Thread: C30 Electrics : - Dreaded brake warning & electrical madness
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Old Jul 11th, 2018, 10:40   #2
LizardOfBodom
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Originally Posted by Droverunner View Post
Bought daughter an otherwise mint 2007 C30 2.0 diesel 10days ago and all was great until it had electrical madness and then wouldn't start. Fitted a new quality battery... OK for three days and now done it again. Searching on here and on Google fills me with horror about this known issue.

With ours it... showed a brake failure message, lit up ABS and anti-skid lights, wipers came on, no indicators and engine would not rev.

Can someone give me a basic description of the possible modules/ECUs involved and their locations?
That actually sounds like alternator issue, did you check it actually loads the battery? Its pretty common that part fail on P1 cars and when voltage drops it triggers all weird and usually false warnings.
Check alternator first, then we will dig deeper.
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