Hi Mark,
Ref your tyre monitor problem.I have a 2002 Series 1 with a TPM that would start bleeping until reset then reset again etc,etc. There is a solution: having removed many small Phillips screws to release the black plastic shroud for the underdash area(in order to fix an electrical problem) I came upon the SmarTire systems receiver, velcroed under the dash.It is a black box approx 2.75x3x.75 inches big and when you unplug the two mini jack plugs an the multipin socket all will go quiet, forever. The display on the centre consol just shows a rectangle with no flashing beeping anything.I have not solved the initial problem yet but I have fixed the Tyre monitor Regards Charles