2018 Audi A3 quattro - Can you enable ACC?

Lane assist and high beam assist are totally different things than ACC, ACC needs front mounted radar sensor.

Correct, I was just pointing out that the new vehicles were equipped with the hardware and just required coding changes to activate them.

Yes, some features. But the problem with the new VAG vehicles is that even you have the hardware the functions cannot be enabled as they’re SWaP functions. Means only factory is able to enable them and only if you’ve bought the feature initially.

Some features like lane assist and high beam assist can be enabled if the hw is suitable. But ACC, Carplay etc. Not.

I have had to activate carplay, trailer hitch, navigation, and other features with the necessary activation codes like you are referring to but I wasn't sure if that was necessary for ACC since it is a similar drivers assistance feature like lane assist that did not require it on my vehicles, which are new VAG vehicles as well.

I guess the easiest way to find out would be if I run into an A3 with ACC, I can run the erase activations test plan and then reactivate and it will give me the full list of everything that requires an FeC.

^ And your point to prove with that would be what?

FeC is required for :

ACC
Navigation both low and high models, both have different FeC
Bluetooth
Mirrorlink
Voice control
Drive mode selection

That’s pretty much it. Mirrorlink and drive mode you can buy as an aftermarket installation, others no. And no way to ”code” them locally or even online.

There’s lot’s of websites which already have a comprehensive list of FeC features.

If you clear the activations, enabling them requires dealer visit.

wuplur said:

I guess the easiest way to find out would be if I run into an A3 with ACC, I can run the erase activations test plan and then reactivate and it will give me the full list of everything that requires an FeC.

Click to expand...

wuplur: " run into an A3 with ACC"? No offense intended, but the suggestion sounds a tad over-the-top (and more than a bit expensive) just to get the data!! Anyhow, notwithstanding downtime's sage response (which Is usually correct in my experience), HERE is a copy of all the admaps from an A3 with ACC (albeit it's from Australia- not from the land of the free)

Good luck

Don

I should have mentioned it before but I work in the service department at the dealer so it wouldn’t cost me anything but time. No, I haven’t run into one but honestly forgot to look and it’s a pretty rare feature around here.

To save your time, here's a more or less complete list of FeCs (copied from Golf7 forums) :

00030000 AMI (USB Enable)
00030001 Gracenote
00040100 Navigation
00050000 Bluetooth
00060100 Vehicle Data Interface
00060200 Infotaiment Control
00060300 Mirror Link
00060400 Sport HMI
00060500 ??
00060600 ???
00060700 ???
00060800 Apple Carplay
00060900 Google Automotive Link
00060A00 ???
00060B00 ???
00070100 SDS
00070200 SDS for Nav
00070400 ???
021000xx Nav Maps EU
021100xx Nav Maps NAR
021200xx ???
021300xx ???
021A00xx ???
021B00xx ???
021D00xx Nav Maps ROW
023000xx Nav Maps EU
023100xx Nav Maps NAR
023D00xx Nav Maps ROW
033000xx Nav Maps EU
033100xx Nav Maps NAR
033D00xx Nav Maps ROW
061000xx Nav Maps EU
061100xx Nav Maps NAR
061D00xx Nav Maps ROW
063000xx Nav Maps EU
063100xx Nav Maps NAR
063D00xx Nav Maps ROW
071000xx Nav Maps
073000xx Nav Maps EU
073D00xx Nav Maps ROW
081000xx Nav Maps EU
081100xx Nav Maps NAR
081400xx Nav Maps AGCC
081401xx Nav Maps AGCC, Turkey
081402xx Nav Maps AGCC, Israel
081403xx ??
081500xx Nav Maps South Africa
081600xx Nav Maps Australia, New Zealand
081700xx Nav Maps India
081800xx Nav Maps Mexico
081801xx Nav Maps Chile
081900xx Nav Maps Asia/Pacific
081D00xx Nav Maps ROW
081D01xx ??
083000xx Nav Maps EU
083D00xx Nav Maps ROW
091000xx Nav Maps EU
091100xx Nav Maps NAR
091300xx ??
091400xx Nav Maps Turkey
091401xx Nav Maps AGCC, Turkey
091402xx Nav Maps AGCC, Israel
091403xx Nav Maps AGCC
091500xx Nav Maps South Africa
091600xx Nav Maps Australia, New Zealand
091700xx Nav Maps India
091800xx Nav Maps Argentina, Brazil, Mexico
091801xx Nav Maps Chile
091900xx Nav Maps Asia/Pacific
091A00xx ??
091D00xx Nav Maps ROW
093000xx Nav Maps EU
093100xx Nav Maps NAR
093D00xx Nav Maps ROW

Am I missing something? I don’t see ACC on that list

There are some with ??? so maybe one of those is ACC?

Is it possible to buy a used LRR radar (e.g., from a wrecked car (not front)) and replace the factory fitted MRR (front assist) and get the ACC going (if, of course, all the other modules meet the requirements) ?
Is the used radar married to the VIN of the vehicle it's taken from or does this only trigger CP?

a module which has CP of course has the VIN of the donor car inside, that is how CP works. it is during the CP clearing procedure that the module will receive the VIN of the new car it's being matched to.

darkchina811 said:

a module which has CP of course has the VIN of the donor car inside, that is how CP works. it is during the CP clearing procedure that the module will receive the VIN of the new car it's being matched to.

Click to expand...

darkchina: hi. I do like learning more about CP operation - thank you for the post!

Your explanation is interesting because it (slightly) challenges my understanding of the FAZIT process for clearing the DTC. Whilst I don't dispute your description regarding writing the VIN onto the retro-fitted module, I had understood that there was also a process whereby the "identity" (defined somehow?) of the new module is written back onto the database that the CP master uses for the challenge-response activity (@ ignition switch-on).

So- in a sense, I had understood that the new unit's identity also is "registered" in the car's DNA and this is why if the old module is re-installed after the FAZIT process, a CP error will occur (despite the fact that it contains the car's VIN) - I think.

Am i mistaken in my understanding (entirely likely)?

Don

Don, afaik you’re absolutely correct.

And for the poster asking about replacing MRR with LRR radar. Naturally VW has thought of this as well since they don’t share the same feature codes. So LRR won’t work even you will get the CP removed.

This is an old thread but it can surely be done. I have a Q3 F3, and there is an ACC retrofit on kufatec for it.Either way, I have bought a VAS 5054a dongle, a new steering column switch (that includes ACC and not just cruise control), installed it just today.

Waiting on someone tomowrrow to connect via the VAS tool and enable it got way less than guys at kufatec since they also send you the sensor, which is already on the car (since it has presense and all that stuff).

^ Yes, old thread and things have evolved quite a lot since. Even pACC is possible to retrofit.