I bought an S3, with a solid front grille, although it has the ACC stalk. I believe it was initially built with ACC as an option on this vehicle , a 2016 model.

 

I found a spare radar sensor, plugged it in, coded it with VCDS, but have an error referring to calibration

 

When I try to initiate the adjustment procedure I get a message 'unti has rejected the request', and error code 7f 2f 81

 

What's the best way to proceed ? I need to calibrate the position of the sensor I guess (the car had been in a front end shunt, CAT D, but repaired (on a tight budget I think)

 

Any advice appreciated, can I calibrate the sensor with just VCDS ?

Solid front grille is normal on these, the sensor lives behind it. 

What is this radar sensor plug you are talking about and where did you find it.

You cant just start the procedure, the car needs to be set up with the correct calibration target and really ODIS is needed. Chances are component protection is enabled so cant be done till this is removed. 

Have you got any warning lights, fault codes or dash messages. 

50 minutes ago, ApertureS said:

Solid front grille is normal on these, the sensor lives behind it. 

What is this radar sensor plug you are talking about and where did you find it.

You cant just start the procedure, the car needs to be set up with the correct calibration target and really ODIS is needed. Chances are component protection is enabled so cant be done till this is removed. 

Have you got any warning lights, fault codes or dash messages. 

 

Actually I changed the grille for one with a cutout for the sensor today.

 

When i said solid i meant a complete plain grille with no aperture for the radar to see through. I think the Cat N repairer just decided to disable the ACC and fit a normal grille as a cheap option. There was the remnants of the old ACC radar sensor bolted to the bracket behind the grille (front end impact)

 

I'm a service technician and qualified instrument /automation engineer so I'm up for it....what does an ACC calibration target look like ? Maybe I could build or simulate one somehow

 

 

43 minutes ago, fixitsan said:

 

Actually I changed the grille for one with a cutout for the sensor today.

 

When i said solid i meant a complete plain grille with no aperture for the radar to see through. I think the Cat N repairer just decided to disable the ACC and fit a normal grille as a cheap option. There was the remnants of the old ACC radar sensor bolted to the bracket behind the grille (front end impact)

 

I'm a service technician and qualified instrument /automation engineer so I'm up for it....what does an ACC calibration target look like ? Maybe I could build or simulate one somehow

 

 

Theres many more questions i asked to get an understanding of the issue, fault codes and such? Where was this sensor located? any dash faults?

 

And im even more confused now as the superb mk3 does not have an 'aperture' for the radar, it is done through the grille and it is fully hidden behind it so we are gonna need a lot more information than whats been suppled

The calibration target looks like this, it's the bottom white bit that's used for ACC:

 

I don't think it's a simple process though, this page might help: https://www.audi4ever.com/blog/eintrag/25254-acc-calibration-adaptive-cruise-control-a4-a5-q5-distronic/

 

Assuming your VCDS is genuine, it might be worth asking Rosstech with an autoscan of your vehicle

 

Random youtube clip for a 3rd party tool:

 

 

17 minutes ago, langers2k said:

The calibration target looks like this, it's the bottom white bit that's used for ACC:

 

I don't think it's a simple process though, this page might help: https://www.audi4ever.com/blog/eintrag/25254-acc-calibration-adaptive-cruise-control-a4-a5-q5-distronic/

 

Assuming your VCDS is genuine, it might be worth asking Rosstech with an autoscan of your vehicle

 

Random youtube clip for a 3rd party tool:

 

 

 

 

Thanks for the tips, although those calibration jigs seem to be for visual sensing systems.

My ACC sensor is not camera based but seems to be a microwave radar type device. I suppose it could have an infrared camera in their which might see through the layers of plastic in front ?

47 minutes ago, ApertureS said:

Theres many more questions i asked to get an understanding of the issue, fault codes and such? Where was this sensor located? any dash faults?

