Hi guys,
just purchased a 2001 ML270 CDi Auto with sensible miles (90k) & plenty of history.
Car seemed fine on purchase although a bit sluggish (sorted by lubricating throttle cable & adjusting it a little in the engine bay), so all was good!
However, the following fault has developed, with symptons as follows:
Approx. 50 miles after purchase it all of a sudden (on a start-up) wouldn't change 'up' gear (30mph was approx. 3000rpm). On pulling over at the side of the road (with the brake pedal pressed), it would not engage either R or P, without 1st applying the park brake pedal & taking foot of the brake - it would then shift into R or P no problem.
Since then, every time we enter the car & turn on the ignition, the Auto transmission display on the dash (next to the clock, displaying P/D/R etc), does one of 2 things:
It either:
1) shows P (as it should), we then start the car, engage Drive (or Reverse, or a combination of both!) & everything on that complete journey is fine & proper, until we turn the engine off....
or,
2) shows no letter P in the 'yellow box' display at all - then when Drive is selected the car wont change up the 'box, & it wont let you engage Reverse (without taking your foot off the brake pedal, applying the handbrake etc etc - as described above). When driving under this situation, either forwards or backwards, the display box stays completely 'yellow', without D/R/P etc
I have spent hours & hours trawling the web & found loads of info, but wondered if anyone knows if these particular set of symptoms & responses may point anywhere in particular?
For reference, I have replaced the battery with new, & also had it plugged into a Snap-On Modis machine which didn't register any faults.
Please can anyone help?, love the thing other than this problem!
just purchased a 2001 ML270 CDi Auto with sensible miles (90k) & plenty of history.
Car seemed fine on purchase although a bit sluggish (sorted by lubricating throttle cable & adjusting it a little in the engine bay), so all was good!
However, the following fault has developed, with symptons as follows:
Approx. 50 miles after purchase it all of a sudden (on a start-up) wouldn't change 'up' gear (30mph was approx. 3000rpm). On pulling over at the side of the road (with the brake pedal pressed), it would not engage either R or P, without 1st applying the park brake pedal & taking foot of the brake - it would then shift into R or P no problem.
Since then, every time we enter the car & turn on the ignition, the Auto transmission display on the dash (next to the clock, displaying P/D/R etc), does one of 2 things:
It either:
1) shows P (as it should), we then start the car, engage Drive (or Reverse, or a combination of both!) & everything on that complete journey is fine & proper, until we turn the engine off....
or,
2) shows no letter P in the 'yellow box' display at all - then when Drive is selected the car wont change up the 'box, & it wont let you engage Reverse (without taking your foot off the brake pedal, applying the handbrake etc etc - as described above). When driving under this situation, either forwards or backwards, the display box stays completely 'yellow', without D/R/P etc
I have spent hours & hours trawling the web & found loads of info, but wondered if anyone knows if these particular set of symptoms & responses may point anywhere in particular?
For reference, I have replaced the battery with new, & also had it plugged into a Snap-On Modis machine which didn't register any faults.
Please can anyone help?, love the thing other than this problem!
