Rear De-mister fault finding

  1. #1
    Hi all,

    Since buying my VTR last year the rear de-mister has never worked. As my PAS and blowers were intermittently cutting out I thought it may be down to that, so I did the fix as detailed on these forums. Still no joy, all fuses are ok, I checked them again last night to confirm none had blown after the PAS and blower fix.

    I can’t hear any relays click in when I push the button either. However, something that is a little bizarre is that very occasionally I can hear a relay clicking in and out intermittently. It actually sounds like an indicator but the indicators work perfectly.

    The connectors on the back window are on and i've also cleaned the contacts. I've also removed the rubber int he top corner to inspect the wiring, all looks perfectly normal.

    I think the relay could be knackered but I’m open to suggestions. Could someone also tell me which relay it is?

    Many thanks,
    Andy.
  2. #2
    Forgot to mention that I have a fob for the central locking. The central locking plays up quite regularly in that I will push the button to lock the car and it wont lock, but it will set the alarm!

    Fitted a brand new battery last Wednesday too.
  3. #3
    Take each spade connector off,each side then put the heated rear window on,then test for current on both connectors.Btw i`ve never heard a relay kick in when I use my demister.
  4. #4
    Ok, should I be looking for 12V there or would it be less?