Quote:
Originally Posted by Westersund
Problems to start, especially when it was cold and wet (autum) or when the car hadn't been driven for a couple of weeks. When it didn't start it didn't engage the starter enough on the flywheel and grind the gears. Turned out that the brand new battery was a 63 amp one, got one for a regular Z4 and not a Z4 M.
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I put a DieHard H7 battery. It does have SOMETIMES extremely slow cranking on a cold engine, even 5 hours after a drive, so slow that it will fail to start. Will try 4-6 times. Then all of a sudden fast cranking and engine starting fine.
A German mechanic inspected it, held the car for a couple days, told me the starter motor is going bust.
Then told me the part is 1500 dollars, refused to install one I would provide.