To Activate The Autostop Mode,; The Following Must Occur:; Other Factors Which Can Inhibit Autostop- Page 169

2018 Jeep Wrangler JL User Guide

Table of Contents

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To Activate The Autostop Mode,
The Following Must Occur:

• The system must be in STOP/START

READY state. A STOP/START READY mes-
sage will be displayed in the instrument
cluster display within the Stop/Start sec-
tion. Refer to “Instrument Cluster” in “Get-
ting To Know Your Instrument Panel” in
your Owner’s Manual for further informa-
tion.

• The vehicle must be completely stopped.

• The shifter must be in a forward gear and

the brake pedal depressed.

The engine will shut down, the tachometer
will move to the zero position and the Stop/
Start telltale will illuminate indicating you
are in Autostop. Customer settings will be
maintained upon return to an engine running
condition.

Refer to the “Stop/Start System” in the
“Starting And Operating” section located in
your Owner’s Manual for further information.

Possible Reasons The Engine Does Not
Autostop

Prior to engine shut down, the system will
check many safety and comfort conditions to
see if they are fulfilled. Detailed information
about the operation of the Stop/Start system
may be viewed in the instrument cluster dis-
play Stop/Start Screen. In the following situ-
ations, the engine will not stop:

• Driver’s seat belt is not buckled.

• Driver’s door is not closed.

• Battery temperature is too warm or cold.

• Battery charge is low.

• The vehicle is on a steep grade.

• Cabin heating or cooling is in process and

an acceptable cabin temperature has not
been achieved.

• HVAC is set to full defrost mode at a high

blower speed.

• HVAC set to MAX A/C.

• Engine has not reached normal operating

temperature.

• Engine temperature too high.

• The transmission is not in a forward gear.

• Hood is open.

• Transfer case is in 4LO or Neutral.

• Brake pedal is not pressed with sufficient

pressure.

Other Factors Which Can Inhibit Autostop
Include:

• Accelerator pedal input.

• Vehicle speed threshold not achieved from

previous auto-stop.

• Steering angle beyond threshold. (ESS

Models Only)

• ACC is on and speed is set.

• Vehicle is at high altitude.

• System fault present.

It may be possible for the vehicle to be driven
several times without the STOP/START sys-
tem going into a STOP/START READY state
under more extreme conditions of the items
listed above.

167

Detailed Information for 2018 Jeep Wrangler JL User Guide

Lists of information found in 2018 Jeep Wrangler JL User Guide - Page 169

  • The system must be in STOP/START READY state.
  • The vehicle must be completely stopped.
  • The shifter must be in a forward gear and the brake pedal depressed.
  • Driver’s seat belt is not buckled.
  • Driver’s door is not closed.
  • Battery temperature is too warm or cold.
  • Battery charge is low.
  • The vehicle is on a steep grade.
  • Cabin heating or cooling is in process and an acceptable cabin temperature has not been achieved.
  • HVAC is set to full defrost mode at a high blower speed.
  • HVAC set to MAX A/C.
  • Engine has not reached normal operating temperature.
  • Engine temperature too high.
  • The transmission is not in a forward gear.
  • Hood is open.
  • Transfer case is in 4LO or Neutral.
  • Brake pedal is not pressed with sufficient pressure.
  • Accelerator pedal input.
  • Vehicle speed threshold not achieved from previous auto-stop.
  • Steering angle beyond threshold.
  • ACC is on and speed is set.
  • Vehicle is at high altitude.
  • System fault present.

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