chimaera

The V6 got 345 mm disks and require minimum of 17" wheel. Everything else is 312 mm or less and works with 16" wheels.

Unless it's a V6 they should be fine, but worth double checking.

Go looking in scrapyards, there's going to be plenty of dead Superbs in them by now.

Definitive wheel and tyre guide for the Superb 2:

That's not it. This thread shows what you're looking for:

Can you post a picture of the label on the BT module? I've some recollection that certain earlier versions had compatibility issues with some phones, and it would help to know what you have in your car.

If a sensor fails with a plausible value it's never going to set a code. You'll have to monitor things over a period of time I think. The VAG-DPF app with a Bluetooth obd adapter could be helpful here. Another possibility is that you have an engine problem that is resulting in excessive soot generation and leading to frequent regens. A check over fuel and turbo systems might be no harm.

It's regenerating the DPF. It shouldn't be doing it so often though, so you have a problem in there somewhere. You'll need diagnostics to figure out what. Differential pressure sensor is a good possibility but don't go throwing parts at it blindly.

If an external Bluetooth module is fitted you will find it beneath a plastic cover under the driver's seat. What head unit is fitted to your car? Does BT work for phonecalls?

IIRC it allows +/- 15%. @OP, you will need to do a few brim to brim economy checks and for each one reset MFD2 to zero. When you fill up each time record the MFD average economy and compare it to the actual economy from brimming the tank. If you do this over a number of tanks you'll get a pretty accurate correction which you can use in adaptation channel 3 on the instrument cluster: http://wiki.ross-tech.com/wiki/index.php/VW_Golf_(1K)_Instrument_Cluster#Adaptation

I just bought one for our Fabia (HH variant). Dealer said we were lucky that one was in stock as these harnesses are made in Ukraine and supply is severely disrupted right now.

MFD is usually off by around 15%. If you have some patience and VCDS, you can correct the calibration.

What year is your car and what engine is fitted?

Sounds like it might be one of the main relays. Not sure which one it might be and I don't have the wiring diagrams to hand right now.

I don't think so, it plays deliberately dumb on everything except steering and parking distance and waits for the driver to decide what they're doing.

No. The system activates below 30 km/h which means it starts using the parking sensors to check the length of spaces as you pass them to find one long enough. It then prompts you to stop, select reverse and the car takes over steering while you manage gears/accelerator. When you've gone as far back as you can, you get prompted to drive forward and the car continues steering. When the car decides it's parked it tells you to stop moving and it returns steering control to the driver.

And I've given you some suggestions on things to check. This is not a problem I have ever seen come up here, so I doubt anyone is going to have a solution right away. You'll have to work through it bit by bit.

You have to be travelling at 30 km/h or less for it to work. According to the manual (p. 121) 'Speed too Low' comes up if you have not exceeded 10 km/h since the ignition was switched on. The system requires ESP to be switched on and functioning correctly, so check that for errors. It also gets messed up if it can't detect wheel speed correctly, e.g. one wheel is a different size.

Battery management needing coding on the Superb 2 was only included on models with start stop as far as I know. A lot of the control modules get upset when battery voltage drops too low but the warnings will reset when the voltage gets back to normal. Any functions related to steering require you to turn the wheel lock to lock to recalibrate the steering angle sensor. All of the OPs warnings fall into this category.

Those two wires I mentioned are the only ones connecting the microphone to the nav unit. Any other cables on that connector are doing other jobs and must be left in place.

So having had a quick look, I can only see one microphone listed for the Superb in the parts catalogue. It should connect to a 12 pin connector at the head unit, on pins 1 (black) & 7 (white), connecting to pins 1 (black) & 2 (white) on the microphone. The rest of that 12 pin connector is going to the BT module.

I'd suggest getting the wiring diagrams from https://erwin.skoda-auto.cz/erwin/showHome.do An hour's subscription will probably be enough to get what you need, but a day would give you a bit more time to navigate around. You'll need your VIN. TBH I'd be really surprised if the microphones were different, it's probably a wiring issue.

Why didn't you just plug in the existing microphone?

There are probably empty slots on the fuse panel switched live track that you could use if you got the appropriate fuse terminal to slot in.

Probably dead antenna. OE sharkfin is around €90 and easy to fit.