Hi my BMW wont start when the weather gets colder. After a jump start it starts all day until it sits for a few hours then wont start again. Is it a new battery it needs?
BMW Help
Nov 18, 2005
9 Replies
Do you have some kind of load on the battery that wasn't there when it left the factory? I'm thinking badly fitted electrical acc's, ICE, immobiliser (suffered a s***ty DIY immobiliser myself on a Cossie back in the day, took weeks and £££s to diagnose) etc?
Yup. The first frosts bring out all those with dodgy batteries.
The message from "George" contains these words:
Petrol or diesel?
The message from "George" contains these words:
Well, that eliminates dying glowplugs!
Yes. Soon it won't even jump start, which is the next stage in battery deterioration.
Or it's got a current drain, disconnect the earth lead from the battery once you've driven it & see if it sparks as you do so. If you reconnect it four hours later & it will start the car then you need to find the current drain, if it won't start the car you need a new battery.
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