Volvo Repair Questions? Ask a Mechanic for Answers ASAP
Thank you for using JA. I'm Baz, one of the automotive experts, I try to be available in the afternoon on weekdays and in the evenings on the weekend. I apologise if I do not respond to your question promptly, I can assure you that I will respond as soon as I can. Thank you
Have you tried to carry out a parasitic drain test? The most simple one is to connect the ammeter leads between the + battery lead and + battery post.
You have to turn the car off completely, connect the ammeter, use a clamp to press the bonnet switch in, lock the car and then wait 15-20min. There will be a high drain until the various modules power down. 50mA is the maximum allowed drain with the car completey off. If a drain is found then I will advise you how to carry out further tests to close-in on the cause of the drain.
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