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How to disable i-stop PERMANENTLY in 10 seconds

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300K views 45 replies 40 participants last post by  ajg  
#1 · (Edited by Moderator)
Ok, let me start off by saying why. The i-stop system is supposed to save fuel, blah blah blah, well my car hit 10,000 km today and according to the app on the car, i-stop has saved me 24 km! Wow.

This is the wear and tear on my car's engine from the constant restarts and shudder in the cabin and discomfort of having to sit through ozzy summer 36+ degree days without my A/C so my car can save a measly teaspoon of fuel is just not a trade-off I'm willing to make.

Add to that my car is a manual so 50% of the time it messes up my launches cause my brain psychologically doesn't want to rev the car within a split second of starting the engine.

I hate it so much it was starting to ruin the car for me.

Spoke to Mazda they can't/won't switch it off because it's a safety feature, lol.

Now I know there's a button to turn it off manually but that only works for that trip - it defaults to on again the next trip, I wanted a more permanent solution so here's how.

Get yourself a piece of paper, fold it up and wedge the bloody button in! Walah! No more i-stop.

I know it's a bit unsightly but it works now everytime I start the car it bleeps instantly to tell me the i-stop is off. :)

Very very happy. And sorry for the rant.

Matt.
Image
 
#11 ·
There is a solution to disabling istop, knowing that the istop button translates as 85ohms, you can design a small circuit that introduces this 85ohms into the system during just the first 5 seconds after starting the car. I've done it, just a N-FET transistor with a small 12v relay and some resistors and one capacitor. Oh, and the 85 ohms R ;)
 
#12 ·
jumper

you can also try inserting a jumper cable between the cable terminals behind the switch. the idea is to keep the two cables connected as though the push button is being pressed all the time.

i don't know how this affects the car's system, but it's the same as wedging a piece of cardboard on the push button but without the unsightly cardboard.
 
#16 ·
Thank you Matt

I have just bought a Mazda 3 sp25 and the istop nearly created an accident for me. I was turning right and almost came to a stop when the lights changed and the car coming toward me stopped for the lights. I quickly tried to accelerate and the computer became confused as to whether I wanted to stop or go and made a funny noise and didn't do anything for a few seconds then accelerated. I have asked the tech if there is a fuse to remove the issue but nothing.

Thanks you so much for this simple fix.

I haven't stopped laughing at your post.

Cheers
 
#19 ·
Ok let me start of by saying why. The i-stop system is supposed to save fuel, blah blah blah, well my car hit 10,000km's today and according to the app on the car i-stop has saved me 24km's! Wow.

This vs the the wear and tear on my car's engine from the constant restarts and shudder in the cabin and discomfort of having to sit through ozzy summer 36+ degree days without my A/C so my car can save a measly teaspoon of fuel is just not a trade of i'm willing to make.

Add to that my cars a manual so 50% of the time its mess's up my launchs cause my brain pyhcologially doesn't want to rev the car within a split second of starting the engine.

I hate it so much it was starting to ruin the car for me.

Spoke to Mazda they can't/won't switch it off because its a safety feature, lol.

Now i know theres a button to turn it off manually but that only works for that trip - it defaults to on again the next trip, i wanted a more permanent solution so here's how.

Get urself a piece of paper, fold it up and wedge the bloody button in! Walah! No more i-stop.

I know its abit unsightly but it works now everytime i start the car it bleeps instantly to tell me the i-stop is off. :)

Very very happy. And sorry for the rant.

Matt.
I feel your pain !
I have another very simple solution, turn on the cars windscreen demister and it overrides the iStop as a safety reason-in case the demister needs to be on too see in icy conditions! Waalaa, done!
Both front side vents still work so air flow is still pretty good. Not sure about a 35 deg plus day, but for the other 350 days of the year it's a perfect solution :)
 
#29 ·
I feel your pain !
I have another very simple solution, turn on the cars windscreen demister and it overrides the iStop as a safety reason-in case the demister needs to be on too see in icy conditions! Waalaa, done!
Both front side vents still work so air flow is still pretty good. Not sure about a 35 deg plus day, but for the other 350 days of the year it's a perfect solution :)
A toothpick instead of folded paper works well. Insert an end in each diagonal corner and trim off with side cutters for neatness
I feel your pain !
I have another very simple solution, turn on the cars windscreen demister and it overrides the iStop as a safety reason-in case the demister needs to be on too see in icy conditions! Waalaa, done!
Both front side vents still work so air flow is still pretty good. Not sure about a 35 deg plus day, but for the other 350 days of the year it's a perfect solution :)
 
#21 ·
ISTOP

If you have a look at the negative battery connection you will notice a small extra connection on it thats the istop, disconnect that & never worry about istop again if you ever want it back just reconnect it & follow the Mazda istop reset procedure. either that or just go to Mazda & they will disconnect it for you.
 
