I've got an Astra G 2.2 Sri and occasionally when I take the key out of the ignition I get 3 or 4 beeps, it's happened twice now (didn't realise it was my car the first time lol), anyway, I searched on here and it would seem that it's an indication that the backup battery in the powersounder is dying.
So my questions are:
1. Has anyone ever changed the batteries in it? Aparently, you can disconnect it in the correct order and open it up and solder some new batteries on. Anyone got any advice about this?
2. How much is it likely to cost if i took it to Vauxhall to get done (as they will replace the whole unit)?