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Golf mk7 / Re: Hot air blowing only from passenger vent issue
« Last post by 2007GTI on 27 November 2025, 22:03 »
Thanks, that is the only likely culprit left, so will probably end if changing it.

Quote from: SteveAWOL on 27 November 2025, 19:43
Having a similar issue with my GTI whereby the passenger side vents can blow out nice hot air but all those on driver’s side won’t get any more than tepid.

Tried doing the A/C reset trick but that didn’t make any difference.

Took it to dealership who said that heater matrix needs replacing but that wouldn’t be covered by the All-In extended warranty; unlike the thermostat housing which got replaced a few years ago when there was a coolant leak and they removed the dreaded silica bag.
2
Golf mk7 / Re: Coolant silicon bag
« Last post by smig on 27 November 2025, 21:36 »
This suggests its OK to mix https://www.coxmotorparts.co.uk/product/vw-shop/volkswagen-g12-evo-coolant-1l-5l/?srsltid=AfmBOoqH709q94Gn0CZBHTBf7hQKJufoRWC_JPFGuqR_ANurPjJ-6r9z
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Golf mk6 / Re: Any ideas what this could be please?
« Last post by Norwichdaz on 27 November 2025, 21:25 »
Yes bud, ill see if the blow sound is still there on decel id imagine it is tbf...then maybe look into DV..

If did do that oem for same or a different dv? I mean its not like it tissssh when changes gear atm, dsg
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Golf mk7 / Coolant silicon bag
« Last post by Deddi on 27 November 2025, 20:49 »
I have had a good read of the posts on this issue and have decided to take the bag out.

I just want to make sure I have this right before I do it please,:

Looks like I have G13 in my car now (2016 GTI) according to what I have read. Also seems that I need a different version of coolant once the bag is removed - is it G12 evo?  So when I have removed the bag, is it ok to put some of the G12 evo in to top up the system, is mixing coolants ok? Then at some point in the future, flush the whole thing and fill with just G12 evo?

Thanks
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Golf mk7 / Re: Hot air blowing only from passenger vent issue
« Last post by SteveAWOL on 27 November 2025, 19:43 »
Having a similar issue with my GTI whereby the passenger side vents can blow out nice hot air but all those on driver’s side won’t get any more than tepid.

Tried doing the A/C reset trick but that didn’t make any difference.

Took it to dealership who said that heater matrix needs replacing but that wouldn’t be covered by the All-In extended warranty; unlike the thermostat housing which got replaced a few years ago when there was a coolant leak and they removed the dreaded silica bag.
6
Golf mk6 / Re: Any ideas what this could be please?
« Last post by Nino on 27 November 2025, 18:46 »
Sounds like I was right about the PCV failing then.
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Golf mk6 / Re: Any ideas what this could be please?
« Last post by Norwichdaz on 27 November 2025, 17:45 »
Picking it up tomorrow now as bit late and city traffic is a joke lol..

He did say on the phone tho that replacing the pcv today thats there's a hell of a lot more suction on oil cap etc when try take it off..so thats a plus and he says the misfires have gone.

As I said tho not sure if the blow/leak noise when release pedal has gone or not yet tho.
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Golf mk8 / Re: DSG Gearbox oil change.
« Last post by Beebopper on 27 November 2025, 17:43 »
Mines 4 years old, 15k miles. I can’t see it ever having the gearbox oil changed. I might ask them to do it in the next service at 5 years, I’m not as OCD as some but 80k regardless of age seems daft. Also going to get the air con service done at 5years cos I’m fed up of them asking constantly about that too  :grin:
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Golf mk8 / Re: DSG Gearbox oil change.
« Last post by Adam T7 on 27 November 2025, 17:27 »
I’ve had mine done every 3 years, irrespective of the low mileage.
Also OCD (oil & filter every 6 months etc)
A DSG fluid change is relatively cheap vs. a new box (just my view)
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Golf mk6 / Re: Any ideas what this could be please?
« Last post by Norwichdaz on 27 November 2025, 14:35 »
Ah ok thank u... nice chunk of change then, after a few hundred when pick car up today, mot in January too so will see how that goes too lol..

Yeh do doesnt seem toooo bad tbh...I see some people put a forge on, then lots saying to put original/oem dv...
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