Beeping

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Yes, the fob battery needs changing and no, you ain't talking out of your arse, dwalsh. The OP needs to get a new battery smartish though as it only gives you about a year before it packs up.;)
 
I finally got round to changing my battery the other day. It's only been beeping for about 6 months. But being tight, I made it last as long as I could.
 
How does the car know what state the fob battery is
Clever stuff.
Signal strength? Coded message from the fob? Various ways are possible.

Spot on GG. When fob battery drops below a set threshold. An extra bit of data is added or removed, I can't remember which. There's a definite change in the data string makeup, between a good battery and a low battery. I tested this on a scope many moons back, as I was curious about it myself.
 
Is that what beeping means mine started doing that other day.
Yes. The fob battery is nearing the end of it's working life. Mine worked on for 6 months before I changed it. But I suspect that some batteries last longer than other's.
 
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