How do I fix the transmission on my Ford S-Max?

I've been experiencing some issues with the transmission on my Ford S-Max. It seems to be slipping and not shifting properly. What could be causing this problem and how can I fix it?

First, check the transmission fluid level. If it's low, top it off and see if that improves the shifting. If not, it could be a more serious issue such as a faulty solenoid or worn out gear. It's best to take it to a mechanic for a proper diagnosis.

I had a similar issue with my Ford S-Max and it turned out to be a transmission control module failure. I recommend taking it to a specialized Ford mechanic for an accurate diagnosis and repair.

It could also be a problem with the transmission filter. Start by changing the filter and see if that helps. If not, then it's probably best to take it to a mechanic for further troubleshooting.