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Old 12-30-2019, 07:19 AM
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Michael
Location: UK
 
Join Date: Jun 2010
Posts: 2,164
Mein Auto: BMW 640i SE Convertible
Did you fully charge the battery first??? If not then do this first, unless the battery is now so dead it will not hold a full charge. As mentioned even small variances in voltage create issue, Cannot stress enough about the battery condition on these cars!!!
Start here first don't dive in until you know you have a good battery!!! Remember you need and AGM type battery with the correct amper/hour rating!
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Always said I would go back to a 6 series

Last edited by 645/333; 12-30-2019 at 07:22 AM.
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