 

And im even more confused now as the superb mk3 does not have an 'aperture' for the radar, it is done through the grille and it is fully hidden behind it so we are gonna need a lot more information than whats been suppled

 

 

There may be other types, but here's the grille with the cutout for ACC radar

https://www.ebay.co.uk/itm/373795374606?_trkparms=ispr%3D1&hash=item5707f0c60e:g:yDoAAOSwtARhlV1e&amdata=enc%3AAQAGAAACoPYe5NmHp%2B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSafTQYbq3L7RBVAMi0K9cwwwZYTuu1UKFauoppLkzBOUl6jQ%2FkvtSRs19X1E695TOxzEGtdlFcCG6h19ydEXwv8i25Bh6sJlGzTPC8LM76dB00wO0LGlLsukdOtZJRTlcXTFKvTyvQGDY2FeiI7ocNB3z95z9WnElOeMKiy%2Fg%2F8BBOotf4uLsxpvsrxvulO5y94koMJyKpMcjHwWmzwKuaRapKzzD86Io%2FyJ9S%2FxZbH%2F%2B6kZfkUeC7rpjQyc9EOj3ZMKbhRZadDeiuDzEz7gcUkyihs12tfqniGvIRBJpelXyTgT%2BrDFK7Ft9%2B0fw2gsnfOjiuM4fF9KcnhuZXod7TqSqU6x3BpLUgcvI85RJSTLYYN%2FQJqgKnGIuP4Z%2Bym5NQteWMe0GeQzdOiHL6%2Bkv96B8q7HuLD5g7F9U69PLCz9MkBPqk4W7qRw9LQjzTFsKco8rcjmjG9NpDpGAI2LsvlQ6ToQ2nBn5k4OlbsPl7dONF1SCpL6q7yP3MOc9gNiGHOeZTVfCKGj68QvzCHSLSP%2FOAqRwfcfW9lRMSkUTBIZlgRoF0ZjQd2sgU4GDP9EprOTPT66FttlVgb2Lm2bPdgkWseFgOTUSKitOSMfEj4m7bgIvCOBwBNISEAgREevm9lgYc%2F1HLoQTLJsIYKPVrog0MkgCSd%2FaCaTBa4WT%2FVclXSSFyYKGmZ1cote8Q2uyUWMZ4Fl%2BoKTyiYMb9HxFgPFIbEo7JxOd4mFKHGwWEG2UXzytSD4uGtfCuVs0HHm3E3rLuPep4AGd0U%2F6930%2BQDJNudh3QvmBfldMvwDXref5NjxQP3HBbqxG%2BVUrNWyJjOXUhcLVtRrcsifUB%2B8d2Q%3D%3D|clp%3A2334524|tkp%3ABFBM4Ja-yqZf

 

 

 

And here's the grille without the ACC window, which I refer to as 'solid'

