Hello and welcome to just answer
The ESP will automatically turn itself on every time you start the car as it's a default setting for it to stay on. If no lights are coming up on the dash once the car is running this is normally a good sign that it is working.
Some models do have the option to turn it off and there is usually a switch that is marked ESP and when you press this the warning light will come on. This shows you that you have turned the system off. Once you turn the engine off and restart it the system will usually reset to the ESP being switched on so the light will go out.
I hope that this helps and if I can help further please feel free to ask
Hi, if the system is turned off you should get a warning light come up on the dash where the speedo and rev counter is. If the switch is dimly lit this is more than likely just so you are able to see the switch. If it's turned off the light would be quite bright so you really can notice that the light has come on.
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