Tonight I started my 2019 Discovery the park brake & gearbox fault were on & the car would not go forward or reverse. Had someone do a diagnostic on it then cleared the faults. Turned it off then started it back up & it drove as if nothing had happened. Anyone else experience this?

 

I have that same problem on my 2016 disco sport. What I found the quick fix is to turn off the car and open the brake reservoir cap to let out pressure. I don't understand it, but it works. If there was air in the brake system then usually the brake pedal would be soft but actually, I noticed that when starting the car in the morning the brake pedal feels really hard then I know it will happen again soon, so I'll open the reservoir cap preemptively. Let me know if this works for you because it's driving me crazy. I have replaced all pads and made sure my brake fluid level is good. And even replaced the cap.