New car niggles

[mrmerle]

I bought a 2017 PE with 15k on the clock at the end of September and I have a couple of niggles that I'm struggling to get resolved;

At low speeds when turning half to full lock I'm getting a violent banging from the front drivers wheel. Its most prevalent when the car is cold the road surface wet, and I generally get a bang-bang - pause - bang which you can clearly feel through the steering wheel. The car is back with Audi and they have rectified something in the DRC system but the service advisor has said that the banging sound is still present. The master tech claims the noise / feedback is normal, which I could sort of believe as most of my previous M's all had similar sounds from the diffs when cold, however would be interested to hear what others have experienced?

Secondly, the car was sold with "Advanced Key" and "Audi hands-free boot opening system with Advanced Key" both options are clearly listed on the sales advert and in the spec listing for the car via the myAudi app. The hands free boot system has never worked so I asked for it to be investigated in case the previous owner had it deactivated. The dealership are now saying that the car doesn't have the boot opening feature installed, is there any physical feature on the exterior of the car that proves either way if its fitted or not?

[MikeFish]

I wouldn't describe it as violent banging but it is normal for quattro cars to make a noise when on full lock. It gets worse as the weather gets colder and tyres become more worn.

Can you close the boot with a long press of the key fob?

[dasquade]

I wouldn't also describe the quattro behavior as violant and in normal condition it, but it does become noticable at a full lock at very low speeds...but it is more of tire torsion rubbing feel/noise (normal as all wheels are sort of linked and it is creeping against 4 different wheel turn radiuses).
Like in most cases...if you are really worried, feel free to record the behavior on camera with sound so we can compair (i recall someone every was complaining about his ceramics squalling like a frighttrain, we tought normal untill we heard it in his movie!!! Wasn't normal at all :p ).

As for the visual of the boot kick feature, if you up for it, you can spot it. Go lay under the car and look deep into the diffusor on the right side. There should be a pretty tick harnass wire exiting the car and lays ont the diffusor under the crashbar running to the left side.
Not sure if you have access to VCDS or obd11, but that would allow you to access the cars modules and see for yourself if it has the module and if activated. I would need to look it up on my car under what module it is (i'm thinking the read lid module or the central electronics).
For what it is worth, half of the times the boot kick isn't working anyway (rolls eyes...lol it works in my garage 99% if i accidently passes the car and activate it unwanted).
As MikeFish asked, does the key fob trunk lid opening feature works....use that .

[Markp]

Steering judder is normal in those conditions (Google Ackermann effect, Porsche, Mercedes steering judder - loads of cars with fat tyres get it).

[mrmerle]

Thanks, I should be getting the car back later today so it'll be interesting to see if the behaviour has changed much, if at all.

In regards to the boot, I've not tried holding down the button on the fob before, I do have the two buttons on the underside of the boot sill though, for the close and lock position functions - I've never been able to figure out which optional extra gave the lock position function.

Will be an interesting conversation with the dealer if the car doesn't have the option installed, I know it was only a £750 option but it was pretty high up on my 'nice to have' requirements due to having dogs.

[MikeFish]

The lock button on the inside of the boot lid only came with the advanced key so looks like you have it and it is just a case if not working very well perhaps. Another feature of it was the ability to close the boot lid with the key fob. However, this can be programmed for any car using VCDS as well as adding the functionality of closing the boot from the button on drivers door.

[Lig]

Hi mrmerle,

I can't comment on the boot lid, but it looks like that has been answered.. as for the banging on full lock, yes this is normal and like others have said its something to do with the angle of the wheels and grip when turning. I have to full lock to get out of my drive and it does it every time. It also did it on my old 993 and was even worse when I had the Cup2 tyres on, so yes something to do with angle and grip.. BUT it is only on full lock and is more a Jud-jud-jud kind of 'rubber knuckle' sort of feel\sound through the steering wheel, not a banging??!!

I hope you get to the bottom of this, if it is indeed something else and a fault.

Cheers,
Lig.

[mrmerle]

Thanks, the boot issue has been solved, I had two test drives before buying the car and each time we couldn't get it to operate. It got looked over on the handover and has been a niggle ever since as it would be a god send in the dark and wet mornings with a mucky collie in each hand.

So, after 'investigation' the dealership are saying that I don't have it fitted as an option.

I pick the car up, come home, and as per advice I try holding down the fob and the boot closes, swing my foot under the bumper and it opens. I do it three times on the trot. However, it only works if the car is unlocked, the user manual is ambiguous if this is a condition of operation, it would seem to defeat the point of it if so.

[mrmerle]

The judder / banging is just the same as it ever was. I didn't get to speak to a technician when I collected the car but will hopefully be getting a phone call tomorrow to find out what the DRC issue was.

Here is a brief vid of the issue, at around 12 seconds you can hear the first two bang-bangs (sounds like an air rifle being fired) the third follows around the 17 second point.

https://youtu.be/IJto3X8eA4E

[MikeFish]

The judder / banging is just the same as it ever was. I didn't get to speak to a technician when I collected the car but will hopefully be getting a phone call tomorrow to find out what the DRC issue was.

Here is a brief vid of the issue, at around 12 seconds you can hear the first two bang-bangs (sounds like an air rifle being fired) the third follows around the 17 second point.

https://youtu.be/IJto3X8eA4E

Been a while since I had my car but that sounds like there is something wrong to me; maybe it's the video but that sounds worse than anything I've ever had. And maybe it's just my current car but when it does it normally there will be several noises in a row, not just one or 2.

[bn8959]

Thanks, the boot issue has been solved, I had two test drives before buying the car and each time we couldn't get it to operate. It got looked over on the handover and has been a niggle ever since as it would be a god send in the dark and wet mornings with a mucky collie in each hand.

So, after 'investigation' the dealership are saying that I don't have it fitted as an option.

I pick the car up, come home, and as per advice I try holding down the fob and the boot closes, swing my foot under the bumper and it opens. I do it three times on the trot. However, it only works if the car is unlocked, the user manual is ambiguous if this is a condition of operation, it would seem to defeat the point of it if so.

I presume you have the key in your pocket when you are trying? Do the doors automatically unlock when you put your hand on the door handles? Have you tried a new battery in the key?

[dasquade]

Thanks for uploading the movie....so there is an BANG noise...yup that is definatly not normal. Did you had a look yet at your inner fender liner? Maybe something is loose and getting pulled and bang released under heavy turing. Is the car lowered?
*kinda sounds like soft plastic banging so not directly hub/axle issue...

[MikeFish]

Does it do it when turning in both directions? And what about when going forward too?

[Tadass910]

The judder / banging is just the same as it ever was. I didn't get to speak to a technician when I collected the car but will hopefully be getting a phone call tomorrow to find out what the DRC issue was.

Here is a brief vid of the issue, at around 12 seconds you can hear the first two bang-bangs (sounds like an air rifle being fired) the third follows around the 17 second point.

https://youtu.be/IJto3X8eA4E

It sounds like you hit a wall

[mrmerle]

Re: wheel noises, happens only when turning left at half to full lock, the car will make variations on that sound in forward or reverse. Most prevalent when car is cold and road surface is wet.

Re: boot closure, yes key is in pocket and keyless entry works fine on all other doors, new battery in fob. I've tried and tried and tried, the boot will only open via gesture if the car is unlocked first.