Car moves off without pressing accelerator!

Faults and Technical chat for the Volkswagen ID.3
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Affle
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Joined: Sat Sep 03, 2022 3:45 pm

Post by Affle »

My car does this consistently. Get in the car, but leave the driver's door open. Foot on brake, select B mode. Foot off brake and the car moves off without pressing the accelerator!

Kryten
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Post by Kryten »

Mine does this, perfect for me in traffic. Think you can turn it off though.
vanb
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Post by vanb »

Affle wrote: Tue Nov 19, 2024 2:46 pm My car does this consistently. Get in the car, but leave the driver's door open. Foot on brake, select B mode. Foot off brake and the car moves off without pressing the accelerator!
Perhaps you’ve got ‘Auto Hold’ off???
Midgex
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Post by Midgex »

Automatic cars always have, I think. Long ago it was because drive was though a torque converter, and it used to be nice to creep in traffic.
Push the brake down hard, and see "Hold" in the display behind the steering wheel.
Zoro
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Location: Sheffield

Post by Zoro »

I use this feature to park my car in my garage all the time. When I have parked it I go into neutral, then get out which will automatically put the parking brake on.
2022 Family pro
id3_life
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Post by id3_life »

As does every other car it's called creep. Imagine having to hit the accelerator to move the car when queuing or during maneuvering. That would be dangerous.
Sharon Simmons
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Post by Sharon Simmons »

I’ve noticed the same thing with my hybrid. In B mode, the car tends to creep forward a little once you let go of the brake, even without pressing the gas. It’s pretty much a feature to help with regenerative braking, so it slows down the car automatically. It took me a bit to get used to it, but now I kind of like it for city driving where I’m constantly stopping and starting. It’s definitely something to keep in mind when getting in and out of the car.
oldgoat
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Post by oldgoat »

The salient point here isn't that the car's creep function, which is understood - but the opening of the door being linked to unintended acceleration.

Just a couple of days ago, my wife moved the car about ten feet forward outside the house, at the main-road end of a cul-de-sac. She braked to a full stop, attempted to get out the car, and with the door open and R foot on the tarmac, the car accelerated. Thrown off balance trying to get back in, she hit the accelerator rather than the brake, the car shot forward and t-boned a 4x4 on the main road. Both vehicles totalled, she was thrown out the car with the impact (door open, remember) - miraculously with only a minor bump to the head but badly shaken,

Something similar happened to me months ago - reversing slowly to a public charger, I stopped dead, feet off the pedals, opened the door for a look behind, and the car started moving backwards - needed a hard stamp on the brake to stop it.

Does anyone know if VW have ever been made aware of this?
sidehaas
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Post by sidehaas »

oldgoat wrote: Wed Nov 20, 2024 11:04 am The salient point here isn't that the car's creep function, which is understood - but the opening of the door being linked to unintended acceleration.

Just a couple of days ago, my wife moved the car about ten feet forward outside the house, at the main-road end of a cul-de-sac. She braked to a full stop, attempted to get out the car, and with the door open and R foot on the tarmac, the car accelerated. Thrown off balance trying to get back in, she hit the accelerator rather than the brake, the car shot forward and t-boned a 4x4 on the main road. Both vehicles totalled, she was thrown out the car with the impact (door open, remember) - miraculously with only a minor bump to the head but badly shaken,

Something similar happened to me months ago - reversing slowly to a public charger, I stopped dead, feet off the pedals, opened the door for a look behind, and the car started moving backwards - needed a hard stamp on the brake to stop it.

Does anyone know if VW have ever been made aware of this?
If that's actually what happened, it must be a specific fault with your car. You need to get it checked over.

