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Issue report: Jump to Park when Autohold at traffic light~

7687 Views 78 Replies 28 Participants Last post by  xkpgx
Hi Everyone,

I just got an E-Tron GT at Califonia Irvine last month, Kemora Gray with full packages of Prestige.

Does anyone meet this issue:
3 times, when I put autohold at the traffic light, the car jumped from D to P without any notice, I'm pretty sure no one touched the gear handle or door handle, and I try to reproduce the problem but didn't find any method, it looks like random...
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It's there because a lot of people have never driven a manual transmission and are really caught off-guard when they lift their foot off the brake and the car starts to roll back. Again, I have the SUV, which free-rolls very easily. It's a feature that on some streets in SF, I had wished my manual transmission ICE had available. Fact is, though, it I have Hold Assist on my shortcuts screen because: 1) it should be disengaged if going through an automatic car wash, or similar situation; 2) having it activated makes parallel parking much more of a jerky pain. For the SUV, at least, I think parallel parking the etron on a hill is about the most difficult maneuver you have to deal with. Much trickier than in an ICE, either automatic or manual transmission.
OK. That makes sense … if you are on a hill. It still doesn’t explain why someone needs this on at a stop sign or traffic light.

On my Teslas, I just kept “creep mode” on which accomplished what you are describing without having to lock the brake system. It programmed the car to behave like an ICE car that was using engine torque to move forward if you let off the brake. I was always surprised when folks said they turned that off.

That being said, your earlier post said that the GT had the always on … that its transmission always had some type of “pull” in place.

So the question remains, if the GT doesn’t keep a completely neutral stance, and always behaves like an ICE manual transmission … then why does someone need this feature activated. You certainly don’t need it for stop signs/traffic lights and if the transmission on the GT always has some ”pull” then even when parallel parkin on a hill, you should be fine.

BTW: for some reason, I keep thinking about Bill Colby’s old schtik about driving in San Francisco in his Volkswagon Bug and having someone put a fake stop sign at the top of the hill, then watching with binoculars and saying “look Martha we got another one”. And his whole punchline of dying while drifting backwards into the Bay in his VW Bug because he couldn’t shift fast enough to get started from the stop sign.

Oh well. Yeah, I’m old.
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OK. That makes sense … if you are on a hill. It still doesn’t explain why someone needs this on at a stop sign or traffic light.

On my Teslas, I just kept “creep mode” on which accomplished what you are describing without having to lock the brake system. It programmed the car to behave like an ICE car that was using engine torque to move forward if you let off the brake. I was always surprised when folks said they turned that off.

That being said, your earlier post said that the GT had the always on … that its transmission always had some type of “pull” in place.

So the question remains, if the GT doesn’t keep a completely neutral stance, and always behaves like an ICE manual transmission … then why does someone need this feature activated. You certainly don’t need it for stop signs/traffic lights and if the transmission on the GT always has some ”pull” then even when parallel parkin on a hill, you should be fine.

BTW: for some reason, I keep thinking about Bill Colby’s old schtik about driving in San Francisco in his Volkswagon Bug and having someone put a fake stop sign at the top of the hill, then watching with binoculars and saying “look Martha we got another one”. And his whole punchline of dying while drifting backwards into the Bay in his VW Bug because he couldn’t shift fast enough to get started from the stop sign.

