Heated Rear Window Relay

What is a Heated Rear Window Relay?

The Heated Rear Window Relay is part of the car electrics system. We have 2 associated problem symptoms connected to it.

What problems can be caused by this part?

Rear screen does not demist

The heated rear screen doesn't clear properly even when the heating has been on for a while. The heated screen can start to clear but doesn't fully clear the mist.

Heater rear windscreen very slow to work

The heated rear windscreen takes a very long time to start clearing the screen, it used to be clear within a few minutes.

We have 8 owner problems that mention the Heated Rear Window Relay