STOP AND START SYSTEM


  1. OPERATING CONDITION


    1. The engine may stop if all of these conditions are detected.

      Item Operating Condition
      Idle Stop Engine Coolant Temperature 40°C to 105°C (104°F to 221°F)
      Outside Temperature -5°C (23°F) or more
      Driver Door Closed
      Brake Booster Vacuum Sufficient brake booster vacuum
      Brake Master Cylinder Fluid Pressure Fluid pressure is at the specified level
      Stop and Start Cancel Switch Off condition
      Vehicle Speed 0 km/h (0 mph)
      Clutch Pedal Released
      Shift Lever Position Neutral
      Engine Hood Closed
      Battery Voltage 6.5 V or more at engine start.
      Battery Temperature -10°C to 70°C (14°F to 158°F)*1
      Battery Integrated Current*2

      When the integrated current value meets any of the following conditions:


      • -4554 A-sec or more: Status of Battery Charge Control is Charge Control Coordination Mode, Stop and Start Standalone Mode or Low Temperature Mode. (After the integrated current value becomes -5544 A-sec or less, in order to charge the battery, control is prohibited until the value becomes -4554 A-sec or more.)

      • 0 A-sec or more: Status of Battery Charge Control is Stop and Start Restriction Mode or Temperature High/Low Mode. (After the integrated current value becomes -990 A-sec or less, in order to charge the battery, control is prohibited until the value becomes 0 A-sec or more.)
      Air Conditioning*3 / Heater During "cooling down or warming up" or defrost function is not operating.
      Steering Operation Not operated
      Engine Speed 1250 rpm or less
      Driver's Seat Belt 3 seconds or more elapse after the seat belt is fastened.
      ECU Learning Completed
      Simple Intelligent Parking Assist System*4 IPA main switch assembly is off condition.

      Tech Tips

      *1: When the battery temperature becomes -15°C (5°F) or lower or 75°C (167°F) or higher, control is prohibited. After control is prohibited and the battery temperature rises to -10°C (14°F) or higher or falls to 70°C (158°F) or lower, control is performed.

      *2: In the stop and start system, the engine stop and start ECU switches the system control mode (stop and start system control permitted/prohibited) based on the battery condition (charge/discharge condition) to protect the battery and to ensure stable engine restarting performance. The battery charge-discharge condition is determined from the integrated current value calculated from the battery state sensor assembly signal. The integrated current value is obtained by multiplying the current (ampere) detected by the battery state sensor assembly by the time (seconds), and is expressed in the unit A-sec. This can be measured by the Global TechStream (GTS). The engine stop and start ECU determines the power charge based on the integrated current value and prohibits stop and start system control if the value is below the threshold, because the battery might not be able to start the engine. The threshold varies according to the battery temperature and battery charge condition.

      *3: Models with air conditioning system

      *4: Models with simple intelligent parking assist system

  2. FUNCTION


    1. Settings of Stop and Start System (Models with Air Conditioning System)


      1. Using the steering pad switch assembly and the multi-information display on the combination meter assembly, the engine stop operation time due to stop and start control when the air conditioning system is on can be changed between "Standard" and "Extended" (stop and start priority).

      2. Pressing and holding the stop and start cancel switch (approximately 3 seconds or more) will change the amount of time the engine is stopped by stop and start system control between "Standard" and "Extended" (stop and start priority).