Still haven't got this problem resolved. I managed to get this explanation from the garage:
'Checked for not starting found NATS code logged, cleared code , no difference, removed IPDM- and checked connections - ok, charged
battery, - requires new battery. Carried out further checks using consult and found IPDM not showing on control unit links. Carried out wiring and CAN communication checks - seem to be ok , possible internal fault in IPDM would need to try another IPDM first , part number for IPDM is 284B7 AL51B price - 1155 +vat.'
I am of course getting the battery replaced (£60.00 + vat fitted) but do you think this is a reasonable diagnosis? Any advice for what else they should try or if not any idea where I can get an IPDM any cheaper? Am reluctant to fork out all this money for a 'possible internal fault in IPDM'.
Many thanks for any help!
Dave