Blobcat
Moderator
- Joined
- Feb 8, 2006
- Messages
- 39,033
- Reaction score
- 27,866
- Location
- Grange Moor
- Your Mercedes
- R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
- Moderator
- #21
If it’s intermittent the regulator pack on the alternator is a good place to look. One of the diodes might have broken down and when the alternator stops in that position it can drain quite fast - has that on my 911