Your problems are listed as
vibration while in D (check engine mounts)
jerk while decel (check engine mount and driveshaft couplers too)
temp gauge reading cold (inspect thermostat - replace with new and fill with good MB coolant)
shocks (bilstein shocks last a very long time - check bushings rather than shocks)
vibration at 100 km/h (check front control arm bushings - if they are shot the car will vibrate on bad tires)
for the window and mirror - check the wiring plug near the kickpanel, both items being out of service means the main plug is disconnected.
rear window switch not working - ensure that the childlock feature is off (the button should be lit) - if its not lit, it wont work, if its lit and doesnt work, the switch is dirty.
random blower speed usually means the blower control is going out - what system is on the panel, full automatic or knob type?
test the system for SRS errors, you will need a high end scan tool to test it from the 38 pin port in the engine bay fuse box junction.
clicking noise from behind glove box? - are you sure its not coming from the engine room?