Hyundai Tucson: Idle Stop and Go (ISG) System / ISG Malfunction
ISG system may not operate if:
- The Auto Stop (
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)
indicator
illuminates in yellow on the
instrument cluster. - The ISG OFF button illuminates.
Contact an authorized HYUNDAI dealer for assistance.
Conditions that Restart the
Engine
The engine is automatically restarted if:
The brake vacuum pressure is low.
The engine has stopped for about 5
minutes.
The air conditioning is ON with the fan
speed set to a certain hig ...
Calibrating the Battery Sensor
If the AGM battery is reconnected or
replaced, the ISG system does not
operate immediately. If you want to use
the system, the battery sensor needs to
be calibrated following the procedure.
1 ...
Other information:
Hyundai Tucson (NX4) 2022-2026 Service Manual: Heater Control Unit
- Components Location
1. Heater control unit
- Component
[Connector Pin Function]
Pin NoConnector AConnector B
1Driver's mode control actuator feedbackSensor ground
2Intake actuator feedbackECV (-)
3Passenger's temperature control actuator feedbackECV (+)
4Driver's temperature co ...
Hyundai Tucson (NX4) 2022-2026 Owner's Manual: Smart key precautions. Replacing the battery
Smart key precautions
The smart key may not work if any of the
following occur:
The smart key is close to a radio
transmitter such as radio station or
airport that may interfere with normal
operation of the transmitter.
The smart key is near a mobile two
way radio system or a mo ...
