Re: Engine Immobilizer and Key Battery

On 2020-06-03 21:56:14 +0000, Darryl Johnson said:
> 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.

These new-fangled key-fob things are just a pain in the backside ... 
and bloody expensive if you lose it!! Technology simply for the sake of 
it and to appease the terminally lazy.   :-\

I always carry a small jeweller's screwdriver with my keys so that I 
can replace the battery on my car's third-party alarm / imobiliser 
remote. The rare times I'm somewhere far from a shop that stocks the 
semi-standard battery, there's always the Automobile Association that 
can be called for a replacement.