I have a 2001 3.0i-German version X5 with built in BMW GSM mobile telephone system (wireless handset).
Most likely this is a Siemens Bit II system.
This system just went belly-up
, and the price for repair is horrendous
.
Is it possible to utilise the existing antenna, microphone, voice recognition etc and install an aftermarket Bluetooth system instead ?
Thx
Lars