Two months ago I started to get a bong type sound through the speakers when unlocking the car it would then stop when I put the key in the ignition. it would sometimes bong for quite a while once the car was locked but this was intermittent and random !
I had a look on here and discovered it was a low battery warning. As you do I changed the battery last week and it stopped.
Now it's doing it again

Noticed it's also having a caw before it turns over making me think the battery is dead again !
Has anyone ever had this problem before or know what the best think to do is ?
Cheers