Locks open when making right turns, also car alarm goes off randomly. Please help

every once in a while it will but it will not go into gear

Where would I find the fuse for the horn?

how many oxygen senors does this car have? and how do you replace air filters? does the air filter housing have to be removed from the engine?

Does the air filter housing need to be removed from the engine to access the air filter element?

How do you remove the caliper on a 2000 Mercedes E55 AMG from rotor to replace the pads as well as replacing the rotors ?
Thank you very much for your assistance in this matter.