LE092012 said:I think the battery maybe 'shot' on the Z4 (it looks like the original so that makes it 12 years old.......
My thinking is a new battery will solve the problem?
MHZ4C said:That battery has done well! Do you have the recondition mode on your Ctek? Maybe worth a punt if any lead sulphate has built up over the past 12 years.
Out of interest, how have you maintained The battery? Regular trickle charging? Is the car used all year?
biojo said:this is one i got when i first got car
http://www.carparts4less.co.uk/cp4l/c/BMW_Z4+Coupe_3.0_2007/p/car-parts/car-electrics-and-car-lighting/electrical/car-battery/?444771108&1&a2f97f73d48ee3e266caceef38c26e48463358f6&000020
you can find a discount code 15 quid off if you spend over 100.
had similar battery in old car for 12 years, always fired up on daily use, wasnt till this year when it was in minus temps it struggled and once needed a jump.