Understand this carefully:
- A/C on
- Problem braking after short intervals.
The detail is that in auto tranny, when the a/c is on, the brakes turn really hard when you are in a stop and go position such as at a traffic signal, toll plaza, etc. There is a cure here on PakWheels. Look for 'Vitz braking issue on CNG' or the like and you will come across it. Member Rawfay posted a diagram and explained great detail on how to overcome this issue. My driver succeeded in doing it once too.