Noor,
have not come across this before...
apart from checking all the fuses, you could try a battery disconnect,
I don't know if this will help, and you will also need to get the system to carry out some self-learning operations once the battery is reconected to ensure certain devices are recognized by the system again, so you may want to have it checked out properly, just a thought...
Enzo.
Once you reconnect the battery negative terminal,
Throttle self-learning
Set the ignition switch to ON (KEY ON) and wait at least 15 seconds.
start the engine and let it idle for about 15 seconds.
Central Door Locking
Perform a door LOCK /UNLOCK operation with the remote control
SUNROOF:
Sunroof closed and key ON
Rotate the selector switch fully to the maximum tilting position
press the selector switch and, keeping it pressed, wait for the sunroof to lock mechanically
release the selector switch
within 5 sec. press the selector switch again and keep it pressed
after a few seconds the sunroof will start an automatic cycle (keep the selector switch pressed)
at the end of the movement, the initialization is complete
release the selector switch
IT Node (NIT) and CLOCK:
When the NIT is switched on, the NIT code must be entered:
Using the knob on the right, enter the four-digit (radio) code which will enable you to unlock the navigator.
Others
You may also need to adjust the time, date, and info shown on the instrument panel