Hyundai Equus: Air conditioning refrigerant

Drive shafts and boots

Check the drive shafts, boots and clamps for cracks, deterioration, or damage. Replace any damaged parts and, if necessary, repack the grease. ...

Engine oil

...

See also:

Heater Control Unit Components and Components Location
Control Panel Component Connector Pin Function Pin No.Connector AConnector B1GroundIgnition 22-FET (Gate)3Mode Control Actuator (Vent)FET (Drain Feedback)4Mode Control Actuator (Defrost)Sen ...

Brake hoses and lines
Visually check for proper installation, chafing, cracks, deterioration and any leakage. