[rondeo]

The only way to know if the transmission is overheating is to have a Ford Mondeo specific code reader such as Forscan plugged in at the time. This will show the actual transmission fluid temp.

It is possible in my experience with MC diesel that a DTC disappears when ignition is switched off.

In that case maybe Ford will help by offering a logger to read fault codes as they happen?

I suppose under warranty one may not wish to interfere ....


Other possible causes of overheating apart from those you have mentioned might be:


Faulty fluid pump, blocked fluid filter, faulty cooler/hoses, clutch/sensor position error, (resulting in slip).


I'm a DIYer so have no special knowledge about this car, just thinking.