I had a broken telematics control unit (TCU MULF) in my BMW E61 2004 touring which meant the Bluetooth no longer worked for the phone - it was diagnosed fixed and upgraded allowing me to use my phone again. Before coming across their service I spent ages looking for a solution. My only gripe was I did not get an email confirming receipt of my unit which made me a bit anxious initially but a phone call from me confirmed they had received the unit and i then had it back within days. Banny was so pleasant on the phone I was a bit sorry I did not live closer so I could visit in person.