3
questions

Use key manually for ignition and to lock all the other doors, but I can't lock driver side door with it.

brake(dash) light is on ,reservoir appears to be low.I don't have owners manual,what specific brake fluid should I put in my 2006 golf diesel

when i shift in reverse it trys to backup then kicks it out of gear and grinds really bad. If the car is on jackstands and u put it in reverse it turns the tires fine but still sounds like it is grinding or really rough sounding. do i need a new transmission or is it worth having this fixed.However the car drives grat its a manual tranny