530d Won't crank - won't start. help!

[ronnie-space]

Hello everyone - new forum member here looking for help.

I have a 2005 530d, I am the second owner, FSH, 60k miles.

Car runs reliably and always starts on the button.. until yesterday it was due to go in for a service and went to start it up and it was dead - typical!

Console/radio/dash signals coming on but car will not start. No turnover, no clicking, nothing. Console/radio/dash signal go off and come on again etc.

Have tried to jump start and tried charging battery but makes no difference.

I have noticed there is a high pitch electronic type noise/buzz/ring that is coming from around the engine bay, and even after locking the car and 30mins + the green led for window lock is not turning off.

I am wondering if a relay/switch is stuck on and the car is not shutting down all systems and there is a battery drain..?

Can you help?

Is there a way to diagnose/fix myself easily?

Any help highly appreciated as am stuck without a family car!

Thanks in advance - Ronnie

[ronnie-space]

Just to add - I checked the voltage at the battery and it is 12.26V

I just tried to start again and the console warned "increased battery drain".

[janesbenth2]

Originally Posted by ronnie-space

Hello everyone - new forum member here looking for help.

I have a 2005 530d, I am the second owner, FSH, 60k miles.

Car runs reliably and always starts on the button.. until yesterday it was due to go in for a service and went to start it up and it was dead - typical!

Console/radio/dash signals coming on but car will not start. No turnover, no clicking, nothing. Console/radio/dash signal go off and come on again etc.

Have tried to jump start and tried charging battery but makes no difference.

I have noticed there is a high pitch electronic type noise/buzz/ring that is coming from around the engine bay, and even after locking the car and 30mins + the green led for window lock is not turning off.

I am wondering if a relay/switch is stuck on and the car is not shutting down all systems and there is a battery drain..?

Can you help?

Is there a way to diagnose/fix myself easily?

Any help highly appreciated as am stuck without a family car!

Thanks in advance - Ronnie

Thank you so much. The post presented me with a wealth of information, allowing me to broaden my horizons.
heardle

[alex0607]

Have you tried to use a code reader to check for errors?

[ronnie-space]

I took the battery off the car in the end to charge, and after a full charge all was OK.

Charging on the car, or through the battery charging points in the engine compartment was not the way to go with a trickle charger.

[MMe520xDrive]

I had this once and the culprit was worn/bad starter. After replacing it problem solved.