Fault - ACC Not Available error message displayed

[SHANEO79]

Hi guys

Happy New Year!

Twice over the last three weeks I have started up my Arteon, engaged drive and taken off at slow speeds when suddenly the car shudders, the gearbox feels and sounds like it disengages then a very brief warning appears on the dash "ACC Not Available" in orange. Then after probably 3 seconds everything clears and the car returns to normal and I can drive off.

The first time this happened I was pulling out of a parking spot on the side of a flat road and when it happened again tonight I was pulling out of a shopping centre car park onto a main road.

It's a good thing that on both occasions there was zero traffic on the street or approaching from behind as with my car coming to a complete stop when the fault occurs could have been far more interesting if someone was behind me at that time.

Anyone here experienced this in their VW?

Thanks.

Shane

[Ando]

Another forum site shows others who have had the same problem.

VWVortex.com - ACC not available!

Guess it's time for dealer.

[JVM]

Hey Shane, yep mine Has done the same three times too. Am working with the dealer to bottom it out. So far it’s had the gearbox software updated but it’s happened again once since then. I’m meeting with their diagnostic guru next week to discuss the plan of attack.

[SHANEO79]

Another forum site shows others who have had the same problem.

VWVortex.com - ACC not available!

Guess it's time for dealer.

Thanks for the headsup Ando, I'll head over there and check that out.

[SHANEO79]

Hey Shane, yep mine Has done the same three times too. Am working with the dealer to bottom it out. So far it’s had the gearbox software updated but it’s happened again once since then. I’m meeting with their diagnostic guru next week to discuss the plan of attack.

Thanks JVM, I appreciate the info. Would you mind posting another update when you get to the bottom of this issue? I'm still 10k away from the 30k service so It'll be a while before I get the VW team to check this out.

[JVM]

Will do.
Incidentally I don't believe the ACC has an issue. Many cars disable the cruise control when a fault happens and I reckon this is the case here. If I'm correct, the "ACC not available" warning is a consequence of the gearbox issue and not connected.

[Seoska]

This happened to me 3 times in the space of a month when I first got my Arteon. All 3 times were in similar circumstances, where I was driving slowly up hill or a car park ramp. Reported it to dealer, they performed a dsg update and I have not had a issue since (over 7 months).

[JVM]

This happened to me 3 times in the space of a month when I first got my Arteon. All 3 times were in similar circumstances, where I was driving slowly up hill or a car park ramp. Reported it to dealer, they performed a dsg update and I have not had a issue since (over 7 months).

All 3 times my car was facing uphill too! All when going from reverse to drive.

[Mr_206]

Does it feel like your accelerating then all of a sudden the car sorta feels like the gearbox disengages? Its happened twice to me. After a couple of seconds you put your foot down and off the car goes. Didn't see any error messages anywhere though?

[HiddenTaco]

I've had this once in 2 years. Cold start, reversed out of driveway, drove 20 meters then turned right slowly. The gear box felt like it went into neutral and it was until I took my foot off the accelerator that it engaged. Dangerous that it happened at a t intersection.

Never reported this to VW as it only happened once. I suspect a gearbox software update would fix it.

The link provided by Ando (first reply) is not the same issue. I have had a similar issue as described. Only once in my Arteon and once in a loaned Tiguan. It happens when the car does not trust the sensors. Certain interference or dirt on the sensors can cause this.

Reported this to VW and they found no faults so did nothing. Not repeatable.

I highly suggest you report the occurrence of any of these things and make sure they note it on your records.

[SHANEO79]

This happened to me 3 times in the space of a month when I first got my Arteon. All 3 times were in similar circumstances, where I was driving slowly up hill or a car park ramp. Reported it to dealer, they performed a dsg update and I have not had a issue since (over 7 months).

Thanks for the input....my first time was on a flat road, second was going up a slight hill. I'll give my dealer a call to note the system for the next service. Since I posted this it hasn't happened again...but I'm sure it will

[SHANEO79]

Does it feel like your accelerating then all of a sudden the car sorta feels like the gearbox disengages? Its happened twice to me. After a couple of seconds you put your foot down and off the car goes. Didn't see any error messages anywhere though?

Yep, exactly. When it first occurred I thought that I had hit something or something had hit me. Everything chugged and stalled. Then exactly, plant your foot and off you go like it was nothing. So odd. The ACC Not Available comes up (for me) right in the middle of the instrument cluster and is only briefly displayed for a second, two seconds max.

[JVM]

Hey Shane, yep mine Has done the same three times too. Am working with the dealer to bottom it out. So far it’s had the gearbox software updated but it’s happened again once since then. I’m meeting with their diagnostic guru next week to discuss the plan of attack.

I haven't had chance to catch up with the diagnostic guy yet. I get on well with the service team (My son has even done work experience there) so they are keen to dig into it and see what they can find but I just haven't had the time to call in. Will update when I do get in there.

Reading everyone's posts, the faults all seem identical and unfortunately don't record anything in the fault logs so I suggest recording all the details and report it each time so if it degrades over time, there is a history (especially important as you get close to the end of the warranty period)

[SHANEO79]

I haven't had chance to catch up with the diagnostic guy yet. I get on well with the service team (My son has even done work experience there) so they are keen to dig into it and see what they can find but I just haven't had the time to call in. Will update when I do get in there.

Reading everyone's posts, the faults all seem identical and unfortunately don't record anything in the fault logs so I suggest recording all the details and report it each time so if it degrades over time, there is a history (especially important as you get close to the end of the warranty period)

Hi JVM, thanks for the update.

I'm off to my local dealer Monday week so at least I can get this recorded and noted on file for the future as a solution might be a little while away.

I'll keep you posted.

Shane

[SHANEO79]

So I dropped my Arteon off this morning at my local Brisbane dealer.

Just as a lot of you guys have said they've run diagnostics, pulled the log out of the car and nothing was picked up at all for both events so exactly what you have said. VW have stated that the car disengaged because of a possible reflection from a mirror or another car interfering with the radar sensor or something happening when going through a tunnel. I wasn't going through a tunnel and told them I disagree with their response.

I was kindly advised to install a dashcam and try and capture any future occurrence of this fault on it or "it would be great if you could record it with your phone but that's illegal and you could get done by the cops but it would really help us out but be careful".

They then told me they did a full software update, no idea what to or from or what it has updated but driving her home tonight the car feels way more responsive in the gears, not sure if it's my mind playing tricks but it feels very tight and responsive.

Anyway, I just wanted to keep you all posted and I'll let you know what else happens moving on from this.

Thanks guys.

Shane