It's possible to brake to a stop without engaging autohold if you press the brake lightly, and if you take your foot off the brake without pressing P the car will then move forward again, creeping. However if you open the driver's door it should always immediately turn off, same as if you have pressed P (for what it's worth I find this quite annoying because it prevents me from opening the door to check my distance when manoeuvring).
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Affle
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Post by Affle »

I agree about automatics creeping. But it shouldn't be related to the door being open. If anything the door being open should prevent the car from moving at all. And auto hold didn't work either. My car's due for service shortly. I'll talk to them and find out if there's a software update that would fix it. It's dangerous if the driver isn't expecting it to happen - as oldgoat's wife sadly found out to her cost. Hope she's recovered.
Affle
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Post by Affle »

Kryten wrote: Tue Nov 19, 2024 4:14 pm Mine does this, perfect for me in traffic. Think you can turn it off though.
So you drive in traffic with the door open?????
Affle
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Post by Affle »

Midgex wrote: Tue Nov 19, 2024 4:31 pm Automatic cars always have, I think. Long ago it was because drive was though a torque converter, and it used to be nice to creep in traffic.
Push the brake down hard, and see "Hold" in the display behind the steering wheel.
Auto hold didn't work. Stamp on the brake, release it and the car moves off again.
Affle
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Post by Affle »

id3_life wrote: Tue Nov 19, 2024 6:29 pm As does every other car it's called creep. Imagine having to hit the accelerator to move the car when queuing or during maneuvering. That would be dangerous.
As other posts, I think you missed the point about the door being open.
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Big_GT
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Post by Big_GT »

Auto hold doesn't work if the door is open.
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oldgoat
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Post by oldgoat »

I contacted VW who said get it checked over by a dealer. I hadn't explained to them the car was written off and is no longer with us - but out of curiosity, what sort of diagnostics would the car hold for something like this? Pardon my ignorance here, but is there some sort of event log, like an aircraft black box? Would be particularly interested if there's any record of the collision avoidance / emergency braking thing, which apparently never kicked in at all.
oldgoat
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Post by oldgoat »

Big_GT wrote: Thu Nov 21, 2024 3:53 pm Auto hold doesn't work if the door is open.
Why not?
Midgex
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Post by Midgex »

I think that suggestions one should not get out of a vehicle without engaging a parking brake; and that when manouvering by all means open the door, but don't do so without a foot on the brake pedal, would be uncontroversial.
oldgoat
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Post by oldgoat »

Midgex wrote: Thu Nov 21, 2024 5:17 pm I think that suggestions one should not get out of a vehicle without engaging a parking brake; and that when manouvering by all means open the door, but don't do so without a foot on the brake pedal, would be uncontroversial.
Perhaps so, but the act of opening a door as a command input for a car to accelerate, is certainly controversial.
Affle
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Post by Affle »

oldgoat wrote: Sat Nov 23, 2024 9:49 pm
Midgex wrote: Thu Nov 21, 2024 5:17 pm I think that suggestions one should not get out of a vehicle without engaging a parking brake; and that when manouvering by all means open the door, but don't do so without a foot on the brake pedal, would be uncontroversial.
Perhaps so, but the act of opening a door as a command input for a car to accelerate, is certainly controversial.
I agree with oldgoat. In my case I was getting into the car, then started a conversation with a colleague via the open door. Tried to turn off the radio to make the conversation easier. It didn't work so thought I'd 'turn the car on' by selecting B. The car started to move as soon as I took my foot off the brake, came close to the open door hitting my colleague. Jumped on the brake. Auto hold didn't work, so nearly hit him again! That's controversial.
id3_life
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Post by id3_life »

Affle wrote: Thu Nov 21, 2024 1:34 pm
id3_life wrote: Tue Nov 19, 2024 6:29 pm As does every other car it's called creep. Imagine having to hit the accelerator to move the car when queuing or during maneuvering. That would be dangerous.
As other posts, I think you missed the point about the door being open.
I move my car when washing/vacuuming it in my yard with the doors open, just be releasing the brake.
It's a normal function of every car.
To clarify if you drive normally, stop and open the door car goes automatically into parking mode I believe.
If you have the door open and start the car you will get a quick warning on the dash (something like rolling protection will be disabled, can't remember the wording exactly) and the car will move upon releasing the brake).
My ID.3 (and thus I assume every other ID.3) functions normally, there is nothing to notify VW about.
Regarding the OP I wasn't there and especially as his wife was injured during the process I cannot comment on what happened.
We do see this in the news (toyota throttle stuck/runaway tesla/impregnated by aliens/etc.) most cases are simply driver error although hardware/software faults cannot be entirely dismissed and often lead to recalls/etc.
If anyone is so inclined this is very easy to test and would be interesting to know your results.
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