Hold mode - brake pedal kick

[rfc805]

Is this something that needs calibration, or does this happen to everyone? If I put the car in "stop mode: hold", when you come to a stop (or you're creeping), the brake pedal kicks back similar to how ABS behaves. Also pretty noisy as the brakes grab/release constantly while creeping.

The pedal thing seems like something that could/should maybe be calibrated.

Kind of wished there was a mode more similar to what I had in the Taycan, which is roll mode, unless you press the pedal all the way and then it engages hold. Probably a solution to this problem where the actuator that's handling the pedal hold if you try to threshold it makes it kick back like this.

 

[tonybot]

Is this something that needs calibration, or does this happen to everyone? If I put the car in "stop mode: hold", when you come to a stop (or you're creeping), the brake pedal kicks back similar to how ABS behaves. Also pretty noisy as the brakes grab/release constantly while creeping.

The pedal thing seems like something that could/should maybe be calibrated.

Kind of wished there was a mode more similar to what I had in the Taycan, which is roll mode, unless you press the pedal all the way and then it engages hold. Probably a solution to this problem where the actuator that's handling the pedal hold if you try to threshold it makes it kick back like this.

I haven’t played it with yet but have you tried the stop mode roll and creep toggle under vehicle settings?

I have hold as well and it physically moves the break pedal. I have learned to give a small nudge on the accelerator before deeper press to take off but it still makes that ABS type noise as breaks are being released.

 

[koflo]

This is normal behavior. You’ll get used to it but if you’re coming from something like Tesla, it does feel a little weird at first.

 

[rfc805]

I haven’t played it with yet but have you tried the stop mode roll and creep toggle under vehicle settings?

I have hold as well and it physically moves the break pedal. I have learned to give a small nudge on the accelerator before deeper press to take off but it still makes that ABS type noise as breaks are being released.

Yeah, if you put it in roll it doesn't do this. When in stop mode, I'm guessing there's an actuator on the pedal, and right as you reach a stop, the pedal kicks out from your foot a bit. It ends up feeling a bit like ABS.

It seems like it's just slightly mis-calibrated, and needs to engage slightly lower in the pedal travel so that it holds instead of adding braking. I'm guessing it's just very hard to figure out how to get that position right especially as the brakes wear over time, or even just different temperatures.

It wouldn't be so off-putting except it feels a lot like ABS engagement, and my muscle memory is to try to avoid that. But yeah, also the noise isn't pleasant if you're creeping along in traffic or just up to a parking stop, etc.

It's certainly not the worst, but it's something that could be better for sure. I saw one review who thought it was engine cogging - but, it's definitely the brakes being engaged.

 

[kpbhat]

I have chosen “hold” Option and have never had the issue . So may be something you should check with service as the brake should release as soon as you accelerate. Never had the ABS chatter happen to me or may be I am too light on my accelerator.

 

[rfc805]

It's not when you accelerate, it's when you're on the brakes coming to a stop that the brake pedal kicks - right before you fully stop and it holds.

When you accelerate, if you're going very slowly, it's that the brake does release, but if you're kind of feathering it to creep, it will be grabbing/releasing and making that kind of chonk noise repeatedly as it does so.

 

[BitOfBytes]

I have the same issue on accelerating from a stop, right before fully stopping, and driving very slowly (1mph). All brake-hold related, and goes away when in roll mode.

My 2023 Touring has been to the service center many times (for other reasons). I've mentioned it in passing to service, and they say it's "normal".

During the service visits, I've driven 5+ different loaners (all 2022 GT models), and they all seem to exhibit different degrees of this behavior. It ranges from a very light 'click' with no physical sensation to my car with a 'clonk' + physical jerk. The physical jerk can be minimized depending on accelerator pedal precision... a light tap/hold seems to minimize it.

My car has been the worst of the 6 cars I've driven. No matter how lightly I ease the accelerator, I always get a clonk + jerk. I showed my service advisor and we compared the loaner to my car - he saw my issue and inquired for me, but I was told they are unable to perform that type of calibration. Maybe I'll ask again on my next service visit.

 

[kpbhat]

I would think/assume car is thinking you are going to stop if you are trying to roll at 1mph. I have never gone that slow. If I am driving at say 40mph and want to stop; I let go of accelerator and car goes on regen to come to a complete stop -without any jerks. if that’s same for you, then it’s the logical issue where computer is deciding between allowing to creep and applying brakes. If that is the case, it’s better to disable auto brake hold and go to manual braking.

 

[rfc805]

Yeah, which is why I mention I wish it worked like the Taycan, where you engage hold by pressing the brake pedal past a stop, otherwise it doesn't automatically engage.

You've never gone slow when you're pulling up to a curb in a parking spot, or creeping up to the front edge of your garage, or backing out around an obstacle that you can't see past?

Not suggesting driving down the road that way, just when you're doing these stops, you just get a bunch of 'clonk, clonk, clonk' as it tries to grab the brakes. There's no easy way to switch to roll mode (it won't let you switch it without going into park)

 

[VVS Wraith]

It's not when you accelerate, it's when you're on the brakes coming to a stop that the brake pedal kicks - right before you fully stop and it holds.

When you accelerate, if you're going very slowly, it's that the brake does release, but if you're kind of feathering it to creep, it will be grabbing/releasing and making that kind of chonk noise repeatedly as it does so.

I had this same issue and I hate it . I had my service tech take a look at it, and he said it was normal. I then asked if it was something that could be fixed/calibrated with future software updates, and he said it couldn't and that it was a hardware thing.

 

[rfc805]

Well, I believe him on it not being something they can calibrate - I don't believe it's actually a hardware thing. The challenge is it would have to constantly re-calibrate itself as the brakes wear over time, or other things which impact the position. If they get the position calibrated just right, the pedal wouldn't have to kick away as it does.

 

[kpbhat]

Yeah, which is why I mention I wish it worked like the Taycan, where you engage hold by pressing the brake pedal past a stop, otherwise it doesn't automatically engage.

You've never gone slow when you're pulling up to a curb in a parking spot, or creeping up to the front edge of your garage, or backing out around an obstacle that you can't see past?

Not suggesting driving down the road that way, just when you're doing these stops, you just get a bunch of 'clonk, clonk, clonk' as it tries to grab the brakes. There's no easy way to switch to roll mode (it won't let you switch it without going into park)

Thinking about it, you are absolutely right. So all I can say is it’s not happening with my car. So now I am also clueless as to why comes cars are having this issue. May be I am just lucky.