Parasitic battery drain leaving vehicle dead
ELECTRICAL SYSTEM
51 NHTSA complaints · 2023-10 → 2026-03 (sample of 200 most-recent of 1025 total)
“Parasitic battery drain when vehicle is turned off. The DCM module in these vehicles will not shut off properly and continue to drain the battery. Subaru has firmware on the vehicle that will not fully charge the battery when driving to save fuel. The vehicle has had 6 or more…”
“Parasitic battery draw - when left completely unattended for about 10 days, the battery is drained, leaving driver stranded and in need of a car jump. Has occurred twice on a new battery installed in late Nov.”
“I am on my third battery for this car. It apparently has a known software issue of a parasitic battery drain that destroys the battery, leaving me stranded.”

