of this issue and came out with a software update which they are charging $200 for. This is a defect that causes the car to die every time the car is turned off, they should be updating the software for free.

Something is draining the battery when the car is not in use. This left me stranded and that is a safety issue. On 12/01/21 I had a new battery installed at the Subaru dealership. The battery wasn't dead at the time but I had the car long enough that I thought it was time for a replacement. Late last year my husband took the car for an emission inspection and when they turned the car off, it wouldn't start and they had to boost it off and the same thing happened a few times when the car was parked in the garage I took it to the dealership and they said they were unable to make the battery fail so they could not replace it at no charge. I had them check more items and they said everything was fine. We bought a new battery 3/17/23 and exactly 3 months later it was dead again. From reports online people seem to think it's the starlink system. At the time they had to have an upgrade, I took the car to the dealership twice to upgrade 3G in starlink and Starlink never worked again. There are no warning lights, the battery just dies.

Per my subaru code for checking a depleting battery after not using vehicle for 3 days and then not being able to start car without a jump they said i would owe $29 to check battery as it was not a subaru battery. The code i received is sb37469152. After checking battery which checked out ok their solution to my problem is to buy a battery tender and plug it in after i go someplace. I am 93 years and don't go out everyday so this is a real problem. Never heard of such a issue. UNBELIEVABLE

There is a great possibility of being stranded with this car. And in winter weather, it could be deadly. The car is draining the battery abnormally quick. I have a less than 1 yr old battery and if my car sits a day or two the battery goes dead. The battery will take a charge and then work, but then is drained in a day or two. I have also read there is something going on with the CAN system in these cars. Please help if you can. Thank you.

Have had to replace the battery 2 times in the last 4 years. And currently have an app that shows the strength of the battery in addition to its cells. If the car is not driven in two to three days then the battery depletes energy. There has to be something going on from the numerous times that this has occurred in the last few years. It is not only a very huge risk when this can happen in unfamiliar locations, nto only mechanically but also personally. Works after charging but charging is not always an option. Should not have to rely on this either. I believe replacing the battery by the company should not be our option and should be further investigated...Please! Thank you!

Vehicle only has 42,000 miles and I'm already on my 2nd replacement battery. Continuous battery drain by the Controller Area Network (CAN) causes premature/sudden battery failure. My battery is already groaning on morning starts and the temps are only in the 40s. Subaru needs to correct the problem, not just help pay for replacement batteries. There's no telling where you'll be when the battery dies.

•Yes available upon request. My Subaru Outback has issues starting up even with a battery that tests good. The problem started off as intermittent and continues to happen more often. •I bought this car for Ohio winters and I’m worried me and my kids could get stranded with a drained battery. •The dealership did a 90,000 mile tune up and said to “wait until it breaks or fails all the way to get it fixed, intermittent problems are too hard to diagnose” •Just my local dealership •The battery light flashes, it started happening very sporadically about six months ago, and has progressed into a pretty common occurrence.

Chronic issue with the vehicle draining batteries. I’ve gone through 4 new batteries in the time I’ve owned the vehicle and find that they die in what’s sometimes only a few months after purchase. No lights or other electronic accessories in the Outback are ever left on and we’re careful to keep doors closed when we’re not actively shuffling people or cargo in or out of the vehicle. I just experienced another episode of the battery dying when we returned from vacation to a dead car in the airport parking deck, despite only 15k miles on this battery and all lights being confirmed to have been correctly turned off before our departure. I’m concerned for the safety of my family when the vehicle can’t be trusted to regularly start and the battery could die in situations where my family’s safety could be put in jeopardy.

I'm having continuing issues with premature discharging of the battery even though I now have a heavy duty battery and also carry an emergency jump start battery in case. My Outback is equipped with Onstar so it does draw power at all times, my relatively new Optima battery has shown being drawn down to 25% charge on the Optima battery charger after only 24 hours. Of non use.

I have replaced the battery 3 times in 6 years. I see there is a class action lawsuit that I want to join or receive compensation.

The battery has died multiple times from minor power draw. For example, opening the windows when the engine was off or briefly charging and iPhone with the key in auxiliary. I have replaced the battery at my own expense and this continues to happen.