Hyundai Santro turning off issue

[sameedqds]

So recently I am having this issue with my Hyundai Santro 2006 Club GV that it starts normally and I drive it for a while, and in the middle of the road it suddenly just turns off, and then it wont start again. Then I steer it to the side and keep trying repeatedly with small breaks in between till about 3-5 minutes then it will start again normally.
I have showed the car to numerous mechanics but they can't figure out the issue as whenever they start it it does start. It just happens suddenly and then starts again too.
Also, often in the middle of the road the car jerks sometimes and the check light also turns on, but the car doesn't turn off this time.
What could be the issue?
As the mechanic can only figure out the issue if if happens in front of them, which it doesnt.

[Xulfiqar]

By your description you have a classic crankshaft position sensor issue, (crank sensor)

Its failing when hot.

A.very basic check can be done for bias voltage at the sensor plug when it fails is that it should have 12v positive and negative and a 5v bias reference which the sensor pulls to ground to “pulse”

Its buried a bit deep in your engine and requires the lower timing belt cover to be removed, however the plug is external and can be tested as is.

I would suggest to find actual mechanics who know what to check, this is very elementary basic efi stuff, i think the variety you are visiting is more of cd70 repair person.

[sameedqds]

I have also visited so called expert Santro Mechanic and he said sensor etc are fine. Still problem is unsolved.
The problem is related to current I think. As the indicator also sometimes works and sometimes doesn't.
Plus, this issue cab happens even 1 minute after the car has been moving, so its not that the car gets hot after that this issue occur.
It's just spontaneous event.
Sometimes it jerks and then checklight lights up and car doesnt turn off, while driving.
And sometimes the car just turns off while driving, and then you steer it to the side and keep trying to switch On and the check later light won't appear, means nothing happens even if you keep trying to give self to the engine.
Then after few minutes you switch the car ON, and check light appears. Now the car will start off normally.
This event can happen after 1 minute of driving, or 30 minutes of driving, its not related to car being hot or cold. Its just a spontaneous event.
No one has been able to figure it out.

[Xulfiqar]

Did this car have a tracking system in it in the past?