Trailer Sway Control (TSC); Ready Alert Braking (RAB); Rain Brake Support (RBS)- Page 95

2018 Jeep Wrangler JL User Guide

Table of Contents

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Trailer Sway Control (TSC)

TSC uses sensors in the vehicle to recognize
an excessively swaying trailer and will take
the appropriate actions to attempt to stop the
sway. TSC will become active automatically
once an excessively swaying trailer is recog-
nized.

NOTE:

TSC cannot stop all trailers from swaying.
Always use caution when towing a trailer and
follow the trailer tongue weight recommenda-
tions. Refer to “Trailer Towing” in “Starting
And Operating” for further information.

When

TSC

is

functioning,

the

“ESC

Activation/Malfunction Indicator Light” will
flash, the engine power may be reduced and
you may feel the brakes being applied to
individual wheels to attempt to stop the
trailer from swaying. TSC is disabled when
the ESC system is in the “Partial Off” or “Full
Off” modes.

WARNING!

If TSC activates while driving, slow the
vehicle down, stop at the nearest safe
location, and adjust the trailer load to
eliminate trailer sway.

Ready Alert Braking (RAB)

Ready Alert Braking may reduce the time
required to reach full braking during emer-
gency braking situations. It anticipates when
an emergency braking situation may occur by
monitoring how fast the throttle is released by
the driver. The EBC will prepare the brake
system for a panic stop.

Rain Brake Support (RBS)

Rain Brake Support may improve braking
performance in wet conditions. It will periodi-
cally apply a small amount of brake pressure
to remove any water buildup on the front
brake rotors. It functions when the wind-
shield wipers are in LO or HI speed. When
Rain Brake Support is active, there is no
notification to the driver and no driver inter-
action is required.

Hill Descent Control (HDC) — If Equipped

HDC is intended for low speed off road driving
while in 4WD Low Range. HDC maintains
vehicle speed while descending hills during
various driving situations. HDC controls ve-
hicle speed by actively controlling the brakes.

HDC has three states:

1. Off (feature is not enabled and will not

activate).

2. Enabled (feature is enabled and ready but

activation conditions are not met, or driver
is actively overriding with brake or throttle
application).

3. Active (feature is enabled and actively

controlling vehicle speed).

Enabling HDC

HDC is enabled by pushing the HDC switch,
but the following conditions must also be met
to enable HDC:

• Driveline is in 4WD Low Range

• Vehicle speed is below 5 mph (8 km/h).

• Parking brake is released.

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Detailed Information for 2018 Jeep Wrangler JL User Guide

Lists of information found in 2018 Jeep Wrangler JL User Guide - Page 95

  • 1. Off (feature is not enabled and will not activate).
  • 2. Enabled (feature is enabled and ready but activation conditions are not met, or driver is actively overriding with brake or throttle application).
  • 3. Active (feature is enabled and actively controlling vehicle speed).
  • Driveline is in 4WD Low Range • Vehicle speed is below 5 mph (8 km/h).
  • Parking brake is released.

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