There is a small filter and sensor in the gearbox which senses when to shift up or down gear - if this becomes clogged or defective this will happen and he gearbox will not go past 2nd gear
You will need to take it to a dealer or good mechanic to have it rectified - ie cleaned out and the gear oil and part replaced
Hope this helps
have.check.transmissions.fluid
Check transmission
still have p0715 still after cganhe the parts / you think is this transmission module \
Could be the fuse or relay....if you drive through a lot of puddles it could be water in the horn.....has happened to me.....
como resetear
two key............
Under the passenger side dash
check the dealer
on the right side of the engin in the frount
yes. i purchased my 1999 ml430 with 120k miles for $8500. The German engines run for ever.
Top rear of flywheel housing behind the drivers side head. google this( mercedes-autobestanswer) .
You need a workshop dipstick and some way to know the fluid temp is above 80 C. Since some of us can't find our manual, perhaps you could tell us where the transmission level can be measured?