steevs

Interesting, my battery is less than 2 years old AGM Varta 70ah. I've tested (and had tested for my own sanity) and shows 2/3rd of it's original cranking capacity but still charges correctly. I have measured it dropping to less than 10v during cranking but the car modules show a voltage of 11v when the steering switch module logs an error. Keep me posted on if this stays resolved, a bit dangerous the fact that the horn fails if battery voltage drops though.

Following this up with a bit more info, today got a P056800 on the engine module. Additionally when checking the ACC operating lever signal, it is stuck at 1011000 until restart. Will try find someone nearby at the weekend for a proper Odis scan.

Just posting my experience on this, the noise was caused by the top speaker grille on mine, I also had noise from pretty much every decorative trim though the speaker grille one was the hardest to track down and the most annoying under hard acceleration. All of my noise issues were solved by placing some fabric tape/wiring loom tape around all the plastic pieces that are used to click into the dashboard (they are obvious) But I've learned: as you fix one squeak, 2 extra ones appear until you've torn apart the frontend of the car.

I'll need to try find somewhere that will give an Odis printout, as for obdeleven tweaks; I reverted fully back to standard coding and adaptions but the problem still persists. It seems to be voltage related, I noticed there's another discussion about this exact issue going on over on Reddit. I am also rarely getting start/stop to happen and have seen a few function restriction due to low voltage codes being stored. Battery is less than 2 years old and alternator has been tested and working well but it drops to under 12v overnight.

Hi all, 2020 Superb SportLine Plus I've recently been experiencing an issue where in the morning, specifically on colder days - my horn and ACC will stop working. I've checked error codes and it is simply showing "databus error received" There is no meaningful errors being stored. Oddly enough, if I restart the car, the issue disappears until the following day. Funnily enough, it only started occuring a month after my warranty expired... I've looked for any parts revisions on the steering column module and clock spring and apparently my specific part number (5Q1953521AG) has two revisions but unsure on coding. Any thoughts on this would be great, thanks!

Does your car have keyless entry on all doors? If so, swap the handle from front to back and see if the problem persists. It's typically the actual capacitive element inside the handle fails, if the error doesn't follow the handle, most likely a wiring issue unfortunately.

Kessy can absolutely be switched off, both temporary and permanently by coding. There is caveats though; Start/stop will stop working as the car can no longer speak to the key when coming to a stop. You'll need to hold the key to the start button after pressing it so the car can detect it and authorize startup, this is the fallback that is used for a dead battery. I've done it before with obdeleven but disabled it as I actually like start/stop and can't be assed presenting my key each time; Control Units > Central Electrics > Adaption > "Keyless access and start authorization" > Kessy from "Installed" to "Not Installed" Yes, I took the risk of not being able to start my car for curiosity but had confidence (and prior read the manual) that there was a backup.

Hi Ian, not sure if you're still around here. Pretty sure I have the same engine as yours (DFHA?) Was the pipe replaced in this last reply the root cause of the leak? I'm currently having a pretty slow loss of coolant, takes about 3 months to empty a tank but I've previously never had to fill a coolant tank between coolant services on any VW group vehicle. It also worries me that it may suddenly get worse when I'm not the main driver. No sign of head gasket issues, car otherwise runs spot on.

I had this occur the other day and the car was only sat for 3 hours, I think the numbers they quoted were just from a customer complaint and they've went with that. Providing the car has been started that day at some point, if it has been parked for ~3hours+ I will always get this.

This is my first petrol car which could be why I noticed these things, I've only had modern diesels previously and they started and ran the same each time without any sort of hesitation or jittery idle.

It's a TSB that can be seen in Erwin, unfortunately you need to pay to access Erwin.

I got new coils recently and spark plugs, this completely solved the hesitation. Rough idle is only there with a hot restart after 2-3 hours but this is a documented (normal) issue to do with the catalytic converter. Cold starts are completely fine now. Note: I changed spark plugs at the start of this thread, that alone didn't fix the issue.

Turn off the air conditioning, pretty certain that's the noise it makes.

I'll need to investigate the area further from what Wino quoted with the MKI fabia. Sad to see they haven't addressed the issue over 3 iterations of the car, no doubt there will be a revised seal for the door available just like the revised number plate lights which have a better seal to prevent the boot corroding from the inside out.