Half of the car blowing cold air

[Tomstud12]

Hi Guys,

I just got a 2013 Vw golf mk7 GT Model and for some reason when I turn up the heating only the passenger side is blowing hot air and driver side is cold.

It does not have dual climate control. What could be the problem?

 

[SRGTD]

I’d hazard a guess that it might be one of the following;

• a partially blocked heater matrix - not uncommon with VAG cars;

https://www.golfgtiforum.co.uk/index.php?topic=286951.0
https://www.seatcupra.net/forums/threads/heater-blowing-cold-on-passenger-side.449290/
https://www.pistonheads.com/gassing/topic.asp?t=1780683

• an issue with the heating controls that operate the airflow / air distribution flaps or the cables that connect the heating controls to the airflow / air distribution flaps.

 

[gixxerfool]

I’d hazard a guess that it might be one of the following;

• a partially blocked heater matrix - not uncommon with VAG cars;

https://www.golfgtiforum.co.uk/index.php?topic=286951.0
https://www.seatcupra.net/forums/threads/heater-blowing-cold-on-passenger-side.449290/
https://www.pistonheads.com/gassing/topic.asp?t=1780683

• an issue with the heating controls that operate the airflow / air distribution flaps or the cables that connect the heating controls to the airflow / air distribution flaps.

This is right on point. I would check coolant level first. If the level is good I would check condition. This is the most likely culprit. You MAY be able to back flush the core, but sometimes they’re just too clogged and need replacement.

 

[Tomstud12]

I’d hazard a guess that it might be one of the following;

• a partially blocked heater matrix - not uncommon with VAG cars;

https://www.golfgtiforum.co.uk/index.php?topic=286951.0
https://www.seatcupra.net/forums/threads/heater-blowing-cold-on-passenger-side.449290/
https://www.pistonheads.com/gassing/topic.asp?t=1780683

• an issue with the heating controls that operate the airflow / air distribution flaps or the cables that connect the heating controls to the airflow / air distribution flaps.

This is right on point. I would check coolant level first. If the level is good I would check condition. This is the most likely culprit. You MAY be able to back flush the core, but sometimes they’re just too clogged and need replacement.

Thanks guys for the reply and trying to help out.

I connected up the VCDS Vag-Com and i get a malfunction in the 08-Auto HVAC -- Status: Malfunction 0010

Could that be the problem? The fault it throws is

1 Fault Found:
1048838 - Functional Limitation due to Energy Management
B10CD 00 [008] - -

 

[gixxerfool]

Thanks guys for the reply and trying to help out.

I connected up the VCDS Vag-Com and i get a malfunction in the 08-Auto HVAC -- Status: Malfunction 0010

Could that be the problem? The fault it throws is

1 Fault Found:
1048838 - Functional Limitation due to Energy Management
B10CD 00 [008] - -

I do not think so, but it may be a symptom. I see you are in Ireland with an older Mk7, didn't these have a Silica bag breakage issue? This could lead to a clogged heater core.

 

[Tomstud12]

I do not think so, but it may be a symptom. I see you are in Ireland with an older Mk7, didn't these have a Silica bag breakage issue? This could lead to a clogged heater core.

I have cleared them faults and they seem to be gone now so that wasn't the issue I guess.

And yes I'm from Ireland with MK7 2013 GT Model 2.0 Liter

 

[gixxerfool]

I have cleared them faults and they seem to be gone now so that wasn't the issue I guess.

And yes I'm from Ireland with MK7 2013 GT Model 2.0 Liter

https://www.golfmk7.com/forums/index.php?threads/coolant-silica-bag-to-remove-or-not.361900/

Here is what I was referring to. May be worth a look

 

[Tomstud12]

https://www.golfmk7.com/forums/index.php?threads/coolant-silica-bag-to-remove-or-not.361900/

Here is what I was referring to. May be worth a look

I have checked the coolant and there doesn't seem to me anything. Also 3 Months ago the timing belt/ toothed belt was replaced with the water pump and so was the coolant so i presume the VW Dealer would've spotted that.

I also checked the pipes going into the heater core and they both seem to be really warm so the same hot coolant is coming out of the heater core so i presume it might not be blocked

 

[fazGtdlimestone]

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