strangely my rear heater on the window worked monday and for the last year with a light on the switch, but for the last 2 days when -2 at 6am on the way to work, nothing

scanned with OBD11 and no fault.

under long coding DD, says heated rear window installed.

had 4 faults, all cleared, but still no luck

 

ideas?

Hell James, 

Check for fractured wires in flexible harness twixt body and tailgate. Always aggravated by low temperatures affecting flexibility of wires.

If these are OK, you need to look for breaks in the element - having tested you have 12volts at the connector onto the element. 
Kind regards,

Gareth. 

Kind regards,

Gareth. 

 

so I have looked at history and had a green tick on Aircon. but on my mmi and back of car is no vents , or controls. unticked and restarted and light back on

‘Fancy’ (potential trouble facility) MMI. What on earth was wrong with just pressing a button if you wanted to switch the HRW on, without ticks on screen? 

yep mine are all greyed out on my mmi. strange set up, but working