I have a BMW523i which will not start. I have tried jump starting to no avail. All I get is a click from somewhere at the bottom of the engine. The battery is fairly new. Has anyone out there got any ideas?
I agree with the others the starter sounds like the most obvious...
..but it could also be a duff battery or earth, when you're jump starting it make suer you put the neg lead onto a metal part of the engine (not the battery lead) and make sure you're getting a good contact (check the lights are brighter or the wipers move faster to confirm more juice is getting through).