ACC with stop and go at lights

Starz26 · 08-22-2018, 02:25 AM

With ACC and stop and go enabled, if there is no vehicle in front of you and you approach a red light. Will the ACC slow you down and stop then go when green? Or does it require traffic in front of you?

Ragnarkov · 08-22-2018, 02:33 AM

it requires a vehicle in front to automatically slow you down.

But how you stop also affects how it continues. if you apply the breaks coming up to a stop, whether a car is in front of you or not, you will need to press the resume button to re-engage ACC.

If the ACC system pulls you to a complete stop, it will wait for a few moments before it disengages, but either pushing the resume button or simply pressing the gas pedal will re-engage the ACC system.

Once you know how the system works, it's a pleasure to use. I barely used the cruise in my old car, and I use it every single day with the X3.

MarkyM · 08-22-2018, 02:34 AM

Quote:

Originally Posted by Starz26

With ACC and stop and go enabled, if there is no vehicle in front of you and you approach a red light. Will the ACC slow you down and stop then go when green? Or does it require traffic in front of you?

It requires traffic in front of you, you need to brake for lights and then pull away when green, just the same with any junction

Legis · 08-22-2018, 04:00 PM

ACC and lane assist is pure pleasure in car queues. Had a two hours queue today and didn’t touch the brake or gas pedal.

BabyDriver2019 · 08-22-2018, 05:16 PM

This is one feature I wish I had in mine.

Its so relaxing to keep your foot off the brake with Auto Hold. I can imagine the comforts of ACC.

Fenders · 08-22-2018, 06:44 PM

Quote:

Originally Posted by BabyDriver2019

This is one feature I wish I had in mine.

Its so relaxing to keep your foot off the brake with Auto Hold. I can imagine the comforts of ACC.

Agreed. I switched from a stickshift Mini to the X3’s sport auto and figured that would be enough to take the edge off my typical traffic events. Auto Hold is pretty cool even if it is just throwing the car into Park. If I’d ever test driven a car with ACC stop and go, I’m sure I would have ordered it. The Mini only had auto cruise that would disengage at low speeds, and I rarely used it.

GL · 08-22-2018, 07:38 PM

Quote:

Originally Posted by Fenders

Quote:

Originally Posted by BabyDriver2019

This is one feature I wish I had in mine.

Its so relaxing to keep your foot off the brake with Auto Hold. I can imagine the comforts of ACC.

Agreed. I switched from a stickshift Mini to the X3’s sport auto and figured that would be enough to take the edge off my typical traffic events. Auto Hold is pretty cool even if it is just throwing the car into Park. If I’d ever test driven a car with ACC stop and go, I’m sure I would have ordered it. The Mini only had auto cruise that would disengage at low speeds, and I rarely used it.

Auto hold does not throw the car in park. It is actuating the brake.

Fenders · 08-22-2018, 07:56 PM

Quote:

Originally Posted by GL

Auto hold does not throw the car in park. It is actuating the brake.

Sorry for the misinfo - lazy post - meant to say it was just like that technique on other auto cars. It feels pretty seamless when auto-start/stop is disabled.

focker · 08-23-2018, 02:22 PM

Quote:

Originally Posted by GL

Auto hold does not throw the car in park. It is actuating the brake.

When I use Auto Hold with ASS it does in fact show "Park" on the dash display.

MarkyM · 08-23-2018, 02:32 PM

Quote:

Originally Posted by focker

Quote:

Originally Posted by GL

Auto hold does not throw the car in park. It is actuating the brake.

When I use Auto Hold with ASS it does in fact show "Park" on the dash display.

That symbol when in Auto Hold means the Parking Brake is on rather than Park position on the transmission but it is a bit confusing

Ragnarkov · 08-23-2018, 07:42 PM

if the gear designation letter shows p, it is in park. the auto hold engaged the (p) icon, but if its coupled with the ASS, it might put the car in park as well. I haven't payed enough attention.

however, when I use the ASS, and it stops me at a light, even on an incline, I do not move one iota. car off. says I'm in drive. so maybe it does put the car in a park state?

Fenders · 08-23-2018, 08:08 PM

Quote:

Originally Posted by Ragnarkov

if the gear designation letter shows p, it is in park. the auto hold engaged the (p) icon, but if its coupled with the ASS, it might put the car in park as well. I haven't payed enough attention.

however, when I use the ASS, and it stops me at a light, even on an incline, I do not move one iota. car off. says I'm in drive. so maybe it does put the car in a park state?

