Three problems related to alternator/generator/regulator have been reported for the 2018 Subaru Outback. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Subaru Outback based on all problems reported for the 2018 Outback.
This car is less than 3 years old, 28000 miles and the battery has been replaced 3 times and the alternator once. The battery died again on 4/26/21 and won't hold a charge and so I will be taking it in again and they will probably just replace the battery again. There is obviously something else wrong.
My Subaru 2018 Outback has had one episode of the battery dying while under normal use while stationary. I had only the electrical system on (no gas) for approximately 20 minutes while listening to music, using the bluetooth phone function for approximately 10 minutes, and with the fans on. I was subsequently unable to start the car after completing these activities. There was no indication that the battery was low prior while driving, and no errors were on the dashboard indicating any alternator or battery issue. I had to seek assistance from strangers to get my car jump started. The issue has not recurred but I have been trying to not place strain on the electrical system since, fearing being stranded.
Purchased the automobile with about 7,200 miles on it with extended warranty. Battery failed at 8,000 miles. We replaced it with a new premium battery from aaa. . New battery worked for 8 months then drained overnight. Aaa recharged it and said alternator worked. When driven or backed up after recharging, automobile beeped constantly for approximately 1/2 mile and stopped while in motion. Beeping stopped when vehicle stopped, but started again when vehicle moved forward or backed up. Left with Subaru dealer overnight. Battery was completely drained this morning when service technician tried to start it. Service tech said they could not diagnose problem. Per my internet research, this seems to be a common problem. Subaru should fix it, but seems to be dragging their heels on this issue. Our Subaru is unsafe and not driveable in its current condition. Please investigate and provide assistance. The vehicle has been stationary when the battery drained. The beeping occurred when the vehicle was in motion on a highway and city street. It restarted when the vehicle resumed motion. The beeping continued while the vehicle was going straight or turning while in motion. It stopped when the vehicle stopped. Steering did not feel normal. It was a little sluggish and less precise than normal.