hi all,My W202 got an problem, when i am driving the ABS light come out and the speedometer stop work! after i stop the car and start the car again ,the ABS light turn off and the speedometer work again ,But the problem is the brake effect doesnot work good.....the ABS easy to take in the normal break action!

Anyone know the problem? I checked the car with the computer ,it shows ABS sensor fault (left front) ! So is it affect the funtion of the speedometer! thanks ALL