I have a 2006 C max petrol 1.6. The engine is immobilised and the engine won,t turnover with either key. The dash lights do not dim when trying to crank the engine. I have run the reset cluster test and the following code appears - DTC#9681 which seems to indicate a possible problem with the key transponder. The battery in the key is good and so is the car battery. Other fault codes that show are DTC#D900, E510 and 5750 but I am not so concerned about these as yet.
Additionally I have taken the cluster unit out and had it checked and the plug pins re soldered by a pro. The problem could also be with the ecu (or pcm) This has not as yet been checked. The car has been towed to the ford dealer and diagnostics came up with zilch.
I have also run the test to check the G.E.M by depressing the the rear demist button whilst turning the ignition key to position 2 and this seems to be working ok as the main car controls and buttons beep when running this test.
I have acquired a different cluster unit with identical unit numbers and this is soon to be cloned to my car to double check that the original unit is not defunct.
It could be the transponder or the ecu.
Does anyone out there have another possible solution for my cars problem?
Many thanks ;-}