Hyundai Elantra: Air Conditioning System / Refrigerant Line
Components and components location

1. Refrigerant Pipe Assembly
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Repair procedures
1. | If the compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off. |
2. | Disconnect the negative (-) battery terminal. |
3. | Recover the refrigerant with a recovery / charging station. |
4. | Remove the bolts and the expansion valve (A) from the evaporator core. Tightening torque : 8.8 - 13.7 N.m ( 0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft) |

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5. | Loosen the mounting nuts, and then disconnect the discharge line (B) and liquid line (A) from the condenser. Tightening torque : 8.8 - 13.7 N.m ( 0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft) |

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6. | Disconnect the A/C pressure transducer connector (A). 
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7. | Remove the engine room under cover. (Refer to Engine Mechanical System - "Engine Room Under Cover") |
8. | Remove the bolts, then disconnect the suction line (A) and discharge line (B) from the compressor. Tightening torque : 21.6 - 32.4 N.m ( 2.2 - 3.3 kgf.m, 15.9 - 23.9 Ib-ft) |
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| Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination. |
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9. | Remove the refrigerant line assembly (A) to the upper of engine room. Tightening torque : 7.8 - 11.8 N.m ( 0.8 - 1.2 kgf.m, 5.8 - 8.7 Ib-ft) |

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10. | To install, reverse the removal procedure. •
| Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination. |
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| Tighten the bolt or nut joint to the specified torque. |
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| Using a gas leak detector, check for refrigerant leakage. |
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| Evacuate air in the refrigeration system and charge system with refrigerant. Capacity : 500 ± 25 g (17.6 ± 0.88 oz.) |
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Repair procedures
Oil Specification1.The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil...
Description and operation
DescriptionThe compressor is the power unit of the A/C system.It is located on the side of engine block and driven by a V-belt of the engine...
Other information:
System malfunction
When Highway Driving Assist or Highway
Lane Change function is not working
properly, the ‘Check Highway Driving
Assist (HDA) system’ warning message
will appear, and the warning light
will
illuminate on the cluster. We recommend
that the function be inspected by an
authorized HYUNDAI dealer...
You can start the engine without
inserting the key.
Information
If the smart key is not moved for some
time, the detection function for smart key
operation will pause. Lift the smart key to
activate the detection again.
NOTICE
To prevent damaging the smart key:
Keep the smart key away from water
or any liquid and fire...