Hi, the ignition lights all come on but the car will not start . could the computer box be burnt ?

Asked by Mar 02, 2014 at 02:26 AM about the 2003 BMW Z4 3.0i Roadster RWD

Question type: Maintenance & Repair

I jumph started another vehicle . Switched off the Z4 and restarted it but a couple hours
later it refused to start the ignition lights come on and when u turn the key iy just makes a
click sound

2 Answers


Your battery is not supplying enough power to crank the engine over it's time for a new one.

Key on, no crank. Tested clutch switch, blue goes to 12 when clutch down. Key, power to the purple. Starter solenoid, white to 12 to start. Answer? Re-seat start relay plug under cover by master cylinder resovoir. Mine was blue. Cube relay. Plugged base plug in. Car started. Cool.

Your Answer:

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