Heater Blowing Cold Air

[Finglonga]

Started my car a couple of days ago to defrost it and it was bowing luke warm at best so did a VCDS scan. Sods law now is that my "Heater support pump" is showing open circuit and I need to have a look at it. Never happens in the Summer does it.

[Finglonga]

Aux pump replaced and old one was completely dead but still only luke warm air so Heater Matrix replaced as well and it is now like a furnace.

[Jake1]

Hello all,

thought I'd revive this thread, as I have the same issue.

I tried a flap reset and hot air only comes out on the vent nearest the passenger door. If I close the vent, some heat come to the middle 2 vents, but none to the drivers side.

Would this be blocked heater matrix perhaps?

Did you ever manage to resolve this mate?

[2007GTI]

That's so funny, as no I did not, then forgot about it, then today it's not blowing hot again.

I found this thread via google, forgot I had even asked this question, and did a flap reset and it no better.

So will need to investigate further!

[2007GTI]

I scanned with OBDEleven, two faults!



any advice guys?

[Finglonga]

That is the same code I had P16C1 00 - Open Circuit and replacing the Aux pump fixed it.

When you turn the car off can you hear the pump running still, should run for around 5mnuites after shutdown to cool the Turbo. I noticed mine was silent when shut off and that is why I did  VCDS scan.

[2007GTI]

Thanks @Finglonga.

I haven't heard that, but I will check.

Did you have also not hot air in the car too?

Can I ask how much it cost to get to changed, Stealer or independent garage?

Do you know the exact part they replaced?

Looking back I see you had heater matrix replaced too, was that pricey?

Cheers!

That is the same code I had P16C1 00 - Open Circuit and replacing the Aux pump fixed it.

When you turn the car off can you hear the pump running still, should run for around 5mnuites after shutdown to cool the Turbo. I noticed mine was silent when shut off and that is why I did  VCDS scan.

[2007GTI]

Dupe post

[Pkempster]

I noticed a couple of weeks ago that the heater was blowing colder air coming from the right centre and drivers side vents. From posts on the forum I started doing the climate flap reset procedure everytime I was driving the car and it seems to have worked, the vents are giving more heat now.
Might be worth repeating the reset over and over more times.

[Finglonga]

Thanks @Finglonga.

I haven't heard that, but I will check.

Did you have also not hot air in the car too?

Can I ask how much it cost to get to changed, Stealer or independent garage?

Do you know the exact part they replaced?
.

Went to independent as MUCH cheaper, he uses only Genuine VW parts, the heater was blowing cold. Replaced the pump and it was slightly better. The heater Matrix was then replaced and it was like a furnace. Can be replaced without taking the dash out as well if you use a good mechanic.

 I would check with the VIN for the exact part as sometimes VW revise the parts. As for the price,not a clue sorry.