Hyundai Elantra: ESC (Electronic Stability Control) System / Front Wheel Speed Sensor
Components and components location

1. Front wheel speed sensor
| 2. Front wheel speed sensor connector
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Repair procedures
1. | Turn ignition switch OFF and disconnect the negative (-) battery cable. |
2. | Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported. |
3. | Remove the rear wheel and tire (A) from the rear hub. •
| Be careful not to damage the hub bolts when removing the front wheel and tire (A). |
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4. | Remove the front wheel guard. (Refer to Body - "Front Wheel Guard") |
5. | Disconnect the front wheel speed sensor connector (A) and then remove the fixing clip (B). 
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6. | Remove the front wheel speed sensor cable braket bolt (A). Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft) |

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7. | Remove the wheel speed sensor (A) from the Knuckle after loosening the mounting bolt. Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft) |

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1. | To install, reverse the removal procedure. |
1. | Measure the output voltage between the terminal of the wheel speed sensor and the body ground. •
| In order to protect the wheel speed sensor, when measuring output voltage, a 100Ω resister must be used as shown. |
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2. | Compare the change of the output voltage of the wheel speed sensor to the normal change of the output voltage as shown below. 
V_low : 0.59V - 0.84V V_high : 1.18V - 1.68V Frequency range : 0.03 - 3,000 Hz |
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Description and operation
Description1.The ESP OFF switch is for the user to turn off the ESP system.2.The ESP OFF lamp is on when ESP OFF switch is engaged...
Components and components location
Components[Rear torsion beam disc brake type]1. Rear wheel speed sensor2. Rear wheel speed sensor connector[Rear multi link disc brake type]1...
Other information:
Front
Rear
Cups or small beverages cups may be
placed in the cup holders.
WARNING
Avoid abrupt starting and braking
when the cup holder is in use to
prevent spilling your drink. If hot
liquid spills, you could be burned.
Such a burn to the driver could cause
loss of vehicle control resulting in an
accident...
Repair procedures
Replacement1.Turn the steering wheel so that the front wheels are placed in the straight ahead position.
•
If the steering wheel and the front tires are not set straight ahead together, it may affect the number of circulation of steering wheel and damage the cable inside the clock spring...