Oh well. Yeah, I’m old.
Of course, you are correct that the Hold Assist is not necessary when on fairly level terrain. But, the default position for many is to just leave it on all the time, because you never know when you might be stopped for a period of time on a hill.
I don't know if the GT is the same, but the SUV has a second type of hold assist, called "Hill Hold Assist" that cannot be turned on and off like the "Hold Assist". "Hill Hold Assist" always engages when you fully engage the brake pedal. When you lift off the brake pedal the car holds itself in position for a few seconds, giving you time to transfer your foot to the accelerator and depress, before it releases automatically. The unsolved issue for drivers is that, as many of us might do, as you approach the top of a hill, you might decelerate enough so that gravity brings you to a stop. In that case, neither HA or HHA will engage, and--surprise!--you start to roll back. Again, no problem for someone accustomed to a manual transmission. The e-tron is a curious mix of ICE-like automatic and manual behavior. It is its own beast.
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Of course, you are correct that the Hold Assist is not necessary when on fairly level terrain. But, the default position for many is to just leave it on all the time, because you never know then you might be stopped for a period of time on a hill.
I don't know if the GT is the same, but the SUV has a second type of hold assist, called "Hill Hold Assist" that cannot be turned on and off like the "Hold Assist". "Hill Hold Assist" always engages when you fully engage the brake pedal. When you lift off the brake pedal the car holds itself in position for a few seconds, giving you time to transfer your foot to the accelerator and depress, before it releases automatically. The unsolved issue for drivers is that, as many of us might do, as you approach the top of a hill, you might decelerate enough so that gravity brings you to a stop. In that case, neither HA or HHA will engage, and--surprise!--you start to roll back. Again, no problem for someone accustomed to a manual transmission. The e-tron is a curious mix of ICE-like automatic and manual behavior. It is its own beast.
Sounds like it. As always, I am grateful for your thoughtful response. I always enjoy reading your posts and seem to take away some new knowledge each time. Hope the rest of your week is awesome!
The first car I had the brake hold feature on was my 2014 Mercedes E350 wagon (W212). You just pump the brake a little harder after a stop and you can let go of it until you're ready to roll off the stop. I absolutely love this feature and used it daily all the time. The way it was implemented is beautifully intuitive and gives your foot a rest at the stop light.

My next car, a 6-speed Golf R has auto hold which engages all the time when the car stops. I like it but it makes it hard (see. impossible) to start without applying throttle. When I was trying to teach my son on it I couldn't understand why he kept stalling the car. He never gave enough gas to disengage the auto hold. Fortunately it can be turned off for training purposes, otherwise the system works as advertised and it is a must with manuals without mechanical e-brake.

My wife's 2020 A6 Allroad does not have auto hold, not in any shape or form and I miss it immensely. The only way you can make the car stop and hold at a stop light is via the adaptive cruise if it brings the car to a complete stop it will hold it until you hit the accelerator. Nowhere near as useful as the Mercedes implementation which I found the best one, bar none.

Then the e-tron GT came along it has the exact same implementation as my trusty ewagon. I love it! I love that we don't have recuperation on the accelerator unless I want it on downhill slopes or while modulating in town and I love that we have creep from stop along with brake hold. So I've been using the exact same brake hold that is on the e-tron for almost a decade over 200k miles (my dad's S-class has the exact same setup from 2012) and I'm so glad this car has it.

The only thing my 8+ year old Mercedes still does better is it does not need me to put it in park assist mode to search for parking spots, it just does it automatically. I don't know how Mercedes figured that out a decade ago and Audi still makes me push a button.
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Sounds like it. As always, I am grateful for your thoughtful response. I always enjoy reading your posts and seem to take away some new knowledge each time. Hope the rest of your week is awesome!
Thanks! I find trying to answer these questions is a great way to sort things out in my own mind. As I said, the e tron is its own beast.
Hi Everyone,

I just got an E-Tron GT at Califonia Irvine last month, Kemora Gray with full packages of Prestige.

Does anyone meet this issue:
3 times, when I put autohold at the traffic light, the car jumped from D to P without any notice, I'm pretty sure no one touched the gear handle or door handle, and I try to reproduce the problem but didn't find any method, it looks like random...
This has been happening to me as well on a new etron GT. 1 time at a stop sign it went into neutral. Twice today at stop lights it went into park. Dealer seems to think I’m crazy. I’m not sure what this ‘auto hold’ feature is but I never intentionally turned it on. I will have to look at the manual to see how to turn it off and if that makes a difference. Thanks for the thread!
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This has been happening to me as well on a new etron GT. 1 time at a stop sign it went into neutral. Twice today at stop lights it went into park. Dealer seems to think I’m crazy. I’m not sure what this ‘auto hold’ feature is but I never intentionally turned it on. I will have to look at the manual to see how to turn it off and if that makes a difference. Thanks for the thread!

I was trying to find if same issue happened on Taycans...
In the Etron Quattro, two "features' are involved. The Audi naming for them are "Hold Assist" and "Hill Hold Assist".

