Hyundai Tucson: Warnings and indicators / Key reminder warning chime

If the driver’s door is opened while the ignition key is left in the ignition switch (ACC or LOCK position), the key reminder warning chime will sound. This is to prevent you from locking your keys in the vehicle. The chime sounds until the key is removed from the ignition switch or the driver’s door is closed.

KEY OUT indicator (if equipped)
When the Engine Start/Stop button is in the ACC or ON position, if any door is open, the system checks for the smart key. If the smart key is not in the vehicle, the indicator will blink, and if ...

Steering wheel
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Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: All Wheel Drive (AWD) mode selection
WARNING If AWD warning light ( ) stays on the instrument cluster, your vehicle may have a malfunction with the AWD system. When the AWD warning light () illuminates have your vehicle checked by an authorized HYUNDAI dealer as soon as possible. CAUTION When driving on normal roads, deactiv ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Direct Electro Hydraulic Actuator Coupling 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 rea ...

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