NHTSA Complaint #11468873 — 2021 TESLA MODEL Y

Several instances of emergency braking applied without warning or obvious need during multiple driving sessions. This results in an unexpected rapid vehicle deceleration. Fortunately no other vehicle was following close enough to represent an imminent safety hazard though it is easily plausible this could happen. Typically the issue occurs when traveling uphill or around a bend and encountering traffic in an oncoming lane, structures (bridges) or dark shadows. The unexpected emergency braking has also happened when adaptive cruise control or autopilot is engaged while overtaking large vehicles on the left (tractor trailers in the right lane). I have also noticed several erroneous lane departure warnings despite turning off these notifications on the dashboard. They are more a nuisance than safety hazard so far but would like to completely silence them entirely. These issues have yet to be reproduced or inspected by the dealer, police, insurance or other investigator. No warning lamps or indicators were active at the time the braking or lane departure warnings were observed.