Hyundai Elantra: Electronic Stability Control (ESC) / 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 operating.
If ESC indicator light stays on, your vehicle may have a malfunction with the ESC system. When this warning light illuminates have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
The ESC OFF indicator light comes on when the ESC is turned off.
WARNING
When the ESC is blinking, this indicates the ESC is active:
Drive slowly and NEVER attempt to accelerate. NEVER turn the ESC off while the ESC indicator light is blinking or you may lose control of the vehicle resulting in an accident.
NOTICE
Driving with wheels and tires with 5 different sizes may cause the ESC system to malfunction. Before replacing tires, make sure all four tires and wheels are the same size. Never drive the vehicle with different sized wheels and tires installed.
ESC operation
ESC ON condition
When the ignition switch is in the ON position, the ESC and the ESC OFF indicator
lights illuminate for approximately three seconds. After both lights go off, the
ESC is enabled. ...
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 wh ...
Other information:
Hyundai Elantra AD (2016-2020) Service Manual: Knee Airbag (KAB) Module Description and Operation
Description
The Knee Airbag (KAB) is installed inside the crash pad lower
panel and protects the driver in the event of a frontal crash. The
SRSCM determines if and when to deploy the KAB.
•
Never attempt to measure the circuit resistance of the airbag
module (sq ...
Hyundai Elantra AD (2016-2020) Service Manual: Fuel Line Repair procedures
Removal
1.
Turn the ignition switch OFF, and then remove battery (-) cable.
2.
Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
3.
Disconnect the fuel feed quick-connector (A).
4.
Disconnect the vapor hose (A) wh ...
