Disabling remote-control units
Should a remote-control/key unit be lost, it is possible to disable it using the diagnostic interface.
First, the CAS Car Access System will need to read out data from all of the remaining remote-control/key units to determine which unit has been lost. It determines which remote key is missing based on the remote key numbers that are still present. The selected remote control/key unit can be disabled using the "Disable/enable key" diagnostic service.
Should the remote-control/key unit be discovered again at a later date, it can be enabled again using the same process.