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Thread: 04 Z4 Won't Start
12-15-2010 07:10 PM #21
01-21-2011 03:31 PM #22
Re: 04 Z4 Won't Start
I had the same problem and replaced my battery, works great now! When I looked at the battery, the status indicator was green, in other words don't trust it!
2003 3.0 Sterling gray, black leather, 6 speed manual.
Hardtop for the winter, Sport, Convenience and Premium packages, Xenon, Hoen H11 driving lights, CDV delete, Alutec and ACS strut bars,Goodyear Eagle F1 GS-D3's.
Dinan stage III software, High flow throttle body, High flow intake, Ram air intake duct, Free flow exhaust.
01-21-2011 04:25 PM #23
Re: 04 Z4 Won't Start
The "Magic Eye" status indicator on auto batteries only shows the condition of one of the six cells, i.e., it assumes all six cells deteriorate at the same rate. My experience is that a battery reaches the end of it's useful life as a result of one or two cells deteriorating much more than the others.
The best test is a load test, but the easiest is to measure the terminal voltage after the vehicle has sat with the engine off overnight, and then to measure the battery voltage with the headlights on and the engine off.
A google for "auto battery voltage test" will give details of how to interpret the results.
01-23-2013 02:39 AM #24
02-07-2013 06:10 AM #25
02-26-2013 08:17 PM #26
brand new battery but same problem
2003 Z4, had just replaced the battery 1.5 weeks ago, car sat for about a week, bad rain storms the past 2 days. Now car won't start, no indicator lights come on, multiple clicking heard from engine, window keeps coming down a little each time and clicking heard from door (window motor). And trunk light and top indicator lights flashing when have key in the ignition. Tried to jump and those same lights just flashed more.
07-01-2013 09:01 AM #27
My 2003 Z3 will not turn over. Dash is lit. Lights work. Past experience tells me battery or starter.
Not sure if the lights dim when i engage the starter. This thread has me looking at the battery, battery connection, neutral safety switch, starter connection. And the key, which I did not know could cause this, but I'll try my spare just in case.
So, ignore the complaint about the age of the forum post and keep providing possible causes, thanks.
10-01-2013 10:55 AM #28
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