The remote controls for my Ford Scorpio Ultima will not operate. I have two of them and have tried getting them to connect, which they eventually will after three or four attempts, but within 24-48 hours they then fail to operate. The batteries on the remote controls are both good, one having a new pair. Neither of the two fobs will connect at all when I try to programme them. Although I can get the bleeps to put the car into programming mode with the ignition switch, when I press the unlock button on the fob it fails to work.
Looking at an electrical drawing on the internet, it shows the remote is operated by a radio signal and not infrared. The drawing shows the fob as A68 and the Central Control Module, which is the receiver that picks up the radio signal from the fob, is A127. Do you have any idea where in the car this is situated, as I have come to the conclusion this is where the trouble must lie? Would you agree with my conclusion or do you have any other idea of what the fault could be? Geoff Harris There are a few possibilities as to the source of the problem. The vehicle has a rolling code system which means that each time the door is locked or unlocked using the remote, the code is changed and the new code relayed to the remote for the next use. If the fob or central system is forgetting this code, it would explain the issues you are experiencing. I would start by cleaning the circuit board within the remote unit. Open the fob and remove the battery – by gently pushing the buttons through, you should be able to release the circuit board. Turn this over to reveal the contacts, ensure that these are complete and not worn or broken, then clean them using an electrical cleaner spray or isopropyl alcohol. Now reassemble the unit and try to recode.
It may also be the case that the conductive operating buttons within the remote have deteriorated and no longer connect the circuit correctly.
As you can get the system to bleep using the ignition switch and it fails to connect to the remote, the problem is most likely within the remote fobs. However, if you wish to locate and check the central unit, this can be found behind the glovebox.