Auto Stop/Start ON & OFF button DOES exist...

quailallstar · Apr 3, 2018

Browsing on GM's China press site I came across a Cruze Hatch interior shot. You can clearly see the button all the way to the left (closest to the driver) is indeed an Auto Stop/Start ON & OFF button! Followed to the right by the traction control button and then the parking sensor buttons for the front and also the rear.

The question of the year is... How can we get our hands on this button in order to reverse engineer and hopefully figure out a way to install this?

Source: http://media.gm.com/media/cn/en/chevrolet/vehicles/Cruze-HB/2018.html

Discuss!

carbon02 · Apr 3, 2018

Online manuals for GEN1 cruzes also mention an on/off relay. I think it would take some time reading service information to see if there is a relay that could be removed to force the system into thinking that stop start could not activate.

My local library has switched back to Alldata but I can't seem to connect personal computer devices. Anyone have the electrical drawing of the start stop system?

There's been several posts on the control conditions, but I haven't seen the control circuit. Does the BCM control a relay that could be removed? Guessing maybe not that easy, but if someone has access to this please post.

snowwy66 · Apr 3, 2018

I would assume that the system would be tied in to the same starter relay. And controlled by whatever control module that runs the engine. Used to be called ECM but now i think it's called PCM. And since there's software that can reflash the computer to turn it off.

THat chinese model looks like it has 4 switches where as we only have 2.

ChevyGuy · Apr 4, 2018

Odd are, its all done in code. There is no special relay. The ones built for China are likely running different code in their modules. I don't think those cars are built in the US or Mexico factories that supply the US.

This would most likely be something like a "tune" to remove the start/stop.

llbanks522 · Apr 4, 2018

How about Trifecta or BNR coming up with a “inexpensive Tune” that only shuts off the auto stop/start - No other changes? Would that be illegal? It would void your warranty if the dealership found it.

rry3158652 · Apr 4, 2018

2018 CHBTD here, I am not a big fan of the auto start/stop but am getting used to it. I am wondering what specifically people dislike about it so much.
I have read 1 post with a specific concern,that was pulling out into traffic from a stop( can’t remember details) wondering what others have?

llbanks522 · Apr 4, 2018

I had a similar problem to the one you mention above. Shortly after purchasing my 2017 LT I was in city traffic trying to find an address in an area that I was not familiar with. Stopping half way in the intersection to make a turn the AS/S engaged and the hesitation trying to turn it front of the oncoming traffic was really unsettling. The restarting of the engine is not very smooth (at least in my car). Also on this trip the car jumped a little bit forward a couple of times when restarting from the stop. I truly do not like the AS/S feature and now always drive in L6 unless I forget to shift into it, but don’t worry I’m reminded of that at the first traffic light. 75% of my driving is in city situations. GM could have easily given us that “off button feature” here in the States but chose not to do so, WHY I don’t know? Fortunately we do have the “L6” option which is a slightly bigger “PITA” then just pushing a button.

IPhantom · Apr 4, 2018

Oh you guys don't have that? Standard in China version. BUT it is switching it off only until the next manual start. On is default, i wish it would be the other way around. However my start/stop function is rarely working, since i can get the preconditions to be fulfilled, so it doesn't matter much to me.
One of the buttons is parking assist (not parking sensors separately) by the way, it basically scans the surrounding at tells you what to do when parking.

quailallstar · Apr 4, 2018

IPhantom said:
Oh you guys don't have that? Standard in China version. BUT it is switching it off only until the next manual start. On is default, i wish it would be the other way around. However my start/stop function is rarely working, since i can get the preconditions to be fulfilled, so it doesn't matter much to me.
One of the buttons is parking assist (not parking sensors separately) by the way, it basically scans the surrounding at tells you what to do when parking.

View attachment 259617

Thanks for posting this! Is there any way you could tell us the part numbers for the two buttons closest to the left. The auto stop/start and traction control, please? We would need to install both because the US model has the traction control where your auto stop/start is located.

jblackburn · Apr 4, 2018

I've just gotten used to moving it down to "L" in constant stop-and-go traffic like the parking lot that is I95. Not a big deal for me.

I happen to love AS/S in city driving. Great when sitting at a light, etc. When I see an opportunity to move off, I let up on the brake pre-emptively and I'm off.

Don Hamilton · Apr 6, 2018

Drive sneaky to fool the auto-stop. When I stop at a light I back off on the brake pedal pressure just enough that the car doesn't move ahead again and the stop-start thing doesn't happen.

llbanks522 · Apr 6, 2018

Yeah, I might give that another try WHEN SPRING “REALLY” ARRIVES in NJ so that the temperature always stays above 40F and the AS/S is active. I will not use it if I’m going to an area that I’m not familiar with.

