Mk3 Leon FR 2.0l Diesel heating stopped working!!

[W44DUP]

Hi everyone! I recently had an issue where my heating cut out as I was driving along. I checked my coolant and it was low so I topped it up. I read somewhere on here about the heat exchanger (behind the dashboard) becoming blocked up so i took it out and cleared it out. Once back together my heating worked but not quite 100%!

Now one to two weeks later I am stuck with no heating again and I have also noticed that I must have a coolant leak as I keep having to top up the coolant reservoir. Does anyone have any suggestions or has anyone had a similar issue before now?
Kind regards,
joe

 

[monkeyboy123987]

How did you take the matrix out? Did you disassemble the dash?

 

[Walone]

How did you take the matrix out? Did you disassemble the dash?

This is an extract from a post by 'Scott_FR' on 18/10/16, under 'Aircon and Heater doesn't work;-

And now for the interesting bit of info for anyone wanting to tackle this themselves...

When refitting, I realised that I really didn't need to pull all that crap out to get to it. You can literally get it out by:
Draining coolant
Removing:
2x heater matrix hoses in the bulkhead
1x Torx screw on 'skirt' under the centre console
1x Torx screw on the lower pipe clip
1x Torx screw behind the glovebox (just flip it down as you would for a pollen filter change) to remove the air duct for more access room
2x Torx screws for the flap holding the matrix in place

And that is literally it! On reflection, I honestly believe the draining, removing/refitting of the matrix and filling back up with fluid could be done in under 2 hours. And that is by me - a ham-fisted DIY'er. How these garages have taken days and even weeks to do this job, is beyond me!

This was a few weeks ago now, and glad to report, it's working like a dream. It's maybe not 100%, but it's good enough for now. And it's a job I now know I can tackle easily, and quickly! Will probably give it another go, leaving the dishwasher tablet and boiling water in the matrix for longer next time.