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Posted

2008 C5 X7 Auto...

 

The first thing I noticed as I tried to drive off this lunchtime was that the parking brake wasn't disengaging as I would expect it to. I worked out that it was stuck on and (with foot on brake) released it. I drove off then noticed that I had ESP and ABS faults as well.

 

I've had a quick search on here and elsewhere and see that it could be a sign that the battery is on its way out or it could be that I need a new ECU costly. My first thought was that it might be a sensor issue.

 

I don't have any diagnostics tools.

 

From memory the previous owner (who I trust) had recently replaced the battery so it it two years old at most. I'll take it for a long drive and a battery check anyway though. 

 

Any other ideas?

Posted

I would go with the battery checks first. If you start to get warnings of low oil pressure as well, then it could be a fault with the engine fuse box. Both of these are mentioned in the Common Problems pinned topic. If you have a trailer socket then check that it is dry and clean.

Posted

And then it went right, all by itself...

 

I went for a longish drive - as few electrics switched on as possible and in 'Sport' mode to keep the revs up for the alternator - but that didn't improve anything. Went to get my multimeter and found it had been left on so sacked it for the evening.

Got up this morning and it's all fine.

 

Is suspect it will come back though so I'll start with a battery check.

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