Bluetooth connection with car system keeps dropping

Hi all

Has anybody encountered this problem and found a solution?

I have a HTC 3600 WM5 phone (aka the Trinity) and an Audi A6 with cell phone
'preparation). This has both a physical connection (for Nokia) and a
bluetooth one. I have successfully paired the phone with the BT hands free
thingy in the car. This works fine once or twice after the initial pairing.
Thereafter, phone and car mate successfully on switching on but the
connection then drops out after 2 minutes.

I can remake the connnection by initiating a call from the handset. If I do
this, the connection remains live for the rest of the journey. If I try to
anticipate the problem by initiating the call within the initial two minute
linked period, it still drops it at the 2 minute point!

It's hard to know if this is a phone or car problem. I do have other cars
with bluetooth connectivity but they are basic (Nokia car kits) with much
less functionality so I can't tell if there is a similar problem - but I
suspect not. However, my wife has a similar HTC phone running WM6 - and
this does not drop the connection.

There are some other differences too but I won't bother you with these unles
someone tells me they might be significant.

Anyone encountered this? Anything I can do about it?

Thanks

Paul