I'm having a problem with the long range use of my central locking key.

I have a 2003 E220 CDi with the three button key (locking, unlocking and boot release). Everything had been running great. The range from which I could use the key was great, I could unlock from inside the house with the car parked up to 50 feet away.

Now the key only works with the short range IR signal with the key held at IR receiver in the driver's door handle. All the functions of the remote are still there (locking, boot, windows etc) but I have to operate the key from no more than 2 feet away.

I have had some work done to the car including the fitting of two sunvisor screens, playstation and DVB Digital TV player into the car. However, everything worked for a good few weeks after. Though I had noticed that on the dome lighting in the rear, only the map lights work. The courtesy lights and ambience lighing do not. However, I do not know if this is coincidental.

Please help.

 

Hi,
Have you replaced the remote key batteries?
If not suggest you do.
Stuart