No hot water getting into the heating system? What can it be

[DJM1982]

As above,
Heating isn't working. The motors have been checked and there is one that needs replacing, but the real problems now seems to be that there is no hot water into the heating system.
Has anyone got any ideas what this can be?? Help needed fast

 

[Welly]

Possibly a gummed up heater matrix, or most likely an air lock in the coolant system....

 

[DJM1982]

how do you cure the air lock then?

 

[unikarl]

Bleed the system as you would your central heating at home. Run the car, let the engine get up to temperature and then open up the radiator valve to let free any air pockets.

 

[RallyX]

Could also be a faulty thermostat.

 

[DJM1982]

I think the garage has ordered a new thermostat. Looks likely to be a big bill though.

 

[AudiSport]

Thermostat. Or Head Gasket.