First I will request people not to give advice whether I should or should not disable the ECO IDLE on my car or whether its a good idea.
I have done a lot of research and ECO IDLE does not offer any real fuel savings, in normal driving in Japan and abroad there is only a small amount of saving but even that is not worth it. The car manufacturers know this but still install ECO IDLE in cars because the ECO IDLE is designed only for the standardized tests by ratings agencies and not really helpful for day to day driving. Even in ideal conditions if ECO IDLE works you will save only a maximum of $1-$2 per month which is nothing.
But when it comes to Pakistani roads ECO IDLE is completely worthless as my Mira engine stops three times on a single roundabout and if someone new is driving the car who is not used to automatic engine stop/start they will be confused and take their foot off the brake and hit other cars. I have to give a long lecture regarding this every time i give the car keys to a friend or relative!
Now to the million dollar question!
How to permanently disable the ECO IDLE function?
I know there is a button next to steering wheel to switch it off every time we start the car but I am a very forgetful person and I need to permanently disable ECO IDLE.
I read that the ECO IDLE function relies on a totally separate lithium ion battery under the car seat and if that is the case is it safe to just disconnect the wires from that battery to disable it?
The ideal solution would be a way to disable through software setting without messing with the hardware