Hi guys...
I recently upgraded to include Bluetooth in my car... I got the used TCU from a junk yard and the guy said it was what would fit my 03/4.4.
Everything appears to be OK, but when the phone connects, a few seconds later I receive the message "Bluetooth signal weak" on the phone and it eventually disconnects.
Am I missing something?
Any thoughts would be greatly appreciated!
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Say what you will, nothing drives like a BMW.

2003 X5 E53 4.4
2001 740iL Sport
1990 325i E30 - Restored/Restoring