Central locking ?

Hello! in my Meriva doesn't work the central locking with the fob, i change the battery and nothing, i sprayed some WD-40 into the ignition barrel and clean the key grove as i read in your comments and nothing, the most difficult thing is open the fuel top, also the Radio go off by itself even when the car is off and locked, or sometimes while you are driving.

In another hand the light of the panel are not working when i turn on the headlight.

I checked all Fuses in the second driver place and are OK

Could you please give any advise?