https://www.ebay.co.uk/itm/153862147021?fits=Car+Make%3ASkoda|Model%3ASuperb&_trkparms=ispr%3D1&hash=item23d2e60bcd:g:umkAAOSwPzNeakpf&amdata=enc%3AAQAGAAACoPYe5NmHp%2B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsStEKTPzZMfQmny3knR97t0EPq3aw2qZpGOo%2Bbe5CJTrOuOcS84tBki0KsbvAF1Y8jaxSm4l5q%2FFCC19S67784GUVm%2FvBeD3XpCJJp0xw7xt3sl%2FKP%2FEbYExffoApu2SLxMROB1B6p4doHYDI5jdXG%2BGiVBEHmlCAWoZFpZ%2FKp2Sa%2BJjPFU3vJTo%2Fx7%2F1CquaZvI25sbkXo%2FJPByUA7n1kE2TQd%2B3rYrB63PXelcQhFL%2BWnzBoSis5GfLDv3VvOZXSWC7F%2FaE7ha%2BhlqHGFhU24uMS7WQXgGDiT35HPL18vMcLcz51TDyer93niXrK8JM8t1GsIK0WwYglXvPe0V65z1wOfxRqgOVDYm4YE4WtMVt8yFJkosye%2BK7ZMKyY%2FEHED%2FRUOVDBBOpvhhRNe0Z0awrUpriUqeDwy3R7C3KkA0SCJS%2FAe8HbL9gWvD1p%2Fzskm9Aj7XETX3yNdX9HX%2B%2BHR7vGg0BGGiI%2FsrW6UQEprmEwimh31wX3jLZhFXyDvvcRnOat%2B6hdcRAKLedOZmwLroaRJ8tyeeCODf8ayJGCyi65fQC6GVEcZmIF24zWSQ1RQW4diufM7HhlcgDdAlpQtlBY%2B%2FCz7yOHQ6jG%2BM6ZEBGWp36EInOTGe5fuvZnFVJ8oZXeyW6p8sDPYMTmvxaY%2Fa%2FTnuhopR2bmVrZJYLyTinaO9Maawvahadm0NklwAHPODKZX37HC%2BRccVqu6qc27k5b25Vl2Fho44DDNDEqcFvyzmsSPSXmP5X1RBbh31wCCzJezJ5FsHI%2BhKdLnTFNWv2zrooe%2FhHZhwmbuJGuxQjwdOV4CYnz5ebHdwj3vOa3UgDGiSRPf4a%2F3qRxWU4f4w%3D%3D|clp%3A2334524|tkp%3ABFBM7OHIyqZf

1 minute ago, fixitsan said:

Thanks for the tips, although those calibration jigs seem to be for visual sensing systems.

My ACC sensor is not camera based but seems to be a microwave radar type device. I suppose it could have an infrared camera in their which might see through the layers of plastic in front ?

 

The large top section with the black and white circles is for the visual lane assist camera.

 

The lower white section is basically a metal plate, that's used for the ACC radar systems

 

They just happen to be on the same rig.

1 minute ago, langers2k said:

 

The large top section with the black and white circles is for the visual lane assist camera.

 

The lower white section is basically a metal plate, that's used for the ACC radar systems

 

They just happen to be on the same rig.

 Much appreciated

 

As I don't have lane cameras I should probably only need the metal plate. I already have something suitable.

 

I would like to know the sensor error message description though, 7F 2F 81, so I'll give Ross Tech a try

 

Cheers

Chris

1 hour ago, fixitsan said:

 Much appreciated

 

As I don't have lane cameras I should probably only need the metal plate. I already have something suitable.

 

I would like to know the sensor error message description though, 7F 2F 81, so I'll give Ross Tech a try

 

Cheers

Chris

This error doesn’t mean much to us, what software are you using to get this fault?

if vcds, only people that will know are rosstech as it’s not a vehicle fault code but a software one

 

and what fault codes are stored for the radar? There’s bound to be some

2 hours ago, ApertureS said:

This error doesn’t mean much to us, what software are you using to get this fault?

if vcds, only people that will know are rosstech as it’s not a vehicle fault code but a software one

 

and what fault codes are stored for the radar? There’s bound to be some

 

 

I've posted this issue already on the Superb VCDS forum, I'll just go back to there

5 hours ago, fixitsan said:

 

 

I've posted this issue already on the Superb VCDS forum, I'll just go back to there

We are unable to help unless you give us more information?

you seem to keep skipping over the questions?

14 hours ago, ApertureS said:

Solid front grille is normal on these, the sensor lives behind it. 

What is this radar sensor plug you are talking about and where did you find it.

You cant just start the procedure, the car needs to be set up with the correct calibration target and really ODIS is needed. Chances are component protection is enabled so cant be done till this is removed. 

Have you got any warning lights, fault codes or dash messages. 

