How long should a key battery last?

[tohendy]

If you use the remote a lot to either close the convertible/windows it will use more energy and therefore last shorter.

How do you use the remote to close/open the convertible and windows?

[W5Hans]

By holding the button down for a long time until the windows are closed again

[P_Coastal]

Also covered in GTK App:

2D59BA1E-C2F9-495A-8CD7-36104624F09C.jpeg (161.7 KiB) Viewed 1354 times

[tohendy]

Thanks.

Mine is a new one where you have to take off the two side pieces to get at the plate covering the battery.

[tohendy]

So I got both new batteries in the key fobs but the low battery warning is still coming up when I first start the car.

Any ideas?

[tohendy]

By holding the button down for a long time until the windows are closed again

I found this interesting so I asked the dealer and he said we don't get that in the US. Go figure!

[911R]

I buy a 10-pack of batteries from Amazon. I always replace the spare key at the same time as the main key.

[tohendy]

I buy a 10-pack of batteries from Amazon. I always replace the spare key at the same time as the main key.

Good idea. I think they are dying because they are hung just inside the garage door.

[911R]

.
I think they are dying because they are hung just inside the garage door.

I agree although I sure missed that tech. It may be searching to find the car when near the car?

I have noticed that the Porsche lights up when I walk past it with my wife's Mercedes car key fob (it uses the same type of battery + the same technology?).