Heater Controls S3

[mowog]

With the cooler weather on the way it's time I tried to unsieze the heater control sliders.

Top one (cabin/demist) is OK but there is only slight movement in the lower (hot/cold) one. Either way there is no hot air coming into the car.

Anyone had a go at this? Do you need to attack it from both ends - i.e. valve in engine bay and also get behind the heater control unit to the back of the sliders.

Many thanks
Darren

[Podie]

Valve in the engione bay needs WD40... on the inside, get some silicon spray (from Halfords in a big yellow spray can).

Smooth as the proverbial infants arse...

As with all these things, the trick is to use them...