How To Change Battery In Subaru Ascent Key Fob. Lately I have been getting the battery low indicator on the MFI about the fob. Adjust the seat to the desired position.

Subaru keyless remote key fob smart HYQ14AHK replacement keyfob smartkey entry push button car starter control transmitter - Unlocked 203CCuo. I own a 2017 Impreza with the same fob style. The rectangular shape Style 1 has a release catch 1 on the mechanical key 2 itself very near the key ring hole as shown.
If you need the battery you can grab a 5 pack of the required 2032 style battery here for less than I paid for my single battery at the store.
Quick video show the easiest way to replace the battery in the key fob of a subaru key using a subaru xv crosstrek key fob as an example. The rectangular shape Style 1 has a release catch 1 on the mechanical key 2 itself very near the key ring hole as shown. Every two years or so or when the battery is low you may need to change the key fob battery. If you have a model of Ascent which only has a key fob with startstop button and no place to insert a key then try placing your key fob as close to the startstop button as you can and then start the vehicle.