That's interesting. When we've used auto-hold at a long light on a slight grade, the brake quickly "re-grabs" a few times a minute- not sure if this is a common quirk, a calibration issue with my car, intentional as a safety check or to remind you that the car is not actually in Park. The owner's manual makes no mention of any such behavior.

Ragnarkov · 08-23-2018, 08:23 PM

Quote:

Originally Posted by Fenders

Quote:

Originally Posted by Ragnarkov

if the gear designation letter shows p, it is in park. the auto hold engaged the (p) icon, but if its coupled with the ASS, it might put the car in park as well. I haven't payed enough attention.

however, when I use the ASS, and it stops me at a light, even on an incline, I do not move one iota. car off. says I'm in drive. so maybe it does put the car in a park state?

That's interesting. When we've used auto-hold at a long light on a slight grade, the brake quickly "re-grabs" a few times a minute- not sure if this is a common quirk, a calibration issue with my car, intentional as a safety check or to remind you that the car is not actually in Park. The owner's manual makes no mention of any such behavior.

it could depend on the amount of incline. I will admit the inclines I can remember stopping on were not steep at all. there might be a threshold where by it will hold the car to a certain point, then engages the brake if it feels the car slip.

just speculating here

titomi · 08-24-2018, 01:21 AM

Auto Hold is engaging the parking brake, that's why the P light comes on. You should read the manual.

08-22-2018, 02:25 AM	#1
Starz26 Private First Class 92 Rep 184 Posts Drives: 2019 X3 M40i Join Date: Aug 2018 Location: USA iTrader: (0)	ACC with stop and go at lights With ACC and stop and go enabled, if there is no vehicle in front of you and you approach a red light. Will the ACC slow you down and stop then go when green? Or does it require traffic in front of you?
	Appreciate 0 Tweet Quote

08-22-2018, 02:33 AM	#2
Ragnarkov First Lieutenant 127 Rep 304 Posts Drives: 2018 X3 i30xdrive Join Date: Nov 2017 Location: Maple Ridge, BC iTrader: (0) Garage List 2018 BMW X3 [0.00]	ACC with stop and go at lights it requires a vehicle in front to automatically slow you down. But how you stop also affects how it continues. if you apply the breaks coming up to a stop, whether a car is in front of you or not, you will need to press the resume button to re-engage ACC. If the ACC system pulls you to a complete stop, it will wait for a few moments before it disengages, but either pushing the resume button or simply pressing the gas pedal will re-engage the ACC system. Once you know how the system works, it's a pleasure to use. I barely used the cruise in my old car, and I use it every single day with the X3.
	Appreciate 1 Starz2691.50 Quote

08-22-2018, 04:00 PM	#4
Legis Private 53 Rep 69 Posts Drives: X3 M40i Join Date: Aug 2018 Location: Sweden iTrader: (0)	ACC and lane assist is pure pleasure in car queues. Had a two hours queue today and didn’t touch the brake or gas pedal.
	Appreciate 2 thestuarts87.00 BabyDriver201929.50 Quote

08-22-2018, 05:16 PM	#5
BabyDriver2019 Enlisted Member 30 Rep 34 Posts Drives: G01 30i Alpine White Join Date: Jul 2018 Location: Houston, TX iTrader: (0)	This is one feature I wish I had in mine. Its so relaxing to keep your foot off the brake with Auto Hold. I can imagine the comforts of ACC.
	Appreciate 0 Quote

08-23-2018, 07:42 PM	#11
Ragnarkov First Lieutenant 127 Rep 304 Posts Drives: 2018 X3 i30xdrive Join Date: Nov 2017 Location: Maple Ridge, BC iTrader: (0) Garage List 2018 BMW X3 [0.00]	if the gear designation letter shows p, it is in park. the auto hold engaged the (p) icon, but if its coupled with the ASS, it might put the car in park as well. I haven't payed enough attention. however, when I use the ASS, and it stops me at a light, even on an incline, I do not move one iota. car off. says I'm in drive. so maybe it does put the car in a park state?
	Appreciate 0 Quote

08-24-2018, 01:21 AM	#14
titomi Colonel 928 Rep 2,046 Posts Drives: X3 G01 30i xDrive Join Date: Feb 2018 Location: EU iTrader: (0) Garage List 2018 X3 G01 [0.00]	Auto Hold is engaging the parking brake, that's why the P light comes on. You should read the manual. __________________ '18 G01 X3 xDrive 30i xLine, Sophisto grey, Vernasca Mocha, Adaptive
	Appreciate 0 Quote