We are having a progression of problems on our 2021 we've had for 2 months. The first problem was the homelink buttons on the rear view mirror. The first garage door paired no problem. Attempting to pair the second (same exact make/model) did not work. The searching light would not stop flashing and the door would not pair. Then none of the homelink buttons would work, including the one that previously paired no problem.
Problem 2 started yesterday, the radio wouldn't work, apple car play, nothing on the touch screen.
Today the car wouldn't start and it said the battery was dead. Making a 2nd attempt to start the vehicle activated the tailgate, it was engaging and disengaging repeatedly for about a minute, and now it won't latch. Attempting to turn off the car activated the christmas tree, that persisted on its own for about 30 minutes. Now it's just beeping over and over.
Having it towed to the dealer. Fingers crossed.
I'm just finding this. I have 2021 Ascent (Premium) - loved everything about it - until. Drove 75 miles one morning. As I pulled into parking garage a bunch of lights began to flash on dash and beeping happened. After reading manual in parking garage - suspected the dash lights were the rear seatbelt warning lights - but two seats were buckled with nothing in seats. Center belt not buckled and nothing in seat. So still a mystery.
Re-started. Pulled out of garage. No warning lights. 75 miles later, pulling into my neighborhood - seat belt lights started flashing and bell dinging. There was also some other bell - but I could not identify it.
Read a ton of stuff online from others. I read in the factory manual (not well organized or written) that a seat belt warning light can happen IF someone is in the seat - UN buckled - IF the car slows to less than 6 mph.
I've worked on cars all my life - and I could not imagine an engineer thinking up something absurd like this - so I figured it was bad manual writing/editing.
But then I noticed a tiny pouch of IGNITION WRENCHES had moved from the - belted - rear seat behind driver - over onto the - unbelted - middle rear seat.
This wrench set weighs about 1.7 pounds.
So - if the user manual is right, could this bell ringing have happened because - while driving 75 miles, my 1.7 pound pouch of tiny wrenches "sneaked" over to the unbelted middle seat...where it remained "undetected"...until my Subaru slowed down to less than 6 miles per hour?????
Could that be because the computer thought it was detecting a 1.7 pound "infant" sliding from one seat to the other - but then it waited to sound the alarm until the Ascent slowed to less than 6 miles per hour?
I still have no idea how all this happened - but I started traveling only with all seat belts buckled - and nothing in rear seats at all.
This worked for about a month
Then after driving 75 miles back home one day - ALL the seat belt warning lights started flashing and some bell started dinging as I slowed under 6 mph
I could not trade the car in because dealer was closed for Covid.
So I read about terrible factory batteries.
And put new double-strength AGM battery in Ascent. And put it on smart charger when parked.
So for a number of 20 mile runs nothing has happened.
But I still have no idea what happened.
And I don't trust this otherwise wonderful car to take me anywhere without 2 NOCO booster batteries and my diagnostic computer with me.
Wonder if anyone else had similar mysteries?