If there is a problem with the brake pedal while driving, emergency braking is possible by pulling up and holding the EPB switch. Braking is possible only while you are holding the EPB switch. However, braking distance will be longer than normal.
WARNING
Do not operate the parking brake while the vehicle is moving except in an emergency situation. It could damage the brake system and lead to a severe accident.
NOTICE
During emergency braking the Parking Brake Warning Light will illuminate to indicate that the system is operating.
NOTICE
If there is a noise or burning smell after using the emergency brake, have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
Hyundai Sonata LF 2014-2019 Service Manual: Accelerator Position Sensor (APS) Repair procedures
Inspection
1.
Connect the GDS on the Data Link Connector (DLC).
2.
Turn the ignition switch ON.
3.
Measure the output voltage of the APS 1 and 2 at C.T and W.O.T.
Specification: Refer to “Specification”
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Hyundai Sonata LF 2014-2019 Owners Manual: To decrease the Smart Cruise Control set speed
Follow either of these procedures:
Push the toggle switch down (SET-), and hold it. Your vehicle set speed
will decrease by 5 mph (10 km/h). Release the toggle switch at the speed you
want.
Push the toggle switch down (SET-), and release it immediately. The cruising
speed will decrease by ...