Re: Engine Immobilizer and Key Battery

On 2020-06-03 5:07 p.m., Wade Garrett wrote:
> Got a 2017 Forester with remote keyless entry but NOT push button start.
> 
> If the battery in the key cap drains so low that the key push buttons 
> won't lock/unlock the door, can the engine still recognize the 
> immobilizer chip in the key and still start/run?

When the battery in my Audi's key got too low, the car started, but 
wouldn't keep running. Plus I couldn't use the remote to lock/unlock 
the doors.

Fortunately, it was a simple job to replace the button battery in the fob.

Obviously, an Audi is not a Subaru, and things may well be completely 
different, but I wouldn't take the Subie too far away from alternate 
transport until you get that battery replaced if I were you.