mercedes w202 c280 v6

[arkin.w202]

hi all, i noticed a problem in my benz that when it is changing gears i fell i big hit from under the car it is like some one hits you from the back.
anyone noticed this problem amd by the way it is automatic

thanks and regards
jonathan

[wichipong]

when was the last time the transmission was serviced? you may have some transmission issues... get it serviced and see if it improves...

[arkin.w202]

hi i never serviced the transmission and the thing is that not all the time it makes the hit, and when i turn the engine off and turn it on again it comes good.
do you think its from the control unit?

[millos22]

Like Wichipong said i would get serviced before you start throwing parts at it.