Hyundai Sonata: SMART mode / Limitation of SMART mode

Hyundai Sonata LF 2014-2019 Owners Manual / Driving your vehicle / Drive Mode Integrated Control System / SMART mode / Limitation of SMART mode

The SMART mode may be limited in following situations. (The OFF indicator illuminates in those situations.)

The driver manually moves the shift lever : It deactivates SMART mode. The vehicle drives, as the driver manually moves the shift lever.
The cruise control is activated : The cruise control system may deactivate the SMART mode when the vehicle is controlled by the set speed of the smart cruise control system. (SMART mode is not deactivated just by activating the cruise control system.)
The transmission oil temperature is either extremely low or extremely high : The SMART mode can be active in most of the normal driving situations. However, an extremely high/ low transmission oil temperature may temporarily deactivate the SMART mode, because the transmission condition is out of normal operation condition.

Various driving situations, which you may encounter in SMART mode

The driving mode automatically changes to ECO mode after a certain period of time, when you gently depress the accelerator pedal (Your driving is categorized to be mild.). The driving mode auto ...

Cruise Control

Cruise Control Operation 1. CRUISE indicator 2. SET indicator The Cruise Control system allows you to drive at speeds above 20 mph (30 km/h) without depressing the accelerator pedal. WARNING Take th ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Engine Control Module (ECM) Repair procedures
Removal When replacing the ECM, the vehicle equipped with immobilizer must be performed the procedure as below. [In the case of installing used ECM] 1. Perform "Neutral mode" procedure with GDS. (Refer to "Immobilizer" in BE group) 2. Insert the key and turn it to th ...

Hyundai Sonata LF 2014-2019 Owners Manual: Air intake control
This button is used to select the outside (fresh) air position or recirculated air position. Recirculated air position The indicator light on the button illuminates when the recirculated air position is selected. With the recirculated air position selected, air from the passenger compartment wi ...