The Heated Mirror Relay is part of the car electrics system. We have 3 associated problem symptoms connected to it.
The wing mirrors no longer de-mist like they used to, the heating element that clears the central part of the mirror don't seem to be working.
The heated mirrors don't seem to fully clear the mist from the wing mirrors, it only seems to clear a small section from the mirror.
The heated mirrors don't seem to heat up and clear the mist and condensation like they did before.