Hyundai Tucson (LM) 2010-2015 Owners Manual: Air intake control
The air intake control button is used to select the outside (fresh) air position
or recirculated air position.
To change the air intake control position, push the control button.
Recirculated air position
The indicator light on the button illuminates when the recirculated air position
i ...
Hyundai Tucson (LM) 2010-2015 Service Manual: CVVT (Continuously Variable Valve Timing) System Description and Operation
Description
Continuous Variable Valve Timing (CVVT) system advances or
retards the valve timing of the intake and exhaust valve in accordance
with the ECM control signal which is calculated by the engine speed and
load.
By controlling CVVT, the valve over-lap or under-lap occurs,
which m ...