P38 1999 2.5 Dash / Console lights

Hi I have the above vehicle. The ride height indicator on the center dash has stopped working (the 3 red dots) also the orange RR with the arrow on dash next to the warning messages has stopped working. At the same time the heater has stopped working and all the lights have gone out.

The light for the Hazzards work and the fog light so its a little strange. I have had the kick plate off and sprayed the connectors in the white blocks with WD40 as one was a little green ! However this hasn't appeared to have fixed anything. I find it odd to be just bulbs as its all gone at the same time. The suspension still goes up and down fine tho.
Any Ideas please. Thank you. Ps you will need to spell it out in laymans terms im a girl !

Well forst thing....WD40 is not an electrical contact cleaner....unless it is part of their specialist range!!

You're saying all the dash lights have gone out? Have you tried the dimmer switch to brighten them all up again? Left hand stalk, little lever on top.

WD40 is a water repellent not a contact cleaner and may make things worse. Aeroclene 50 or Servisol contact icleaner is needed after first scrubbing off the corrosion as far as possible.