It was brake pedal switch.

 

Or wrong bulb(s) or ...

 

Even if vehicle is off and key removed from ignition?

 

Speedometer says "boot open"
Stop lights always on, central lock doesn't work, possibly because computer "thinks" that trunk is open.
I went to a parts store and stop lights (all 3 of them) were on for about 20 min

 

Firstly Check your spear wheel well for water!
Like jagv8 said if you've been messing with tail bulbs you need to check thay are correct for the car , s types have unusual bulbs! And have the wattage inscribed beside each bulb socket in the bulb frame !

If you have an icarsoft scanner or similar check the recm for codes , Check all fuses in the boot/trunk fuse box with test light or multi meter , Also check the battery voltage ,charge or replace battery if needed , make sure you have your sterio code if required and do a hard reboot or just disconnect the battery negitive for 20mins and reconnect !
Reset sterio and park brake ! And see if that helps !
Failing that there is a wireing loom on the right hand boot/trunk hinge that can break wires in it from flexing . But before pulling the loom to bits check the earth points on the (rear elictronics control modual, recm behind the carpet trim on the right hand inner gaurd/wall

It's unlikely that your boot/trunk switch and brake pedal switch both failed at the same time , both the brake lights and boot switch/lights are controled by the recm and will most likely be the were the problem lies!
Good luck let us know if that's enuff info or if you need more guidance
If it turns out the recm is fryed I may have one for you if the part no#s match.

 

Was it like this before you did any work on the car?

 

Lights turn off after I pull pedal up, so it is bad or not adjusted brake switch!

 

Nice that's a easy one . What about the boot switch did you have the plastic scuff pannal removed from over the lower catch pin ?

 

yes.
Done, thanks!!!!!!!!!!
It is funny, I had exactly same problem with Mercedes door switch. Little plastic cover was removed.