Hyundai Sonata: Electronic Stability Control (ESC) / ESC OFF usage

When Driving

The ESC OFF mode should only be used briefly to help free the vehicle if stuck in snow or mud by temporarily stopping operation of the ESC to maintain wheel torque.

To turn ESC off while driving, press the ESC OFF button while driving on a flat road surface.

NOTICE

To prevent damage to the transmission:

Information

Turning the ESC off does not affect ABS or standard brake system operation.

Indicator lights
When the ignition switch is placed to the ON position, the ESC indicator light illuminates, then goes off if the ESC system is operating normally. The ESC indicator light blinks whenever the ESC is ...

Hill-Start Assist Control (HAC)
The Hill-Start Assist Control (HAC) helps prevent the vehicle from rolling backwards when starting a vehicle from a stop on a hill. The system operates the brakes automatically for approximately 2 s ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Underbody maintenance
Corrosive materials used for ice and snow removal and dust control may collect on the underbody. If these materials are not removed, accelerated rusting can occur on underbody parts such as the fuel lines, frame, floor pan and exhaust system, even though they have been treated with rust protectio ...

Hyundai Sonata LF 2014-2019 Service Manual: Heater & A/C Control Unit (DATC) Repair procedures
Self Diagnosis 1. Self-diagnosis process.     • When operating the self-diagnostics, the below fault (self-diagnostics code) will blink at 0.5 seconds interval on the temperature display settings (driver's side only) and the remaining symbols are OFF . 2. Fa ...

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