No heat in car cabin!

[Trace7675]

Hi,

I wonder if anyone can help me, my car went in the garage last week for having no heat inside the car, I have had a new water pump cam belt and thermostat and still the car has no heat idling, but a slight bit of driving, the car has been brought back and none the wiser. Can someone offer some help and advice before I go insane, it’s costing me a fortune.  It a3 cab 1.9tdi. Thank you x 

[Steve Q]

Issue with the heater matrix being blocked? 

Issue with the control module? 

[Trace7675]

Hi Steve,

is this what it is? Every garage I have tried to get to fix it either don’t work on Audi or saying is 100s to fix, I have just paid out 500 for this so far and still my car is parked up as Its to cold to drive. Xx

[cliffcoggin]

Hundreds of pounds sound about normal for new heater matrix. Look up similar threads on this forum for more detail.

[Trace7675]

I haven’t had a heat matrix done I have had a water pump, cam belt and thermostat done, and the car is still cold. 

[spartacus 68]

This is on 2013 model, but assume procedure will be the same for 2009 model. Tools wise, socket set, extension bar for 3/8” ratchet for 8/10mm nuts or long handled Torx driver in glove box, special tools to remove media centre if there’s one in the glove box, new G12+ coolant, anti-marring trim tools for centre console.

If it were me, I’d remove both front seats for better access. There will be cables underneath for airbags to remove.

VCDS to clear any error codes.

Quite a good video. Sounds like Danny Dyer working out of Mitchell’s Garage!

[cliffcoggin]

7 hours ago, Trace7675 said:

I haven’t had a heat matrix done I have had a water pump, cam belt and thermostat done, and the car is still cold. 

I realise that. I was agreeing with Steve Q's suggestion that the heater matrix might be blocked, and commenting on the likely cost of renewing it.

The water pump and cam belt would never have cured lack of heat in the cabin, though they may well have been necessary for other reasons. Count yourself lucky the job was so cheap at only £500; it would have been half as much again at most places.