Hyundai Tucson: Driving Your Vehicle / Idle Stop and Go (ISG) System
Idle Stop and Go helps reduce fuel consumption by automatically shutting down the engine, when the vehicle is at a standstill (i.e. red stop light, stop sign, and traffic jam).
ISG system is always active, when the engine is running.
Information
When the engine is automatically started by the ISG system, warning lights (e.g. ABS, ESC, ESC OFF, MDPS, and parking brake warning light) may illuminate for a few seconds if the battery voltage is low and does not indicate a malfunction with the ISG system.
- ISG System Operation
- ISG System Off
- Conditions that Restart the Engine
- ISG Malfunction
- Calibrating the Battery Sensor
Good Braking Practices
WARNING
Whenever leaving the vehicle or parking,
always come to a complete stop and
continue to depress the brake pedal.
Shift the gear to the P (Park) position,
apply the parking brake, and ...
ISG System Operation
Prerequisite for activation
The driver's seatbelt is fastened.
The driver's door and hood are closed.
The brake vacuum pressure is
adequate.
The battery sensor is activated and
the bat ...
Other information:
Hyundai Tucson (NX4) 2022-2026 Service Manual: Fuel Pump
- Inspection
[Fuel Pump]
1.Turn ignition switch OFF and disconnect the negative (-)battery cable.
2.Remove the fuel pump assembly.
3.Check motor operation by fuel pump connector (A) connecting power (No.4) and ground (No.5)
Pin NoDiscription
1Fuel sender signal
2-
3Fuel sender ground
...
Hyundai Tucson (NX4) 2022-2026 Service Manual: Heater & A/C Control Unit (Manual)
- Component
Connector Pin Function
Pin NoConnector A (Blower)Connector B (Main)
1LowBattery (+)
2CommonISG B+
3GroundILL+ (TAIL)
4Middle LowSensor REF (+5V)
5Middle HighMode control actuator feedback
6HighTemperature control actuator feedback
7Intake actuator feedback
8Evaporator tem ...
