The Pedestrian Warning System (if equipped) causes
Model S to emit sound when driving below
approximately 19 mph (32 km/h) or while driving in
reverse. Electric vehicles operate quietly and this sound
helps to alert pedestrians of your oncoming vehicle. The
sound, which activates whenever Model S is shifted out
of Park, gets louder as speed increases.
WARNING:
If sound cannot be heard, pedestrians
may not be aware of your oncoming vehicle, which
may increase the likelihood of a collision resulting
in serious injury or death. If the Pedestrian
Warning System is not operating, immediately
contact Tesla.
Pedestrian Warning System
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MODEL S Owner's Manual