Ram 1500/2500/3500 Owners & Service Manuals

Ram 1500/2500/3500: Automatic Mode

The Stop/Start feature is enabled after every normal customer engine start. It will remain in STOP/START NOT READY until you drive forward with a vehicle speed greater than 5 mph (8 km/h). At that time, the system will go into STOP/START READY and if all other conditions are met, can go into an STOP/START AUTO STOP ACTIVE "Autostop" mode.

To Activate The Autostop Mode, The Following Must Occur:

1. The system must be in STOP/START READY state. A STOP/START READY message will be displayed in the Electronic Vehicle Information Center (EVIC) within the Stop/Start section. Refer to "Electronic Vehicle Information Center (EVIC)" in "Understanding Your Instrument Panel" for further information.

2. The vehicle must be completely stopped.

3. The transmission Gear Selector must be in Drive 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 an Autostop. While in an Autostop, the Climate Controls system may automatically adjust airflow to maintain cabin comfort. Customer settings will be maintained upon return to an engine running condition.

Possible Reasons The Engine Does Not AUTO STOP

Prior to engine shut down, the system will check many safety and comfort conditions to see if they are fulfilled.

In following situations the engine will not stop:

  • Driver's seat belt is not buckled
  • Driver's door is not closed
  • Outside temperature is less than 1ºF (-17ºC) or greater than 104ºF (40ºC)
  • Battery temperature too warm or cold
  • 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
  • Engine has not reached normal operating temperature
  • Battery discharged
  • The transmission is not in DRIVE
  • Hood is open
  • Vehicle is in 4LO transfer case mode

Other factors which can inhibit AutoStop include: fuel level, accelerator pedal input, engine temp too high and steering angle.

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


     To Start The Engine While In Autostop Mode

    While in DRIVE the engine will start when the brake pedal is released or the throttle pedal is depressed. The transmission will automatically reengage upon engine restart. During this transition the

     To Manually Turn Off The Stop Start System

    1. Press the STOP/START Off switch (located on the switch bank). The light on the switch will illuminate. STOP/START OFF Switch 2. The STOP/START OFF message will appear in Electronic Vehicle Informa

     Engine Block Heater - If Equipped

    The engine block heater warms the engine, and permits quicker starts in cold weather. Connect the cord to a standard 110-115 Volt AC electrical outlet with a grounded, three-wire extension cord. 1500


     Towing Tips

    Before setting out on a trip, practice turning, stopping and backing the trailer up in an area away from heavy traffic. Automatic Transmission The "DRIVE" range can be selected when towing. The transmission controls include a drive strategy to avoid frequent shifting when towing. However, if frequen

     Tire Chains (Traction Devices)

    Use of traction devices require sufficient tire-to-body clearance. Follow these recommendations to guard against damage. Traction device must be of proper size for the tire, as recommended by the traction device manufacturer. Please follow the table below for proper tire size, chain type, and ax

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