2018 Q5 sunroof seized? Won’t open more than 2 inches!

[JQ5]

Hi All. 
this started a week ago. The sunroof blind works fine. No issues at all. 
The sunroof does not open much - the motor sounds okay, it opens about 2 inches - upto the point where the wind deflector should start to rise up - then clunks and stops. It closes okay. 
seems to not be the motor as that doesn’t sound to be struggling at all.

Lots of squeaks like it’s dry then a clunk and it stops dead, but I can’t get to the rail/ track to grease it. 

Does anybody know how to manually wind it open, on a 2018 MK2 FY model - so I can see the tracks and lube them up 🙂

[JQ5]

I’m pretty sure the lube had dried up on the rails or the mechanism that lifts the sunroof up is seized. 
Edit: I’ve seen videos on YouTube of older Audi’s where the cabin light/ sunroof control console can be dropped out of the roof - revealing an Allan key or Hex key fitting - to manually control the sunroof and wind it open or closed depending on where it was stuck. 
I can’t see any videos or anything instructions online, on how to do it in a Gen2/MK2 Q5?

[Steve Q]

Think this is a common issue. Think there could be an issue with the track. I'd recommend you speak to Audi. Or get a diagnostic check. 

you can reset it by removing the sunroof fuse from the fuse box. Remove the fuse panel with a plastic pry wedge then remove the fuse labeled C9 (sunroof) and then reinstall it. This resets the sunroof calibration. After you install the fuse again turn the switch for the sunroof to open then after it opens fully to turn the switch to close.

[JQ5]

Thanks Steve. 
I will give that a try in about 20 mins!

Thank you!

[JQ5]

This is 2nd generation so I’ll look for that fuse 

[JQ5]

[JQ5]

Pulled out the fuse, also recalibrated it by holding the close button for 20 seconds.
Both made no difference. 
 

i had used the sunroof a few days before the problem occurred, and had no issues with it before it fully seized. 
Can’t imagine the rail has failed - this happened during the 40 degree heatwave. 
 

 

[JQ5]

Okay. Used my OBDELEVEN module. 
Forgot I bought one for IOS as never used it! 

There are no issues detected with the sunroof, until I started the recalibration - by sliding the ‘slide to start’.
 

Then it then failed due to ‘safety issue’ it popped up in red the second it stopped dead after it had opened just 2 inches. 
 

So at least all the sensors etc are working correctly. Doesn’t mention anything about the motors or sensors. 

I think one of the arms that lifts the sunroof up and back has seized because the silicone dried up. Or something is caught in the track - so I’ll have a dig around with a cotton bud  - if I can fit it in the gap.

 

Edited August 14, 2022 by JQ5
Deleted duplicated pictures

[Magnet]

Hello Jay,

It sounds as if you are doing a grand job towards problem solving this, and (from the school of my bleeding obvious!) it seems it all boils down to something restricting it’s further movement, rather than a mechanism failure.  I’m sure you will discover what, but Sod’s law does point towards it being difficult to free something you can’t get at  because the roof doesn’t move enough to actually get at it! 
Good luck Jay.

Kind regards,

Gareth. 

[Steve Q]

You've done a fantastic amount of work. I do agree with Gareth, after ball your diagnostics I do think something is clearly stopping it. You might have to get it to a garage or audi for them to remove the sunroof. 

[JQ5]

I’m going to remove the sliding panel out of its track to visually inspect the rail it rides on. 
I believe there are 2 hex bolts at the back of the panel (which slides over the roof). 
 

I won’t be doing that until this 30 degree heat passes as I’m not wanting to melt. 
 

I’ll take some ‘how to’ pics as I do this home DIY 👍🏻🥃
 

[JQ5]

[Steve Q]

How are you getting on with this? 

[JQ5]

Hi. Sorry for late reply and no follow-up from me. 
I’ve had some personal issues to deal with. 
So, 

The latest is……

Using OBD11 the fault code for the control system of the sunroof says: CA B154354 which means Sunroof No basic setting. 
But when I look at the long code it shows as: 52 80 00 04 26 02, so there is a setting, but I can’t verify if it’s the correct setting and why the sunroof fails to recognise the coding.

I’ve attempted the recalibration and the standardisation (where OBD11 tries to reset the sunroof) and it still stops dead after opening 2 inches  

There is nothing in the way or stuck on the rails/ tracks and I’m stumped.

looks like I have to take it to an Audi or VW specialist…….

gutted I couldn’t fix it myself!
No idea what to do. 

Edited September 7, 2022 by JQ5
Duplicated pictures

[JQ5]

By the way. 
I added silicone grease as directed by the Audi sunroof YouTube vids and that made zero difference. 
The rails are fine, no evidence of any rub marks or anything in the rails/tracks. 
Nothing pops up about ‘pinch sensor’ when running the diagnostics during opening the sunroof. 
it’s just says ‘exiting due to safety issue’ 

and that it does not have the basic setting configured. 
 I have no what’s wrong 🤔

[Steve Q]

You've done a lot of the diagnostic work. I do wonder if it's a module issue or sensor issue then. 

[JQ5]

Update: I discovered that the rear of the sunroof has a tilt function - and that works 😀. 
The problem was the configuration of the CA Module - has to be reset by Audi technician.

£65 diagnostic check to tell me what I already knew 

£200 to reset the config/settings. 
 

Basically, daylight robbery. 

[Steve Q]

On 9/23/2022 at 11:33 PM, JQ5 said:

Update: I discovered that the rear of the sunroof has a tilt function - and that works 😀. 
The problem was the configuration of the CA Module - has to be reset by Audi technician.

£65 diagnostic check to tell me what I already knew 

£200 to reset the config/settings. 
 

Basically, daylight robbery. 

What rob dogs! Glad it's sorted now though.