Summarizing the install here to hopefully help someone do this in the future on their Superb 3.
The entire installation is based on @ApertureS' wonderful and informative guide for the Octavia. I will try to fill in with some details that may be useful for those who like like to have everything planned out in advance such as myself.
I've listed the required parts just above, quote below:
Motivation:
- I initially bought a steering wheel off an Octavia 4 and I discovered the install would require a new airbag and a special LIN adapter for the scroll wheels to work so after having been through that hurdle, I decided to tone down my expectations and just stick to a wheel matching this car's generation to ensure minimum compatibility issues. Additionally, I had a hard time finding a heated steering wheel which was also flat bottom, had white stitching, had DSG paddles and was not in a terrible state so I splurged on the new OEM one. This one also allowed me to reuse my airbag as Skoda seems to have changed the models at some point (fortunately, being an early 2019 model, I had the latest one (which is flatter on the top)
- I found a Superb 3 owner online who had the heated steering wheel equipped from the factory so I asked him to check what clock spring he had. Combining that information with what ApertureS mentioned in his guide, I decided to go with the one ending in 569C as it was proof enough they would work.
- Got the Kufatec adapter to make things a little easier.
Process:
1.VCDS backup
Take a VCDS backup of the coding on your Address 08: Auto HVAC and your Address 16: Steering wheel and do a full auto scan to ensure you know what errors are new and which ones are old.
My old steering wheel coding was 6014.
2. The power feed
I have replaced the clock spring before on my old O2 so I was quite confident that part of the installation would be easy so I focused my attention on how to wire the new circuit.
I only started taking things apart after having managed to plug the terminal in the fuse box as I knew this would be the hardest part due to very tight spacing behind the fuse box.
Inspecting the fuse box I found a few that had battery feeds that led nowhere (missing equipment of some sort I suppose) one of which being fuse 47, normally used for the rear wiper, which I don't have. The fuse was ignition switched and led nowhere so I figured I stick the Kufatec terminal in there.
I tried removing or dislocating the fusebox slightly with no luck... I found a guide on how to do it on a seat but it seems it is further secured on the Superb and moreover it's wrapped around more plastics and bolts that were in the way... the fuse box would not budge so the only way in was through the back... Thankfully, Purpletom had a really good tip to help with finding the right way in from the back of the fusebox - many thanks @Purpletom for this once again - it did ease things up a lot!
The ground wire got hooked up to one of the securing bolts around the fuse box and the new circuit was secured with a 10A fuse (similarly to how Skoda does it in the factory - 10A fuse on the top right of the fuse box on port 2) I got the info off a guy who had a factory fitted hsw.
3. Clock spring and new wheel
Removing the old bits:
- turn the wheel 90 degrees right, pop the airbag from the back.
- turn the wheel 90 degrees left, pop the second latch off and free the airbag.
- straighten the steering wheel and disconnect the battery - give it a few minutes for safety.
- lift the airbag, lift the white tab on the yellow plug and pop it out.
- push the black tab on the left that connects to the steering wheel controls and push that out as well. Set the airbag aside.
- Check the size of the securing bolt.... To my surprise mine was a 8.8.... I only had a 10.2 that would fit my old Octavia... Don't ask how I found the right size... This is something you can easily check before the installation by just popping out the airbag without disconnecting it.
- Unscrew the bolt and remove the steering wheel.
- Release the steering wheel adjustment and pull down as far as it goes then towards you as far as it comes.
- Use plastic prying tools to release the top plastic cover.
- Unscrew the 2 bolts securing the bottom plastic trim that are in plain sight and the 3rd one on the bottom side of the steering column
- The clock spring is secured by 3 small torx bits, remove them.
- Unplug the stalk connectors , airbag and steering wheel controls form the clock spring and remove the thing completely. (try not to spin it around if you plan to sell it onwards after this)
Refitting the new parts:
- Put the new clock spring in place and secure it with the 3 torx screws.
- Connect the Kufatec T16 plug to the car's T16 plug then the Kufatec T14 plug to the clock spring
- Connect the rest of the plugs to the clock spring and release by removing the red securing tab
- place the bottom plastic trim over the steering column agian carefully, be mindful of the start button and how the plastics fit together and secure it with the 3 screws.
- push the top plastic trim back into place nicely (first slide it in the back then click it down in place.
- Place the new steering wheel on top, make sure the line markers align and screw the nut back in to secure the entire thing together.
- connect the airbag to the steering wheel controls on the left.
- connect the airbag to the main slipring and push the white tab back in.
- push the airbag back into its place.
At this point you are ready to reconnect the battery and enjoy a marvelous sight of errors, beeps and flaws.
Code the new steering wheel according to this:
Code your new steering wheel controller the same way as your old one.
Clear all errors and see which ones come back. In my case it was the start/stop system error (with no VCDS error) and ACC error every time I push the acc stalk (with one error in the Address 13: Auto Dist. Reg) Give the car a few hours of sleep (I gave it 5 hours or so) Apparently, the ACC module goes in some sort of sleep a few hours after the car shuts down... The long hours of sleep will let the car also figure out you installed the same battery and not a new one and your start/stop system error will also disappear.
Take it for a drive and test all the systems that presented errors after the retrofit:
- Park assist
- Lane assist
- Front assist
- ACC
- Hill assist
- Start/Stop
- and of course... the heated steering wheel.
Park it up agian, clear the errors wit VCDS again and at this point, you should have the same amount of errors as you had before the retrofit.
I hope I covered everything here - the forum won't allow for more than 10MB of pics so I will stick to a single picture upload.
Happy to help people in the future with details I may have missed when you find this relic post.