How To Replace a Heater Matrix/core on an Audi A3 8V (2013-)
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- Опубліковано 14 жов 2024
- Vehicle: Audi A3/S3/RS3 8V (2013) RHD
Heater matrix/core replacement
If your vehicle has no or poor heat output from the heating system, the likely cause is a blocked heater matrix/heater core. This is a video I created documenting the process I used to rectify the issue.
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Very helpful video and certainly made the job easier on my 2017 A3. A couple of notes that might be useful to others after doing the job today. *I replaced the rubber o-rings with a repair kit 5Q0898400A from AUDI for £15 (includes the o-rings and new clamps. Admittedly I only wanted the new o-rings out of this set as the originals were definitely flattened off when I removed the pipes). **I found I needed to remove the passenger side centre console bracket as it limits movement of the lower heater matrix pipe (it's one 8mm nut to remove it). ***I removed the 4 10mm nuts at the rear of the console (instead of the 2 8mm) which means the whole rear assembly comes out instead of splitting the end off. ****I fitted a FEBI Bilstein unit (No. 108187) (about £90) and noticed that it has thicker water channels than the OE Valeo so hopefully less prone to clogging.
Thats great, glad it helped. Also some very useful information thanks for posting 👍
Absolutely spot on video! Clear and easy to follow, made the job a piece of cake. Little things like showing how each cable unfastens saved several minutes of fiddling about, possibly snapping some fittings and sore finger tips! Garage quoted thick end of £1000 to sort the heating out, did the whole job for under £75 (new matrix, interior trim removal tools and radio removal tools) and a couple hours time and now the heating working perfectly. Thanks very much for this video 👍
Thanks for the great tutorial,did mine today with ease ❤
Hi, excellent video really clear and helpful.
Have got to replace mine on my 2014 audi a3 , this video has given me the confidence to change it my self,as the garage quotes were very expensive to say the least. Many thanks Darren.😊
Legend for this video! Did this job on a mates car today, and went into it like I’d done it loads of times after watching this! 👌🏼👏👏
Thankyou very much....Saved me time looking for all the bolts and clips.....Great video 😁😁😁😁
Thanks for making this! Great video.
SUPER VIDEO
BUT JUST MAKES THE JOB HARDER DOING VIDEO N DOING THE JOB
BUT THANK
VERY INFORMATIVE VIDEO
THUMBS UP 👍
Thank you for making this video, you really helped us out 🙏
No worries! Glad it helped 👍🏻
Great video and good idea with the bottle. I wouldn't have thought of that 😁
Fair play that was a billiant video, very well explained 👍🏻
Thanks mate. Hope it helped 👍
A big thanks to JL Autos, I have changed the matrix and I now have full heat, can’t believe how easy it was using this video 😁.
The old heater was completely clogged.
The only thing I’m worried about is that I never changed the coolant, which I plan on doing at the weekend, will this now clog the new heater? Also can I just remove expansion cap and run car to remove any airlocks?
Thanks
Hi this was so helpful for me! Fixed my heater! How do you get rid of the airbag light that you said would go on if keys left in? My uncle didn’t listen and left them in so now have a warning light on!!
Hi! Glad it helped.
You will need a diagnostic machine to clear the fault entry from the airbag system. A local garage should be able to clear this for you, likely for a small fee.
Thank you! My uncle had one so cleared them for me! Again thank you for the video, saved me a lot of money😁but you made it look so easy🤣🤣
Really appreciate the video it seems straight forward with a bit of fetling but to some Audi specialists you need to be a trained astronaut and have a very large bank account lol thanks again bud
No worries. Happy it helped 👍🏻
Your video is very helpful thank you
In my a3 8v theres no ac coming out of the center vents, it should be the one behind the cluster right?
Did you have the problem of intermittent heat in and off, my a3 is very intermittent and I’ve flushed the core a couple of times to no avail, temp gauge can’t sometimes go up also? Thank you
Hi, the only symptom I had was a lack of heat output from the heaters initially. I did try and flush the cooling system and found the heating did come back at full heat for a short while but then went again. At this point I replaced the heater matrix.
However, if yours takes a long time to reach 90degrees or doesn't reach 90degrees then you could have a thermostat issue. The thermostat on the 2.0 TDi is under the inlet manifold on the passenger side of the engine. I did try and replace mine without removing the inlet but ended up removing it because the thermostat housing was seriously stuck on the O-ring.
@@jlautos5425sorry I meant to write the heating can go up sometimes over 90, and after it does this the matrix bangs as though it’s blocked, going to change the Matrix at the weekend and see if that sorts it. Thanks for the reply
Nice clear instructions👍🏻Where did you source the heater matrix from?
