@Cosmo Cruz I have a question as I may not understand the problem correctly. Did your brakes fail, as in brake pedal did not work but car stopped because you had regen on?
no can't recall if I touched brakes before it happened, I usually do not need to use the brakes.
Did the brake hold icon light up on the dash (the D icon will turn to H with parentheses around it)?
probably, everything was lit up. I was too freaked to notice.
Or was the problem you had the car automatically braking? That will cause the screen to flash red and the vehicle to lunge to a stop very aggressively, which is the opposite of a brake failure but instead overly aggressive brakes?
yes, this is what happened. you describe it well. has it happened to you ? It was sudden and I wasn't doing anything but regen coasting to a stop at the red light. It happened just a few meters before I got to the stop place.
I’m onl my asking because sometimes the updates turn back on settings previously turned off. My auto-front/read collision braking is turned off because I can’t back out of my driveway without the car slamming on the brakes even though I have room. Maybe either yours got turned on, or the sensor is malfunctioning and sensing there are objects that are not there (aka Tesla phantom braking?).
And most importantly glad you have a sense of humor about this and aren’t throwing a tantrum, don’t ever lose that!
Dude thanks. Let me set the scene. Sunday going to Meeting. I go out to the car and see the update star next to the gear thing.
It's only 2 min. so I do it. Come back out everything's cool. Then I see the star is back?? So I do it again and everything's cool, car is current at xx.35. I"m wondering if we should take the wife's mazda to drive into the city on the dangerous Schuylkill expressway since I have not driven the car much since the video module was replaced and all the updates I'd missed were installed, but we did it the previous Sunday and it was fine. Just one of those "little voice" kind of things that you can't tell is a warning or monkey brain chatter. I decided I was being silly, and I couldn't wait to take the car out on the highway again. You know ... the car is an awesome ride.
So we're 4 miles from home on the local roads in light rain and very light Sunday AM traffic. I'm on a gentle downhill to a stop light and letting regen slow me. No other cars around. I don't know if I touched the brake pedal...even though I have low time I love the one foot driving and rarely use the brake if not needed. Suddenly the car seems to lurch violently and jerk to a hard stop and the dash goes red. I probably instinctively went to the brake at some point...not sure if I was on the brake when it happened. Did not lose brakes, quite the opposite.
Car would not move. Put hazards on. Tesla rolls up behind us. I'm mortified. We're sitting in the car I'm trying to make sense of it all while wife is out in the freezing rain directing traffic around us -- we are not in any danger, but I can tell my body is in full fight/flight mode.
I call roadside assistance but that was useless (can't hear, can't understand accent, bad connection, car speaker way distorted like it's being overdriven for those who know audio). I get out and ask the wife to call. Guy asks for VIN but says car does not exist. He reads back the VIN wrong so I try again, he reads it back wrong again, third time good but he insists car does not exist (same issue with Liberty Mutual Insurance). After several minutes I realize I can't understand or explain anything with his accent and our bad connection so I hang up. Someone yells "nice car" as the drive into the oncoming traffic lane to get around me. My first compliment. We are both standing in the rain. It's pretty obvious the car is not nice at all. I say this to set the tone for my mood. Fear and rage. Humiliation and embarrassment. We're getting cold as we had not planned to be outside. I'm shaking from the adrenaline.
Decide to try the turn signal reset. It works. Now what? Well, we aren't going to Meeting...so relieved as we were so close to getting on the highway. Should I drive a few meters to the first safe spot for a tow truck? But we are only about 2 miles from the EA charger at the Mall with it's huge empty parking lots and we can be warm and dry in the mall while we wait for the tow. I convince the wife that I have read about this and assure her it's probably a software glitch that was fixed by the reset. Car behaves normally ~ 2 miles but just as we approach the mall parking and I slow for the turn-in it happens again without the sudden stop but bright red screen ... perhaps a different one? This time car is still coasting so I used momentum to finish the turn into the parking lot and coast into a safe landing where a tow truck can easily get me.
The chargers are just 100 meters away downhill, so I do the turn signal reset and it works. I tell the wife I'm going to fill up while I'm here so why don't you go in the mall and try calling the guy again. I start the car and drive towards the chargers, about 20 meters it happens again. Third time. I do reset. I drive to chargers and tell wife go to mall I'm going to charge while i am here and she's going to call the guy again from the warmth and dryness of the mall.
the open charger is out of service but one next to it is ok, but there is no way to park my car front or back where the EA cable will reach the port??? I give up and move the car to a place for the tow truck and go in the mall to pee. When I come out Tycan guy has moved to the spot I could not reach but is still on the phone. Ah ha! EA charger syndrome. (he has to use his credit card). I move to his spot and charge starts immediately. As I walk back to the mall I say: "new technology...has issues". He replys in German accent, kind disgusted sounding, "It's not new, and this is supposed to be free." It's not just our cars. I'm starting to feel better. I go into the mall. We give up on roadside assistance and I say let's take the car home. I'm still optimistic because the resets have worked every time. I start to back out and this time definitely touched the brake. Bricked again. I don't know what was wrong with me but I did a reset again, it worked, and I convinced the wife we could drive the 6 mi back home, as where else would they tow the car? The drive home was uneventful.
Since then I've done the key card reset and driven around the block trying to reproduce the fault.
I can't remember well because adrenaline. I saw "drive system failure" and "brake system failure" at various times during the 4 times it happened, also saw the turtle. Don't remember which happened which time now. I'm pretty sure my screen was much more red and orange and lit up than in the photo posted above. Did not even think to snap a photo. Are all these faults logged into the system for diagnosis?