Heater Blowing Cold Air

[2007GTI]

Thanks very much.

Garage already mentioned it’s a dash out job for matrix, so I guess to need to find a better garage.

[Finglonga]

Only need to remove the Glove box and it can be done from there. There was a video on Youtube showing how it was done. Last thing you want is the dash out as it can introduce all sorts of rattles.

[madstaff]

Finglonga is correct, no need to remove the dash, the heater matrix can be replaced without the dash having to be removed.

[2007GTI]

Thanks all.

An independent specialist VW garage has quoted me £1100 inc vat for a labour and parts for a new heater matrix and heater support pump using genuine VW parts. I got the parts cost down a bit, still looking at £980.

Found this great video of how to do it...

https://www.youtube.com/watch?v=Yh8BwjJgkiI

I believe the matrix is either Valeo or Denso, available in UK from stealers for £366 inc vat or various sources for £200.

The heater support pump I believe is either Bosch and Pierburg, and around £70, or less from non VW sources.

I have found the parts on AutoDoc, much cheaper, but think they come from Germany, around £75 for matrix and £30 for pump.

So just thinking about if I want to tackle myself, anyone got any good parts sources recommendations?

cheers!

EDIT:

After some more digging, there is a Valeo official store on Amazon and the part is £75, bonkers!

https://www.amazon.co.uk/Valeo-715303-Heating/dp/B019IPPWZK/

It's £198 at Euros!

https://www.eurocarparts.com/p/valeo-heater-matrix-214440135

[Finglonga]

Just get the pump done first as that may fix it 100% without the need for a Matrix and the extra cost.

[2007GTI]

Thanks, I was thinking that, I found another video of someone doing it, seems straightforward.

However isn’t that pump meant for when you are parked with the engine off, I didn’t think it did much with the main heating system ?

[Finglonga]

With it not working it can obstruct the flow to the Matrix I was told. It is to cool the Turbo by circulating water but remember it is also designed to keep the heater working on stop start cars when the engine is off.

[2007GTI]

Thank, makes sense.

I fished the tea bag out yesterday and it wasn’t split, so hope it’s just the pump, not the matrix.

[2007GTI]

Mine was the heater support pump, matrix was fine.

However the Right temperatures flap positioning motor makes a noise and doesn’t direct the warm air to drivers side, so having that replaced next!

[2007GTI]

I had the right temperature flap motor replaced too today and reset with VCDS, has now finally solved my issue of no hot air, combined with the previous replaced heater support pump!