Hi,
On our 1999 ML430 (135k miles) about two seeks ago, during the middle of a trip to the local store it refused to change gear into top (or overdrive - I'm not sure which). When we reached our destination I stopped the engine and restarted it. The car ran fine. Since then all has been great until this evening. The exact same thing happened. Refused to change into top gear so I stopped and re-started the engine. After that, all was well. I haven't changed the trans fluid yet.
Given that the problem went away when the engine was restarted I am wondering if it's the controller or the gearbox that's at fault. Any ideas anyone??
Also, could someone point me to a place where I can get good instruction on changing the fluid? I've searched the site but seem to come up mostly with discussions about whether the fluid should be changed or not.
Has anyone else had this exact same symptom??
Jim