 

Radar sensor plug ? It is the plug which plugs into the ACC radar sensor behind the grille

 

Warning codes mentioned alread 'ACC not available'

 

Device error "0267 - Sensor for Automatic Distance Regulation; Incorrectly Positioned "   (Due to recent replacement and requirement for calibration)

  

22 hours ago, fixitsan said:

 

Radar sensor plug ? It is the plug which plugs into the ACC radar sensor behind the grille

 

Warning codes mentioned alread 'ACC not available'

 

Device error "0267 - Sensor for Automatic Distance Regulation; Incorrectly Positioned "   (Due to recent replacement and requirement for calibration)

  

Okay, you said you found a spare sensor? Where was it from? Did it come off this car?

 

Sounds like it might not of, so you need someone with genuine odis to run the replace module procedure which will - correctly set coding, parameters, remove component protection.

after this with the correct vas tool set at the perfect location in the front of the car (perfect to 1mm) you will need to run the test plan in odis to calibrate it.

 

cracked or hacked odis will not do the job as it needs a legit connection to vw’s online server.

It is not necessarily easy to clear faults with the sensor without a connection to VW/Skoda online server.

I had a slight bump to my car recently and had it repaired by a Skoda approved repairer.

Before releasing it they had to check the radar sensor with their VW/Skoda approved equipment and it came up with a fault that they couldn't clear so they contacted Skoda.

Skoda then connected via their online server and sorted it out.

So even a specially equipped Skoda repairer can have problems with this.

Incidentally the bump I had did not touch the sensor or anything round it so I was surprised why the calibration was necessary but told it was required after any sort of repair.

My sensor, behind the grille, also has a small square mirror on it (my phone's camera is reflected in it) along the top edge

 

I suspect a physical calibration requires a laser at a set height shines it's beam into the mirror and then the position of the reflected point of light is used to direct the application of adjustments by turning the adjustment screws.

 

Seems like errors are needed to be cleared in software first though if the recent comments are correct

 

 

25 minutes ago, fixitsan said:

My sensor, behind the grille, also has a small square mirror on it (my phone's camera is reflected in it) along the top edge

 

I suspect a physical calibration requires a laser at a set height shines it's beam into the mirror and then the position of the reflected point of light is used to direct the application of adjustments by turning the adjustment screws.

 

Seems like errors are needed to be cleared in software first though if the recent comments are correct

 

 

Not at all no.

 

The mirror is used to set the radar physically in the almost straight ahead position and it doesnt have to be perfect but within a set tolerance by using the calibration board. 

After this it must be electronically calibrated which does the fine adjustments and gets it perfectly set up.

It isnt an either or situation but a both need doing.

Only after this will the 'wrong adjustment' code clear.

 

But before you can even start doing any of these steps above you need to have it plugged in to a genuine ODIS and run all the new module procedures else it wont be set up for the car at all and calibrating it will be a complete waste of time. 

 

 

Also, a sticker on the lens is not a good start for these as it could cause interference. 

52 minutes ago, ApertureS said:

Not at all no.

 

The mirror is used to set the radar physically in the almost straight ahead position and it doesnt have to be perfect but within a set tolerance by using the calibration board. 

After this it must be electronically calibrated which does the fine adjustments and gets it perfectly set up.

It isnt an either or situation but a both need doing.

Only after this will the 'wrong adjustment' code clear.

 

But before you can even start doing any of these steps above you need to have it plugged in to a genuine ODIS and run all the new module procedures else it wont be set up for the car at all and calibrating it will be a complete waste of time. 

 

 

Also, a sticker on the lens is not a good start for these as it could cause interference. 

 

 

A sticker on what lens ?

1 minute ago, fixitsan said:

 

 

A sticker on what lens ?

The white sticker on the face of the radar of the photo you just posted 

17 hours ago, fixitsan said:

 

 

+1

That white sticker shouldn't b there!!!

There should b nothing obstructing it in any way!!

It's even been written over the radar with a white marker!!!! Sheesh 😯

 

This is how mine looks....

Edited 22 November, 20214 yr by JR RS