hello
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On the mirrors it is possible that they are electric so look on the adjustment switch area to see if their is a switch there. More than likely you simply can push them in and they click folded and to reset simply pull them out again.
For the seats that is a different problem. You can look in your manual to see the fuse arrangement and then pull out the appropriate fuse to check if it's toast. If that doesn't work then you need to go to a Mercedes dealer and they can use their computer to see what's wrong. Shouldn't be a major repair if both seat heaters are not working. Good luck
Have you tried both fobs? sounds to me like the button itself on the fob above the MBZ symbol for locking isn't working. You can take the key fob apart, and check the little buttons on the PCB / board itself for function. Sometimes they get stuck with dirt / grime to the point where the button itself under the plastic shell is not engaging.
If you have over 80,000mi then you are in need of servicing. This ZF transmission is computer controlled . One of the solonoids is going bad and be sure to replace the mechatronics adapter on the lower valve body. This small and inexpensive plastic adapter will cause a world of problems.
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follow plug leads back to coils, looking at engine start at left
