Brakes - Tesla S Owner's Manual

Brakes

Braking Systems
Model S has an anti-lock braking system (ABS) that
prevents the wheels from locking when you apply
maximum brake pressure. This improves steering
control during heavy braking in most road
conditions.
During emergency braking conditions, the ABS
constantly monitors the speed of each wheel and
varies the brake pressure according to the grip
available.
The alteration of brake pressure can be felt as a
pulsing sensation through the brake pedal. This
demonstrates that ABS is operating and is not a
cause for concern. Keep firm and steady pressure
on the brake pedal while experiencing the pulsing.
The ABS indicator flashes briefly on the
instrument panel when you first start
Model S. If this indicator lights up at any
other time, an ABS fault has occurred
and ABS is not operating. Contact Tesla.
The braking system remains fully
operational and is not affected by an ABS
failure. However, braking distances may
increase.
If the instrument panel displays this
indicator at any time other than displaying
briefly when you first start Model S, a
brake system fault is detected or the
brake fluid level is low. Contact Tesla
immediately.
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Emergency Braking
In an emergency, fully press the brake pedal and
maintain firm pressure, even on low traction
surfaces. ABS varies the braking pressure to each
wheel according to the amount of traction available.
This prevents wheels from locking and ensures that
you stop as safely as possible.
Warning: Do not pump the brake pedal. Doing
so interrupts operation of the ABS and can
increase braking distance.
Warning: Always maintain a safe distance
from the vehicle in front of you and be aware of
hazardous driving conditions. While ABS can
improve stopping distance, it cannot overcome
the laws of physics. It also does not prevent
the danger of hydroplaning (where a layer of
water prevents direct contact between the tires
and the road).
Brake Wear
Model S brake pads are equipped with wear
indicators. A wear indicator is a thin metal strip
attached to the brake pad that squeals as it rubs
against the rotor when the pad wears down. This
squealing sound indicates that the brake pads have
reached the end of their service life and require
replacement. To stop the squealing, contact Tesla
Service.
Brakes must be periodically inspected visually by
removing the tire and wheel. For detailed
specifications and service limits for rotors and brake
pads, see Brakes on page 121.
Warning: Neglecting to replace worn brake
pads will result in damage to the braking
system and can create a braking hazard.
Model S Owner's Manual