Hyundai Tucson: Cruise control operation / To decrease cruise control speed

Hyundai Tucson (LM) 2010-2015 Owners Manual / Driving your vehicle / Cruise control system / Cruise control operation / To decrease cruise control speed

Push the lever (1) down (to SET-) and hold it. Your vehicle will gradually slow down. Release the lever at the speed you want to maintain.
Push the lever (1) down (to SET-) and release it immediately. The cruising speed will decrease 1.0 mph (1.6 km/h) each time the lever is operated in this manner.
Lightly tap the brake pedal. When the vehicle attains the desired speed, push the lever (1) down (to SET-).

To increase cruise control speed

Push the lever (1) up (to RES+) and hold it, while monitoring the SET speed on the instrument cluster. Release the lever when the desired speed is shown and the vehicle will accelerate to ...

To temporarily accelerate with the cruise control ON

Depress the accelerator pedal.When you take your foot off the accelerator, the vehicle will return to the previously set speed. If you push the lever (1) down (to SET-) at the increased speed, the ...

Other information:

Hyundai Tucson (LM) 2010-2015 Service Manual: Input Speed Sensor Repair procedures
Inspection 1. Check signal waveform of Input & output speed sensor using the GDS. Specification: Refer to "Signal Wave Form" section. Removal 1. Remove the valve body assembly. (Refer to Hydraulic System - "Valve Body") 2. Disconnect the input & output speed sensor conn ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Repair procedures
Component Replacement After Deployment Before doing any SRS repairs, use the GDS Pro to check for DTCs. Refer to the Diagnostic Trouble Code list for repairing of the related DTCs. When the front airbag(s) deployed after a collision, replace the following items. - ...