i went to mechanic shop and after his inspection he told :

1- dont keep your car steering rounded to right or left when you stop your car

2-dont stay on the signal trafic long time on D , use p or n

3- dont turn the steering of the car left or right to the end speedly

4- after turning the steering to the end on one direction dont keep it more than 10 seconde

5-on the curve try to reduce the speed to the last limit also when you turn to the end .

he change the oil , and replace it with new , and now ok ..

thanks all for the advices