Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Hyundai >> 2021 >> Santa Fe SE, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Idle Stop & Go (ISG) System - 2.5L (Except HEV) >> Repair Procedures >> Operating Condition For The ISG Function >> Auto stop or Auto start condition

Auto stop or Auto start condition

If all of the below conditions are satisfied

Information 

Component Conditions Remark
AT MT
ISG OFF Switch OFF OFF ISG OFF switch indicator lamp ->OFF
Drive door/Seat belt/Hood Closed Closed  
Gear state D range or N range Neutral When gear is shifted to R, entry into the ISG system is prohibited.
Brake pedal ON (Auto Stop)/OFF (Auto
Start)
-  
Clutch pedal - OFF (Auto Stop)/ON (Auto
Start)
 
Vehicle speed When entering below 0 kph after driving above 5 kph. When entering below 5 kph after driving above 10 kph. Idle stop is possible when shifting the gear from D to N after stopping (allowed only once)
A/C System When conditions of full auto air conditioner/manual air conditioner are satisfied When conditions of full auto air conditioner/manual air conditioner are satisfied Outside temperature is within -20 ~ 50 degrees
MDPS Within 180 degrees No limit  
RR Defogger switch Gasoline: OFF/Diesel: irrelevant Gasoline: OFF/Diesel: irrelevant  
Battery (Charge/discharge) Over SOC 68% Over SOC 68%  
Engine Coolant Temperature Gasoline: 70 ~ 75°C/Diesel: 20 ~ 30°C Different depending on the region and vehicle model
Ambient pressure Over 750 hPa No limit  
Slope From -5 to 12% (some SUV's are from -5 to 8%) No limit  
ECM/TCM When conditions (temperature, DTCs, OBD diagnosis, etc.) are satisfied In case of diesel, ISG operation is prohibited when regenerating the DPF.
ISG system error No occurred  
NOTE:
  • In congested areas, if the driver wishes to stop the vehicle and change lever from D-N, the ignition will turn

    OFF.