check power to the window motor
by removing the door panel, apply power to two teminals and then reverse terminals window should go up and down when direct power is applied if so your motor is good, if not either a bad relay or a bad switch
ANSWER FROM ME
THAT IS DEFINITELY NOT the first step. ML320 window switch problems are usually not the motor - they are the switch -- at the console -- lots of info available at MB forums. There is copper in the switch and it bends/wears with time -- usually the drivers side. There are 2 options:
Take out the switch module and repair it [per MB forum member instructions]
Replace the module [it is in a bank of 4 - so you're replacing all the 'switches'].
You probably had stuttering of the window before it failed?
Here in MA -- mine failed this winter - -So I plugged in the hair dryer outside and just heated it up to get it "UP" -- and tried to remember not to use it.. But just like high school physics -- heat expands and voila! The switch component is not tooo expensive....
Rear Quarter window.
Take it to the dealer.
The window goes down easier because gravity is helping. The window tracks could be dirty or the motor could be weak, causing the trouble going up.
If you are having trouble with your window going back up to the up position, I assume that it has no trouble going down. The problem may be the motor in the door being to weak to push the window back up. You can replace this for about 55.00 good luck
Cheese
window regulator is worn out
IF THIS IS A POWER WINDOW THE MOTOR IS GOING BAD.IT HAS THE POWER TO PULL THE WINDOW DOWN BUT PUSHING IT UP IS MUCH HARDER FOR THE MOTOR.GEARS COULD ALSO BE THE ISSUE IN THE MOTOR IF IT MAKES A GRINDING NOISE IT IS THE GEARS,IF JUST NOT PUSHING UP THE WINDOW THE MOTOR IS JUST GOING BAD.
One window, probably the switch or the electric window motor. All windows, probably the fuse or circuit breaker.
vertical split bar
it means your emergancy brake is up
The single bulb that lights up all three climate dials on my 2000 MB ML320 is out. Can it be removed or is it LED is there a special tool?
Serpentine Belt Diagram ML320