My car is a 2018 Fabia Monte Carlo 81TSI

These buttons on the heater/aircon controls are not working and the lights have gone out.

 

Any ideas on what is broken here or how to fix it would be great please

Edited 11 June, 20241 yr by AWood
Spelling error

Hi, welcome.

 

I don't know but if the photo you put up is of your heater/aircon control then it looks a bit odd as one of the buttons not lit has it action displayed on the screen.  To me if the buttons are not lit in might signify their actions are unavailable for perhaps reasons the mighty computer gods have but I don't know, there is something about humidity and fresh air, have looking and read of your Owner's Manual as that is a good way of saving time, hassle and money especially with unnecessary visits to Dealerships, mechanics and auto-electricians.

 

Falling that if you can find any reset procedure for the heater/aircon, there is for older models but the computer gods' programs are even more complex now and the German marques including VW have always luved over-complex computer stuff.

 

A starting point diagnostic tool (doesn't necessarily give the end point solution as many expect, it's another diagnostic tool to be interpreted) is a VW 2018 appropriate scan tool.  The user needs to ensure the scan tool program is up to date for the 2018 VW model, many are too lazy to bother or haven't paid for the service and less capable scan tools can give erroneous readings and results.

 

If the problem isn't from the system's normal operation and you don't have access to a good level VW appropriate scan tool then there is something I'd try as it's very low cost and very easy but others deride it and can't believe it'll make any difference so most don't try it and if it's not a computer brain-fart then it won't make any odds but I see no harm trying.

 

Edited 11 June, 20241 yr by nta16
ETA

Welcome.

 

Sorry no idea.

?

Is it just the same if you press AUTO? 

 

@6 years old the AC was due a service anyway. Or has it had any attention already?

Thank you for the reply

All buttons were working a week ago before I had the headunit looked at as it has failed.

I took it back to the mechanic as the other 3 buttons were not working and left with these 3 working, I'm not sure what they done.

It's like there is no spring under these buttons and they are further in than the ones that function when pressed.

Edited 11 June, 20241 yr by AWood

1 hour ago, AWood said:

Thank you for the reply

All buttons were working a week ago before I had the headunit looked at as it has failed.

I took it back to the mechanic as the other 3 buttons were not working and left with these 3 working, I'm not sure what they done.

It's like there is no spring under these buttons and they are further in than the ones that function when pressed.

Throw it back to the mechanic with the words "You broke it; you fix it! Where's my free courtesy car while you're doing so?"

23 hours ago, AWood said:

All buttons were working a week ago before I had the headunit looked at as it has failed.

I took it back to the mechanic as the other 3 buttons were not working and left with these 3 working, I'm not sure what they done.

It's like there is no spring under these buttons and they are further in than the ones that function when pressed.

That's a whole slab of additional info, that could be mechanical, electric, electronic or any permeation or combination, obviously it hasn't been repaired properly perhaps including any programming required @pab567 may well know and able to offer alternative.

 

I believe buying a second hand panel and replacing it by yourself is the cheapest option. It's easy and takes 5 minutes.

A late update on this post.

I did buy a used replacement unit only cheaply and easily installed it.

No issues since.

Thank you Pab567