Thanks for the comment! 👍🏻
I got the replacement heater matrix from CarSpares LTD.
Though it is worth checking other parts factors also like EuroCar Parts & GSF as they can have some deals going on their sites.
Did you not fit new clips and O rings? Some folk say you have to, I guess it isn’t essential? I’m gonna be tackling this job and apparently my valeo matrix doesn’t come with any clips or o rings
If you haven’t already started the matrix replacement then I would suggest it would be wise to order a set in advance.
However, this was my own car and I only realised about the seals after it was stripped down.
I took extra care when removing and installing the pipes and gave the o-rings a good check over before rebuilding and they were ok to reuse.
Done the job. Thanks mate for the video. Did yours take a while to bleed up afterwards? Mine is taking ages but I’m not using a vacuum
@@matthewking5193 Mine didn't take long at all mate, but I did clamp the heater matrix hoses in the engine bay so didn't drain the complete cooling system.
I would run it up to temp stationary with the cabin heaters on full, as soon as you get temperature in the cabin heaters you can turn them off as they will make the engine take longer to warm up. Then allow it to run until you can see/hear the radiator fan cut in. Then take it for a drive, take a couple litres of premixed coolant with you in a bottle just incase it purges some air out mid drive and needs a top up
@@jlautos5425hi mate thanks for getting back to me. Yes I did that in the end and it’s all good now. Many many thanks.
How long do you think it took in total mate
Hi mate, my blowers blow cold when idle/stationary. When driving they blow warm as they should. Coolant level is fine, do you think this could be the heater matrix? But why would it work when driving.
Just changed mine today bud your heater core is clogged with sludgy shit , replace and your heat will be new again never mind people saying it’s flaps or blend door the same exact symptoms u have I had and can confirm this fixed mine I also flushed mine and got a bit of heat but replacing this solved it all
Had mine replaced after no heat at all, now I’ve got hot air passenger side and not so warm on drivers side, any ideas
Hello nicely done .thanks 👍
I may have same problem on my Audi… (( how much does it cost to replace the matrix? Or how can I contact you about this?
How much would you charge for this service, also where are you based
Thanks
Did this the other day but have def not put it back together quite right as still losing a lot of fluid (and the carpet is very damp). Going to take it apart again tomorrow when I have time, and hope that replacing the o rings will help. Had a bit of bother getting the clamps sorted on the heater matrix pipes, anyone got any advice on sorting this?
I do now have heating but if I still have the loosing coolant problem, does anyone have advice on what might still be going wrong?
Did you manage to resolve this ? Would be very helpful to know.
Swapped my matrix out but now makes a slushing sound in the dash could it be airlocked
Does it usually do it just after first start up?
Sounds like you could have a slight air lock present. You can try taking it for a drive, allow the engine to reach operating temperature , heaters set to hot and then keep the engine rpm high. (Around 3,000rpm for a diesel or around 4,000rpm for a petrol).
The increased engine speed makes the water pump spin faster and hence push the coolant around faster. This could dislodge the air lock. You would then need to wait until it has cooled down before topping up your coolant.
Yes usually on start up but continues to slush heater on the left is boiling the drivers is hot but not as hot as the passenger. Il try the high Revs thanks. Are these self bleeding
@@chriswright9720did u manage to fix this?
I have gone to 2 shops because my ac is not blowing cold air and leaking refrigerant (not coolant) on my s3. They both have said it needs a new heater core. This just doesn't make sense to me because the heater core holds coolant not refrigerant.
Hi
Reading your description I would agree that it won’t be the heater core (as you correctly say, it holds coolant not refrigerant)
It could be the Evaporator which is next to the heater core, though in my experience they rarely fail. Have you had a heater core replacement recently and maybe the evaporator was damaged during this?
The 8V chassis are very common for the AC condensers to leak, I have had to replace mine because of this. The condenser is fitted at the front of the vehicle near the radiator.
Did anyone have vapours of coolant being blown in the cabin through the air vents?
Before or after the matrix was replaced?
@@jlautos5425 Before. There is a clear problem there (probably a leak), as my coolant level is constantly getting low and coilant vapours are blown through the air vents, but my heating works well and there is no moisture on the carpets...
JCT600 had replaced my cambelt and water pump and now my heater matrix is blocked now. They are trying to charge £1100 for this to be sorted….
Where are you based and how much would it cost for you to replace my heater matrix on audi s3
Funny you should mention this as I've just paid Audi for a cambelt and pump replacement and a week later my heater matrix gets blocked 🫣🤔
We’ll explain ******