Hi all.. new to MB Forums.

I have a 2017 GLC, 88K miles and recently the vehicle won't go into park, foot on brake, full stop and nothing happens. When I shut if off, press the park button it goes Into park, or if I open the drivers side door it goes into park. This happens about 90% of the time, so periodically it the button will work. help.

 

When you press the brake pedal, do the brake lights come on? Since it goes into park via methods not involving the brake pedal, maybe you have a bad brake pedal sensor.