Yes! I have fixed everything but the vibration, although I put the car on the lift and saw that the mounts are torn, so that is good thing (it's not gearbox or clutch), but now I need to order them.There's a lot of good advice (concerning you smart car) for you in this thread. Did any of it work out?
The heater works perfect, I was clogged, as the car was not driven for quite a while.
Changed gearbox oil to Valvoline GL4, felt no difference whatsoever 😂
Fixed horn myself - very easy to take the steering wheel off, dissasamble, find disconnected connector, connect and reassemble.
Passed inspection and all is good for an year!!
Found ambient temperature sensor and it's the same as on any Mercedes, so that's easy to find/fix. I'll do that tomorrow.
Tomorrow I am taking the car to fix a/c (hope just adding freon will do).
I will also wash the car and post some photos. Think it's a very nice looking car
Thank you guys for comments and advises!