Hyundai Elantra: ABS(Anti-Lock Brake System) / Front Wheel Speed Sensor
Components and components location

1. Front wheel speed sensor
| 2. Front wheel speed sensor connector
|
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). 
|
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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Components and components location
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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:
1. Door lock
2. Door unlock
3. Trunk open
4. Panic
5. Remote Start
If you press any button of the smart key
during the Detect and Alert stage, the
Smart Trunk release function will be
deactivated.
Make sure to be aware of how to
deactivate the Smart Trunk release
function for emergency situations...
Folding the rear seat
The rear seatbacks can be folded to
facilitate carrying long items or to
increase the luggage capacity of the
vehicle.
WARNING
Never allow passengers to sit on top
of the folded down seatback while
the vehicle is moving...