One problem related to horn assembly has been reported for the 2020 Subaru Ascent. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 Subaru Ascent based on all problems reported for the 2020 Ascent.
Purchased new 30 Dec 2019. Owned 5+ weeks no issues - drove 07 Feb 2020 no drive-ability issues or warning lights, parked as usual in heated garage at home. Went to start 08 Feb 2020, when start button pushed, no starting but all the vehicle lights (interior and exterior) flashed brightly and rapidly (3-4 times a second) for about 30 seconds then all electrical inoperative (no lights anywhere, no horn, no starlink activation. . . Subaru road assistance called & they summoned anderson towing (a local towing company); when jumper cable attached to battery immediately all lights came on brightly and a loud electrical arcing noise occurred and it started. If this total electrical failure had happened during vehicle operation it could have result in catastrophic injury and damage. Took vehicle to local Subaru dealership 10 Feb 2020 who checked battery and computer trouble codes and found nothing unusual. How is that possible? it was a total electrical failure - jumping the vehicle reminded me of paramedics successfully applying aed paddles to defibrillate a stopped heart. This situation is similar to other complaints noted for this vehicle. This is a potentially very dangerous issue and needs an immediate remedy.