55 Plate Signum 1.9CDTi 120

As stated, the infamous 'Check Safeguard' message started appearing occasionally and now everytime I it's started but.......................

I noticed recently that the interior light was not staying on when the NSR door was opened and the electric window would not close/open fully unless you held the switch. Now it (the window) wont open at all using the door switch or front switch BUT the lights are illuminated within the switch albeit more dimly than the others!

Or possible coincidence, the tailgate switch to pen it, did play up a bit but is seemingly working fine????

Any clues or is it a TECH2 job to suss????

Many thanks in advance, Si