Idle Stop and Go disable

[JohnL]

There are several threads on this subject so I apologize if this method has been mentioned and I missed it. Anyway, I've hated this 'feature' since I bought the car. I did this mod not long after I purchased the car so it has been in there for several months and around 11,000 miles with no issues. I did this on my 2019 GT2 but I have to believe the same mod will work with most, if not all, Stingers.

I managed to find the schematic for the switch on the console and I noted that there is a 220 ohm resistor in series with the switch. I'm guessing that the engineers might have done this so that simply shorting the connector wouldn't work (I never tried that). I happened to have a 220 ohm 1/4 watt resistor so I inserted that into the connector and, voila, the ISG function is now disabled. The attached photos show the connector and the resistor in place. As you can see the resistor is placed between the black and yellow wires (pins 28 and 32).

If you wonder why I did it this way all I can say is 1) I didn't like the idea of sticking something in the button to keep it pressed and 2) I didn't want to dismantle the switch and stick tape or something else to keep the button pressed. I know there's a module for sale that does this and some other functions but you need to cut wires in order to install it and I didn't really care for that solution. This has the advantage that the resistor is held in place by friction alone and simply removing the resistor restores the original function of the switch.

 

[Luc343]

Nice. I think so many people must have complained about the idle stop and go that they removed the switch on the 2020 model or maybe the Australian stingers were spared the frustration of having the button. I don't have that button in my car.

I'm actually not sure how to switch this feature on. When I put the car into eco mode, it does not switch off the engine when I have stopped at a light.

 

[redtrack]

You can also insert a thin wire strap, on the side on the switch, to keep it pushed in. very simple, very easy.
In my Stinger I openned the switch accordingly with one thread in this forum, too complicated, but works. Then in my Telluride I did it with the wire strap...

 

[Avon]

Do you have any additional pictures that give a wider perspective? I have no idea where that harness is located in the car. Thanks.

 

[JohnL]

Do you have any additional pictures that give a wider perspective? I have no idea where that harness is located in the car. Thanks.

I guess I should have explained it better. The harness plugs into the switch assembly in the center console. Use a plastic prying tool. Open the console cover and start prying up where you see the break in the trim. The console trim is only held on with plastic clips. I went from side to side starting at the back until the whole top piece popped off. I believe there are 8 clips that hold it down.

The pictures are from my GT2. I know that other trim levels have fewer switches. They may or may not use the same connectors and pins. The service manual doesn't seem to differentiate between the trim levels so I can't be sure.

 

[JohnL]

Nice. I think so many people must have complained about the idle stop and go that they removed the switch on the 2020 model or maybe the Australian stingers were spared the frustration of having the button. I don't have that button in my car.

I'm actually not sure how to switch this feature on. When I put the car into eco mode, it does not switch off the engine when I have stopped at a light.

I wonder if you just don't have this 'feature'. I don't know for sure, but I suspect that the only reason we have this in the USA is our EPA and their mileage and emissions goals have driven car manufacturers to do this. Perhaps your government is not as strict. If so, that's good for you.

 

[Spaceme17]

Nice. Just ordered a resistor for 0.14 cents. Gonna try this out. Thanks!

 

[JohnL]

You can also insert a thin wire strap, on the side on the switch, to keep it pushed in. very simple, very easy.
In my Stinger I openned the switch accordingly with one thread in this forum, too complicated, but works. Then in my Telluride I did it with the wire strap...

There are several ways to accomplish the same goal. Putting something into the switch is pretty easy, but somewhat inelegant (which is kinda crazy. It is just a car after all). Dismantling the switch, like you did, is quite a bit more difficult, but elegant. Purchasing the module that makes the function stick is elegant, but more expensive and you have to cut wires to install it. I just figured I'd throw out one more way to do it. To each their own.

 

[Luc343]

Nice. Just ordered a resistor for 0.14 cents. Gonna try this out. Thanks!

You might be right. I cannot find this at all. I have the fully loaded carbon fibre Edition. Even has bendy lights.

 

[JohnL]

You might be right. I cannot find this at all. I have the fully loaded carbon fibre Edition. Even has bendy lights.

I think you meant to reply to my comment about you folks down under not having a government that forced the car manufacturers to implement this.

My biggest problems with these systems is twofold. First, you have additional wear and tear on the starter. If you're in stop and go traffic as you crawl through a busy city the car is constantly starting and shutting off. So someone who routinely drives in that kind of traffic has the starter engaging many (10,20, 30 or more?) times in a single trip where a car without this system is started once at the beginning of the trip. The other issue I have is that the entire electrical load of the car is handled by the battery during the time that the engine is turned off which adds more cycles and therefore more wear and tear on the battery. And I believe that the batteries in these Stingers are rather expensive.

We do all of this to save a thimble full of gas at each stop? Nah, I'll pass.

 

[Spaceme17]

I think you meant to reply to my comment about you folks down under not having a government that forced the car manufacturers to implement this.