#22 ·
If you have a look at the negative battery connection you will notice a small extra connection on it thats the istop, disconnect that & never worry about istop again if you ever want it back just reconnect it & follow the Mazda istop reset procedure. either that or just go to Mazda & they will disconnect it for you.
Can you please share a pic of the exact extra connection for everyone to be properly guided, sir? Thanks!

Sent from my SM-G970F using Tapatalk
 
#25 ·
To stop i-stop you have to do the following;
Open the hood of the engine, the lock has a plastic cover, two points, two holes where you insert a screwdriver. You will see a switch with an electric cable. The function of the switch is to open when the hood is raised and i-stop off, service mode. This switch must be locked to deactivate the i-stop function. You can do this either by dismounting the position or by inserting a plastic piece between the switch body and the metallic blade of its drive. I have been using the method of locking the metal blade for a long time, the i-stop result stopped without motor running errors.
 
#26 ·
I am 100% convinced there is a way to turn it off.
I bought a show room MX-5 (in Japan) with i-stop. For the first month it never came on. I thought the system was broken. I really didn't care because I didn't want to use it. Then after about 1 month I had a lot of electrical work done on my car. Reverse camera put in, dash cam hardwired in, and a highway card reader put in. I am pretty sure they reset the car to factory settings when doing all this. And from the second I drove it out of the shop that day, i-stop started working normally. I am convinced Mazda is able to turn it off and does some on some or all of the show room cars becuase they don't this crap system coming on when people are test driving their cars.
 
#31 ·
I have a 2013 Mazda 6 and decided to show how simple the bonnet switch deactivation is. I made this for a friend whose daughter has a CX-3 and also wanted to turn it off. Due to COVID-19 Isolation I wasn't able to go there and help him but decided to take a few photos yesterday morning and send them to him with some comments. Australian 2013 Mazda 6 2.2L Turbo Diesel.
 

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#32 ·
Ok let me start of by saying why. The i-stop system is supposed to save fuel, blah blah blah, well my car hit 10,000km's today and according to the app on the car i-stop has saved me 24km's! Wow.

This vs the the wear and tear on my car's engine from the constant restarts and shudder in the cabin and discomfort of having to sit through ozzy summer 36+ degree days without my A/C so my car can save a measly teaspoon of fuel is just not a trade of i'm willing to make.

Add to that my cars a manual so 50% of the time its mess's up my launchs cause my brain pyhcologially doesn't want to rev the car within a split second of starting the engine.

I hate it so much it was starting to ruin the car for me.

Spoke to Mazda they can't/won't switch it off because its a safety feature, lol.

Now i know theres a button to turn it off manually but that only works for that trip - it defaults to on again the next trip, i wanted a more permanent solution so here's how.

Get urself a piece of paper, fold it up and wedge the bloody button in! Walah! No more i-stop.

I know its abit unsightly but it works now everytime i start the car it bleeps instantly to tell me the i-stop is off. :)

Very very happy. And sorry for the rant.

Matt.
Hi Matt2905
First I was vigorously nodding my head on your i-stip summary. All of that!!So I put my brain into gear and this was my solution. I drilled a 1.5 hole on either side of the button, cut a paperclip a little longer than required, put a curve into it, put each end into the holes, then flattened it out. Preston job done. Cheers, Bobhay
277525
 
#33 ·
[QUOTE = "Redtag, publicaciĂłn: 2440275, miembro: 538067"]
Hola amigos,
Yo también odio el I-stop y conduzco en veranos australianos. Escuché que el I-stop no funcionará si el automóvil cree que el capó está abierto. Entonces, ¿por qué no engañar al sensor del capó en lugar de trabajar en el interruptor del tablero?
Etiqueta roja
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Y LO HICE .PERO DESAHBILITA LA ALARMA .NO EL CIERRE CENTRALIZADO.PERO SI LA ALARMA MAZDA 6 2019 MT