NHTSA Complaint #11534048 — 2018 TESLA MODEL X

Driving into a car wash, I placed the car in NEUTRAL. The instrument cluster confirmed as much with an 'N' symbol, while I was stopped, in the single-track for the car wash to push/pull the car through the apparatus. The car was pulled into the car wash about half-way (roughly 25-35 seconds of N). Then, the car spontaneously shifted to PARK, and indicated as much with a 'P' in the instrument cluster. No cars were behind me in the car wash, this time. And I was able to re-engage NEUTRAL for the remainder of the wash (about another 35-40 seconds). It is unknown if the car would revert to parking by itself, if I had not activated DRIVE to exit the wash. If it makes a difference, I was in the driver's seat the entire time -- as is the usual custom at this self-serve tracked car wash. This has happened 3 or 4 times before -- usually in connection with the car wash. It is very unclear if this is poor software or a sensor that is to blame. In my other Tesla, it tends to go to PARK without conscious user input when a body lifts out of the driver's seat. So this could be a simple sensor that is a bit touchy in this Model X that is the subject of this report.