Thread: Electrics: 70: - Battery Drain?
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Old Mar 20th, 2019, 10:13   #7
Joe H
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Last Online: Apr 10th, 2024 10:42
Join Date: Dec 2002
Location: London
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Quote:
Originally Posted by tdidave View Post
This was an ongoing problem on my 1998 V70 Tdi for quite a few years.
A couple of possibilities in your case, Dave:
1. The alternator has not been charging the battery fully for a long time and that showed in marginal conditions (cold start) as it just didn't have the power.
2. In older cars if the diodes in the alternator were faulty they would allow current drain through them when ignition was off. I don't know if the V70 is still wired in that way but if so it would cause exactly these symptoms?
Joe
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