Had my ac on when I checked the low side, got 100 psi, an audi tech told me the compressor is not working properly so both side are equalized. Need to get it checked but it does not mean compressor is bad yet.
Oops, not parking brake problem, but shifter stuck in park and needing to use over ride to get into other gears ( automatic) Might be related to ???

 

Both sides equalizes when the hub (not the pulley) of the compressor isn't properly working. Check the hub, if it's spinning and the pressure is equal, then bad comp.

Brake problem can be solved by checking fuses, and checking that the brake lights actually light up when you step on the brakes. If they don't trouble shoot the brake switch and it should work for you.