ABS and ESP can reduce the braking force but not disable the brakes completely, so the only thing I can think of is a total loss of pressure in the hydraulic system. But, of course, that's not something the car can recover from by itself. Last time a report of brakes "just not working"
popped up on the forum, I think the consensus was that the poster first put the car in neutral (instead of disabling autopilot) and then pressed the accelerator pedal instead of the brakes. That's one hell of a coincidence but not impossible. Curious what Tesla tells OP.
The brake pedal was locked in its non-pressed position. Like I think if you tried to brake a ICE car without the engine turned on, you'd have to slam your foot down. But in this case brakes didnt seem to work. Only by regen braking and driving real slowly came to a stop.
Here's the immediate previous history:
All working for 3 or so days. Car wash. Drive to CCS charger down road and drive back successfully.
This day - unlock car via mobile app and get in car and enter pin to drive. While in park, tell wife to connect her phone via BT (thought we could connect both phones simueltaneously using BT, didn't realise it disconnected mine). Brake locked in 'upper' position, when pressing it hard and trying to put car into drive, kept saying Press brake to change gear or whatever. After several times of trying reverse/drive, finally goes into drive. Thought it was a bug. Went forward slightly to then perform a reverse (I live at the end of a closed road, car facing towards end). Found I couldnt brake, 'Vehicle hold function not working' on screen. Only because of (very slow at that time) regen stopped. Crapped pants, came close to curb. Got wife/toddler out of car, locked it by walking away. Disconnected wifes phone, unlocked via app and got back in, all fine. Thought this is a serious serious bug and ill report.
Then got down the road and the 'Vehicle hold not working, use brakes when stopped' appeared again. Brake pedal locked in the upper position again. Hazards on, accelerate very slowly and try brake, cant press the pedal down. Turn into side road, come to stop, parking brake, roadside assistance.
When I posted at first, was on mobile and i was shaking slightly from how scary i found the situation given my baby in the back.
Here is the error above. I didnt mention the initial mobile issue as I can't see how it was a bug if the problem then occurred the second time around, just a freak coincidence imo.[/QUOTE]