Warning problems of the 2021 Subaru Ascent

Three problems related to warning have been reported for the 2021 Subaru Ascent. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 Subaru Ascent based on all problems reported for the 2021 Ascent.

1 Warning problem

Failure Date: 06/05/2025

I have a 2021 Subaru Ascent that falls under an extended warranty regarding the windshield due to a faulty windshield. My windshield has cracked, reduce visibility, and does not allow the forward collision warning to work properly. Subaru recognizes the faulty windshield and refuses to remedy the issue. I question the safety and integrity of this windshield to protect from normal road debris strikes, allow normal visibility, and the integrity of the lamination of the from windshield in the event of a collision.

2 Warning problem

Failure Date: 11/30/2022

Adaptive cruise control, automatic emergency braking, forward collision warning, lane departure warning, lane keeping assistance, eye sight, rab, some ! symbol, and check engine light are all on and not working. You know everything that makes a Subaru. This is not the first or even second time. We are on the fourth instance of this happening. We live 2+ hrs away from the closest dealers. The first few times it occurred, we called to make a appointment. Each time was always a few weeks out and the issue would clear a day or two before. This last time has been going on for 6 weeks. We both work full time and have a very sick kid so making a appointment is hard. This last time I asked if I can drop in just for a scan due to being in town for an appointment. Was met with we are backed up with way to many repairs. Also it would not be fair to any other people. It is most likely your gas cap. I have made sure the cap is tight as it can get every time from the first time it occurred. So all safety features on the Subaru Ascent just stop working if the cap is not tight. Not only is this a major safety issue their qa is asleep at the wheel. Known issue, just check the forums.

3 Warning problem

Failure Date: 02/01/2021

Vehicle wanders on the highway. When passing a vehicle on the road the lane centering assist tries to hug the centerline and the driver must keep pulling he vehicle back to the center of the passing lane. A short lapse of steering could pull the vehicle into the side of the vehicle being passed. Full time job to keep the vehicle from wandering when very liitle wind and almost impossible to keep it from wandering when the wind is blowing 15-20 mph. Not a pleasant relaxing drive.


Other Lane Departure related problems of the 2021 Subaru Ascent



Ascent Service Bulletins