1) Hill Hold Assist: a) cannot be turned on or off; b) is activated depending upon what gear you are in (D/R) and whether you are pointed uphill or downhill; 3) when activated, it will lock the mechanical brakes for a couple of seconds to give you a chance to switch your foot from the brake pedal to the accelerator pedal, thus preventing you from "free rolling" forwards or backwards.

2) Hold Assist: a) you can turn it off via the MMI; b) when you do a "hard brake" with the brake pedal, the mechanical brakes will lock and will not release until you touch the accelerator pedal.

This may be different in the GT. The GT cannot "free roll" like the Quattro because the GT uses PSM (Permanent Synchronous Magnetic) motors, while the Quattro uses ASM (ASynchronous Magnetic) motors, which can be "fully" turned off when power is removed. Since Audi advertises that the GT can "coast" I suspect Audi has some special tricks it applies when dealing with "stationary" situations for the GT.
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I was driving home from Beverly Hills this morning and as I exited the 101 Freeway at Kanan and stopped at the off ramp traffic light, when I pushed the brake to put on autohold, the car turned itself off!

I've got 1150 miles on the GT and I had about 20% battery life left. When the light turned green I realized what had happened so I put it in neutral and hit the starter button and was on my way.

But I sure don't like losing power and getting turned off.

Has this happened to anyone else?
I was driving home from Beverly Hills this morning and as I exited the 101 Freeway at Kanan and stopped at the off ramp traffic light, when I pushed the brake to put on autohold, the car turned itself off!

I've got 1150 miles on the GT and I had about 20% battery life left. When the light turned green I realized what had happened so I put it in neutral and hit the starter button and was on my way.

But I sure don't like losing power and getting turned off.

Has this happened to anyone else?
Do you mean the car totally power off? or the transmission just turns back to P?
Do you mean the car totally power off? or the transmission just turns back to P?
It powered off. I tried to put in back in drive but nothing happened.
This has been happening to me as well on a new etron GT. 1 time at a stop sign it went into neutral. Twice today at stop lights it went into park. Dealer seems to think I’m crazy. I’m not sure what this ‘auto hold’ feature is but I never intentionally turned it on. I will have to look at the manual to see how to turn it off and if that makes a difference. Thanks for the thread!
Make sure you use your phone to record this next time.
Dealers love to accuse us of being crazy, so we need evidence
Make sure you use your phone to record this next time.
Dealers love to accuse us of being crazy, so we need evidence
100% agreed with you! Luckily most of the time the log will get a red flag for this issue.
It powered off. I tried to put in back in drive but nothing happened.
Check my post, I lost power while I am driving in the middle of the street... the car has been in the dealer for 4 weeks...
100% agreed with you! Luckily most of the time the log will get a red flag for this issue.
I don’t think this shows up in the log - maintenance said the log showed no errors…
I experienced the same issue as OP described, except in my case, I did not engage the "Hold Assist" function in the GT. Instead, I was stopped at a stop light waiting for a left turn, and the car automatically engaged the parking brake. I only noticed it when the accelerator pedal didn't work when the light turned green. This happened twice in one night (stopped at a light/stop-sign both times), but I noticed the noise of the electromechanical brakes applying the second time, and was able to quickly engage Drive mode again to get going.

Anyone have any luck with remediation at a dealer? I'm considering bringing it in, so I'm curious if anybody has had any traction on getting this issue resolved.
Happened to me as well several times. Can't quite figure out a pattern yet...wonder if driving assistance causes it... I usually have it turned off but maybe few times it was on it happened.. will see if I can find a pattern... I think car is trying to be smart about something.. anyways.. pls update of anyone figures out why this is happening. Thanks!
Updated: Maybe here is the reason:
The autohold is not very easy to active for EtronGT, so sometimes we totally brake the car there but without the A light on, if we are not holding the brake, the vehicle will automatically shift to P, I test it many times, and I believe this is the reason, for now...
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My GT also jumped into neutral at a red light today too. I thought I was going crazy.
Posted this in a couple of other threads, seems the 'going to park after a stop' issue has a fix. Not sure if auto hold related or not. In my experience, I didn't have auto hold activated.
I'm contacting my dealer shortly to see if they can apply.
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