Hello!

I wanted to test an amplifier and subwoofer in my 530d today and I dit it. I started the installation by disconnecting the battery. Installing was ok and everything worked. But after a period of testing the onboard computer announced that the battery voltage were low. I shut down everything and unistalled the amp and the sub. My mention was just to give it a test anyway. But after I connected the battery again after uninstallation and started a car, onboard computer told me that ABS and driving control aren?t workin and neither is tyre pressure controlling (or whatever it is)...?

Damn I thought! Did I really broke something or what is it? Can you tell?

edit: Couple of guys on a Finnish forum say that low voltage of a batt may cause this announcement but nothing should be really broken. I hope so.

 

I just got my car back from the shop. I had multiple faults: car too warm - drive slowly; car overheated - stop car; ABS failure; and finally the I Drive died. Brough the car in and they diagnosed as a voltage problem. Replaced the battery and some wires and then tested it out. No faults. Everything was fine. It was the low voltage that casued the error messages.

 

Well atleast we will be able to predict when our battery needs replacing-if the whole computer shuts down or goes wierd-change the battery-good tip!