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FrattonEnder · 2nd November 2020, 13:46

My 2005 ZT diesel has got herself an appetite for munching through the battery if she's not run a few times a week. A couple of time this year she's done it after being sat for about 10 days. As far as I'm aware, I've no lights left on, nothing plugged into the 12v socket so I'm at a bit of a loss what's causing it.
Read somewhere that blocked plenums causing water backing up into the ECU can cause a sudden battery drain - they've been cleared out only 4 or 5 weeks ago. Battery was brand new back in May and was taken out and fully recharged in September and taken for a run 2-3 times a week up until mid October.

I know the simple solution is to run the old girl every day, but it's not always practical, especially as it's a bit of a rolling resto and now with 3 cars on the drive, she's been relegated to the back of the queue.
Any ideas?

2nd November 2020, 13:46	#1
FrattonEnder Avid contributor MG ZT Join Date: May 2020 Location: Gloucester Posts: 233 Thanks: 40 Thanked 47 Times in 28 Posts	Battery Eater My 2005 ZT diesel has got herself an appetite for munching through the battery if she's not run a few times a week. A couple of time this year she's done it after being sat for about 10 days. As far as I'm aware, I've no lights left on, nothing plugged into the 12v socket so I'm at a bit of a loss what's causing it. Read somewhere that blocked plenums causing water backing up into the ECU can cause a sudden battery drain - they've been cleared out only 4 or 5 weeks ago. Battery was brand new back in May and was taken out and fully recharged in September and taken for a run 2-3 times a week up until mid October. I know the simple solution is to run the old girl every day, but it's not always practical, especially as it's a bit of a rolling resto and now with 3 cars on the drive, she's been relegated to the back of the queue. Any ideas?