IPhone 4, iOS 4.2.1 & Bluetooth/Charging with TomTom Car Kit

All
FYI
I have had a 6 mth running battle with TomTom after numerous emails, calls, new replacement car kits and troubleshooting. I basically could not get my iPhone 4 to connect to Bluetooth of TomTom CarKit (find it in Bluetooth search), nor would the Carkit charge the phone. (there were other unrelated app issues too).
Turns out i am behind on this, as if you did not know already TomTom have told me over the phone (by v senior management team member) that the Carkit is not working with a "selection" of TomTom Carkit/iPhone users, due to a bug in the latest 4.2 and/or 4.2.1 iOS. It means the Carkit (£100 + £50 app!) bluetooth and charging feature (the main bits!) will not work with any devices on this iOS.
He says not all people have issue but TomTom working with Apple on it and no date set for updates to fix issue by them or Apple. It means you may as well not try to chase them or Apple as wont change a thing and put your car kit in the loft as it aint going to be fixed any time soon.
I did have my old bluetooth headset working fine, until i disconnect pairing and tried to re connect. It no longer will reconnect.
Any one else had this, got a fix or an update on the issue?
thanks

I found out today that when you turn off the GPS Enhancer (in TomTom go to Settings/Advanced/GPS Enhancer) the phone does not get so hot anymore and it actually charges in the car.
So from my short test, the GPS Enhancer seems to be the culprit.
Hope this helps.

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Can I check with you if you have this problem..
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Then go to the Bluetooth settings page where you can see all the paired devices.
after that, make a connection to the carkit.
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