One of my Soldiers owns a 2001 c240, 6cyl gas with an automatic transmission, around 150,000 miles. I have a mechanics background but do not have any experience with Mercedes. I am thinking it is something electrical, with the vehicle is running and the selector moved to any position there is no change in engine RPM's (no engagement). The battery is good (starts but not tested) fluid is full and does not smell burnt. Unfortunately he still owes a considerable amount and does not have additional funds for a large repair or repair shop. So hopefully some of you can offer some suggestions as to getting this vehicle back on the road. Thank You

Any warning lights?? like "check engine"?

No movement at all suggests low fluid level OR complete mechanical failure of the trans.

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Does the gear indicator change when shifted out of parK? Did the shift linkage fall off?

The linkage is still connected, but I have some more information around 1 month ago he had the fluid changed at the dealer, a short time later the vehicle would not shift out of 1st. The engine light came on and autozone or advance told him it was a speed sensor problem. The dealer stated it did not have this sensor and sold him an electronics package and 3 quarts of fluid. My Soldier removed the pan, removed whatever sensor he was sold (he destroyed the old one taking it out) and added 3 quarts of fluid. (is it true there is no dip stick?) now the car does nothing. Do I need to go in and pull the pan to check the sensor? could this sensor cause this problem (improperly installed, broken wire, not seated ETC). Thank You for the previous reply's.

Does anyone have any sugestions about this transmission?

If the problem began after the work was done it would make sense to re-check the previous repair. You say he "destroyed" the old one taking it out? That could be cause for concern.

Previous repair was initially a fluid change, it completly went out after he changed the sensor, however he was having problems (would not shift out of 1st) before he changed the electronics. The sensor was broken as it came out (his words it was destroyed after further questioning it came out broken), it was also thrown away. my previous experiance with some vehicles is if the fluid and filter was never changed until 150k the transmission would work for a month and then quit (new fluid would break the gunk down and the transmission would just quit working all together) is this also a problem with high milage mercedes or could the electronics he replaced have been effected by sludge, ruff handeling Ect. after/ during the fluid change. I have not been able to look at the vehicle yet, is it true this vehicle does not have a dipstick? Thank You in advance