Sunblind stuck half up
 

When I got my A8 the passenger rear sunblind worked and the drivers didn't. When I got my car back from a garage who'd had it for 3 weeks fixing various things I noticed the drivers rear sunblind was half down. I pressed the button and nothing happened. I pressed the button for the passenger and nothing happened. I thought this was strange but couldn't be bothered telling the garage as I was glad to have the car back.

The other day I started the car and the drivers rear blind that was stuck half down suddenly went up and back to its position of being stuck half down. I went into the back and pressed the button for drivers rear and it went up and down but to its half position. The passenger rear also now works.

So it's strange that the drivers rear never worked but suddenly went to its half position, stopped working and started working again.

I've tried forcing it back in the door whilst it goes down but it won't budge.

Anyone experienced this wierd issue before?

Just to add you don't need to go into the back to operate the blinds, just do them from the driver's window switches (long press)

Thanks, didn't know that. I presume it would be the switches for the rear windows?

Yep the switches for the rear windows. With the blind up, the first press will drop the blind and second press the window. With blind down and window up, a long press up will pull the blind up

Do you have access to VCDS? If so, it might be worth trying to disable the electric blind option for the drivers rear door, recycle the ignition, and then re-enable it again, in the hope that the electronics 'reset' the blind position.

I'm saying this based on it being with a garage for three weeks, and maybe during that time the battery was disconnected, or the car was jump started. Some weeks ago, my S8 was sitting idle for weeks outside and it wouldn't start. I got it jump started, but in the process, it played havoc with the MMI, with several functions disappearing completely. One was the visual when changing the temperature. Started it a day or so later and functions were back again. This sounds like the odd behaviour from the blinds.

If you're familiar with VCDS, go into module 72 (Door, Rear Right), and then into Coding, and you'll get the following screen. Make a note of the highlighted number ('0032623' in my case). Subtract 128 from your number, and then click 'Do It!'. After that, exit out of VCDS, re-cycle the ignition, and then go back into VCDS. You'll need to check and clear the Error Codes as you'll have one for the electric blind. Go back into Coding and change the number to the original number.

http://forum.a8parts.co.uk/attachmen...1&d=1548694038

Tried it earlier, pretty cool feature! Thanks for that!

I don't currently have access to vcds but am thinking it would be wise to purchase.

Thanks for taking the time to provide a detailed write up, I'll look into getting vcds and of course post up the results with hopefully a resolution.

Hey you don't happened to have this info for the d4? Currently looking to retrofit rear blinds but having trouble finding how to code my door modules.

Afraid not. However, it should be along the same lines. I suspect with the D4 that within VCDS, it will have 'Long Coding'. Essentially, instead of adding up a list of numbers based on what is fitted, there is a series of tick boxes for each of the options. You just tick/untick the relevant option(s) and save it.

Since you're retrofitting them, you will need to code other modules as well. Based on what I did on the D3, in addition to the two rear doors, you will also have to code in the Driver's Door (42), Central Convenience (46) and Roof Electronics (38). The numbers in brackets refer to the relevant module address, but with the added complexity in the D4, there may be other modules involved.

If you check the following thread, I mention what the relevant coding is for each of the modules in the D3, which should give you an idea of what to look for in the D4:

https://forum.a8parts.co.uk/showthread.php?p=151305