35D wont start - Glow Plug pre-heat issue?

[Ozer]

Originally Posted by London Lad

Put your battery on charge overnight while you are sorting the engine ground strap before giving up on it

Can i charge it from the engine bay or have to charge the actual battery from the trunk?

[jfoj]

Best to charge the battery directly from the battery terminals in case there is a bad/loose connection somewhere between the engine bay and battery.

Bad engine to body ground wires are not uncommon on BMW models, the E46 and E38, E39 have this issue with the frame side often. More often in wet and snowy climates.