My biggest problems with these systems is twofold. First, you have additional wear and tear on the starter. If you're in stop and go traffic as you crawl through a busy city the car is constantly starting and shutting off. So someone who routinely drives in that kind of traffic has the starter engaging many (10,20, 30 or more?) times in a single trip where a car without this system is started once at the beginning of the trip. The other issue I have is that the entire electrical load of the car is handled by the battery during the time that the engine is turned off which adds more cycles and therefore more wear and tear on the battery. And I believe that the batteries in these Stingers are rather expensive.

We do all of this to save a thimble full of gas at each stop? Nah, I'll pass.

No worries on it wearing out the starter. ISG starters are made for this and have no higher failure rate than any other starters. It is a common myth no supported by the evidence.

Same thing for electrical load on the car. Automobile engineers account for these things.

 

[Luc343]

I think you meant to reply to my comment about you folks down under not having a government that forced the car manufacturers to implement this.

My biggest problems with these systems is twofold. First, you have additional wear and tear on the starter. If you're in stop and go traffic as you crawl through a busy city the car is constantly starting and shutting off. So someone who routinely drives in that kind of traffic has the starter engaging many (10,20, 30 or more?) times in a single trip where a car without this system is started once at the beginning of the trip. The other issue I have is that the entire electrical load of the car is handled by the battery during the time that the engine is turned off which adds more cycles and therefore more wear and tear on the battery. And I believe that the batteries in these Stingers are rather expensive.

We do all of this to save a thimble full of gas at each stop? Nah, I'll pass.

I'm not a big fan of idle stop and go, but I did want to try it out to see if it is as annoying as everyone says it is.

I saw a video from the (engineering explained) guy who said you only get a benefit for turning the engine off when idling, if the engine is off for more then 7 seconds, otherwise it is better to leave it on. Most of our red traffic lights are much longer then 7 seconds.

 

[ThunderBoy724]

I try to remember to shut it off but sometimes I forget . Usually when I get to the corner at the end of my street the yellow"A" light comes on so I press the button. One time I pulled into my garage and stopped and before I could press the "P" button the dumb thing shut the engine off. When I pressed the park button it restarted itself just so I could shut it off again.

 

[LegacyGTv2.0]

I'm not a big fan of idle stop and go, but I did want to try it out to see if it is as annoying as everyone says it is.

I saw a video from the (engineering explained) guy who said you only get a benefit for turning the engine off when idling, if the engine is off for more then 7 seconds, otherwise it is better to leave it on. Most of our red traffic lights are much longer then 7 seconds.

It was super nice for the DC traffic lights with pedestrian signals. When the crosswalk signal starts counting down from 70 you might as well shut the car off. The car will typically restart after 20s if you have the AC on. Disable that as well.

 

[ThunderBoy724]

As I posted before the dumb ISG has caught me as I pulled into the garage and shut the engine off before I could press park and then the engine restarts so I can shut it off again. It has done this to me several times and so I thought I would give this mod a try since it seemed pretty simple to me.

Just as an FYI the resistors I ordered came with really thin leads. I didn't think anything about it and was able to insert the resistor into the harness and it stayed in there. What I didn't notice was the yellow wire is much thinner than the black wire and my thin lead resistor wasn't making contact with the pin. I went for a test drive and the engine still turned off so when I took it apart again I noticed the smaller yellow wire. I put another piece of wire in there to fill the gap and then put the resistor back in and now it works, no more ISG.

Thanks JohnL for figuring this out. I hope my little bit of info helps others too. Good luck everyone!

 

[Trojan Thunder]

I'm not a big fan of idle stop and go, but I did want to try it out to see if it is as annoying as everyone says it is.

I saw a video from the (engineering explained) guy who said you only get a benefit for turning the engine off when idling, if the engine is off for more then 7 seconds, otherwise it is better to leave it on. Most of our red traffic lights are much longer then 7 seconds.

Australian cars have never had ISG

 

[DrMario86]

Just stumbled over this post and I like the balance of clean visuals and easily removable. Where do y'all find the tiny resistors outside Amazon and Ebay? All our Radio Shacks closed and the local hobby shop is mostly models and drones. Would a hardware store have them in singles or part of a kit? Seems silly to ship something that weighs less than a gram.

 

[AWDGT2]

@JohnL
I wish I would of seen this sooner. That 220 ohm resister is in the system, Its a current limiting resistor put in there for safety in case that switch gets shorted out. If it's in the schematic it's in the car. Probably closer to the micro controller or ECU that handles that function. The *action is flip flop. It's a simple logic driven event that states if something is in one state, make it the other every time the circuit is closed, (ie.. push the button)
Now, what you did was actually short the button out across 28 and 32 but with some resistance. That total now is 440 ohms, and for whatever reason, the car is seeing that as a constant closed circuit (Which it is). I think you got lucky but my hat is off to you my friend, that was an awesome discovery!
edit.. I'd also like to see how high resistance would work. Going up is safer but at some point, no current will flow and that auto off will see it as an open. Then the only way to shut it off would be to push the button again.

 

[SoCalSHO]

I may order some of these resistors, they come in multi packs. If I do end up buying them, I will share the extras. But right now, i use a piece of paper.

 

[mfenske]

To confirm we need a 440 ohm resistor?