Jeep Wrangler: STARTING AND OPERATING / STOP/START SYSTEM — AUTOMATIC TRANSMISSION (IF EQUIPPED)

The Engine Stop/Start (ESS) function is developed to reduce fuel consumption. The system will stop the engine automatically during a vehicle stop if the required conditions are met. Releasing the brake pedal or pressing the accelerator pedal will automatically re-start the engine.

ESS vehicles have been upgraded with a heavy duty starter, enhanced battery, and other upgraded engine parts, to handle the additional engine starts. Vehicles equipped with eTorque contain a heavy duty motor generator and an additional hybrid electric battery to store energy from vehicle deceleration for use on engine startup after a stop as well as providing launch torque assist.

NOTE:

It is recommended that Stop/Start system be disabled during off-road use.

Secondary Battery

Your vehicle may be equipped with a secondary battery used to power the Stop/Start system and the 12 Volt vehicle electrical system. The secondary battery is located behind the wheel well for the front passenger wheel.

Battery Locations

1. Primary Battery
2. Secondary Battery

• Autostop Mode
• Possible Reasons The Engine Does Not Autostop
• To Start The Engine While In Autostop Mode
• To Manually Turn Off and Turn On The Stop/Start System
• System Malfunction