Premier17 · Apr 10, 2018

Wow. Off topic, but the Chinese Model ALSO has an SD card slot and dual USB ports under the radio. Why do the U.S. versions always get the shaft for the things consumers WANT?! (HID/LED lighting also comes to mind that other countries get on the Cruze, that the U.S. Does not!)

IPhantom · Apr 10, 2018

The SDcard slot is occupied with the satnav map though. Which is a pretty nifty design, card in and the icon appears on the screen. Didn't try if it works for storage.
The USB ports are rather annoying as they always connect for data transfer not charging only. Ended up using a charging adapter in the cigarette lighter.
The flaps on the US model would bother me though.

firehawk618 · Jul 1, 2018

Personally I would LOVE an option to disable auto stop / start in my car vs doing it manually every time by selecting A9.

I do use it from time to time but when I know I'm just stopping at a 4 way then going to proceed I despise how fast it shuts the engine off.

The other huge annoyance is when pulling into my driveway if I haven't disabled it via the shifter the car will shut off then restart as I put the car in Park.

The other thing I do not care for is at night you can clearly see the lights go dim as the car re-starts. I was under the impression the cars had a capacitor to eliminate this when re-starting. I guess not.

A simple option to either disable it or select the initial delay to stop would help a lot in my situation.

Terrible implementation by GM in my opinion.

snowwy66 · Jul 1, 2018

The 19 models have a button now.

Too bad we can't get that feature added.

Cruzen18 · Jul 1, 2018

snowwy66 said:
The 19 models have a button now.

They must have heard and/or read all the angst here regarding this feature. Haha!

Should be a way to retrofit this to a previous model and program it to work, I would think.

Cruzen18 · Jul 3, 2018

You get into this, please make sure to do a write up and/or video of the process.

firehawk618 · Jul 5, 2018

I'll definitely document it if I am successful.

Chances are VERY high you'll need to have access to a PassThru tool of some sort and need to subscribe to Delco TDS for a day to download the correct calibration for whatever modules are involved. IF this is even going to be a possible retrofit.

IF these calibrations are vin locked then it simply will not work.

Ma v e n · Mar 15, 2019

I'll just leave this here. In progress.

TDCruze · Mar 16, 2019

Ma v e n said:
I'll just leave this here. In progress. View attachment 269837

Looks like you are on your way, definitely keep us posted!

firehawk618 said:
I have not tried it yet and it's not on my radar as of now.

As a matter of fact I'm removing the retrofit I did for auto up driver window. I have two reasons for this both are related to the BCM programming required to make it work.

1. The DIC now only shows DEF OK no matter the level. Even when it's critically low.
2. The car immediately starts no matter the ambient temperature. No time for glow resulting in a rough running engine for a couple seconds when it's really cold out.

Believe it or not I can say with 100% certainty that the BCM plays a much bigger role in the overall diesel functions of the car than I would have ever imagined.

I flashed my BCM back to stock and now the engine will delay a second or two before starting as it should and my DEF gauge is back to normal. As soon as I re-flashed it I got an alert about low def fluid and speed limited in xxx miles. It was at 14%. I'm just dealing with no drivers window for now until I can re-install the hardware I removed.

Interesting. So you re-flashed your BCM from that of another car that had the window feature you were trying to get?

I would guess that the DEF level is passed through the BCM to the dash display and also that the glow plugs must get their run command/timing from the start command that must also originate with the BCM?

This is why I could see the AS/S disable being hard to implement as no pre-2019 vehicles had this as an option.

Twisted Z · Apr 4, 2019

come on Chad figure this out!

Housleyds · Apr 5, 2021

Im not shifting it manually and it does shift differently.

Iamantman · Apr 7, 2021

You're not understanding what he's saying. You don't shift manually, it's an automatic. When you put the gear shifter in L you can use the little + and - symbols on top of the shifter to change it to L6 which just means it will utilize all 6 gears so it's the same thing as putting it in D.

The only difference is auto/stop is disabled in this mode so a bit of a hack but it works. No change in shifting, it's identical.

Housleyds · Apr 7, 2021

Yes i am understanding. I know you dont shift manually. Im saying my transmission shifts differently AUTOMATICALLY than when its just in drive. It holds in gear longer before shifting automatically.

jblackburn · Apr 7, 2021

That's on your driving habits, then. It doesn't.

jblackburn · Apr 8, 2021

They do take a good couple tanks of gas to adjust the trans shift points to a new driver. But I’ve driven/rented like 10 of the things from 2016-19 MYs as well as my own and none of them shift appreciably differently in L mode.

When my wife has been driving my car for longer periods, she’s a bit of a lead foot so it will run out 2nd and 3rd to a higher RPM than normal.

Auto Stop/Start ON & OFF button DOES exist...

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