Hey

Wondered if anyone could help me with ideas of what’s happening on my R60 before the garage look at it next week...

Cars been running fine and has no errors on the onboard computer. This morning, car wouldn’t start, called out breakdown who diagnosed a bad battery... I paid to replace the battery and have it programmed properly.

Car still wouldn’t start, mechanic jacks up the car and takes off a panel, and suddenly the main live wire from the battery to the starter motor / alternator just fell. He jumped straight out to disconnect it, but basically it has melted in the straight middle of the cable, cleanly in half, the shrouding down the rest of the wire is fine. It’s literally burnt and cut in half at one point of the cable.

Im not sure what could have caused it really and the mechanic wasn’t sure either, whether it’s an issue with the alternator (but again surely on-board computer that controls output to the battery would prevent overload); or because the battery itself was bad...

I don’t just want to replace the wire and have the same thing happen again, and because it’s a clean melted split (not melted along the cable) I don’t think it’s a short.

if anyone’s heard of anything similar please let me know 👍🏻