Hyundai Elantra: Electronic Stability Control (ESC) / Indicator lights

Hyundai Elantra. 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: Input Speed Sensor Specifications
Specifications ? Type: Hall effect sensor ? Specifications ItemsSpecificationsOperation condition [°C(°F)](-40 ~ 150) -40 ~ 302Output voltage(V)High1.18 ~ 1.68Low0.59 ~ 0.84 ...

Hyundai Elantra AD (2016-2020) Service Manual: Rear Wheel Speed Sensor Repair procedures
Removal 1. Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported. 2. Remove the rear wheel and tire (A) from front hub . Tightening torque: 107.9 ~ 127.5 N.m (11.0 ~ 13.0 kgf.m, 79.6 ~ 94.0 lb-ft)     • Be careful not to dama ...

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