ESC ON condition
When the ignition switch is in the ON position, the ESC and the ESC OFF indicator lights illuminate for approximately three seconds and goes off, then the ESC is turned on.
If this light stays on, your vehicle may have a malfunction with the ESC system. Have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
When operating
When the ESC is in operation, the ESC indicator light blinks:
ESC OFF condition
To cancel ESC operation, press the ESC OFF button (ESC OFF indicator light illuminates).
If the ignition switch is placed to the LOCK/OFF position when ESC is off, ESC remains off. Upon restarting the engine, the ESC will automatically turn on again.
Hyundai Tucson (LM) 2010-2015 Service Manual: 4WD ECU Description and Operation
Description
4WD ECU processes signals from various sensors and determines
the current road and driving conditions. The ECU then utilizes this
information to implement precision control over the 4WD coupling's
multi-plate clutch and variably adjust the amount of torque delivered
tothe rear ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Specifications
Specifications
SPAS unitPowerIGN 1Operating voltage9V ~ 16VSPAS sensor (Front/Rear)Number of sensors4EA (Front), 4EA (Rear)Operation voltage 9V ~ 16VSupply current 0.5mA ~ 5mAOperation frequency 51.2 KhzDetecting range 2mDetection angle(horizontal) 75°Detection angle(V ...