Hyundai Elantra: ESC (Electronic Stability Control) System / ESC OFF Switch
Description and operation
1. | 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. |
Repair procedures
1. | Turn ignition switch OFF and disconnect the negative (-) battery cable. |
2. | Remove the crash pad lower pannel. (Refer to Body - "Crash Pad Lower Pannel") |
3. | Loosen the screw and than removing the ESC OFF switch (A). 
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4. | Disconnect the crash pad lower switch connector (A). 
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5. | Remove the VDC OFF switch (A) after loosening screw. 

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Components and components location
Components[LHD]1. Front - right (FR)2. Rear - left (RL)3. Rear - right (RR)4. Front - left (FL)5. MC26. MC17. ABS control module (HECU)8...
Components and components location
Components1. Front wheel speed sensor2. Front wheel speed sensor connector
Repair procedures
Removal1.Turn ignition switch OFF and disconnect the negative (-) battery cable...
Other information:
Removal1.Loosen the wheel nuts slightly.Raise the vehicle, and make sure it is securely supported.2.Remove the front wheel and tire (A) from the front hub. Tightening torque : 107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
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Be careful not to damage the hub bolts when removing the front wheel and tire (A)...
Release Residual Pressure in Fuel Line
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There may be some residual pressure even after "Release Residual Pressure in Fuel Line" work, so cover the hose connection with a shop towel to prevent residual fuel from spilling out before disconnecting any fuel connection...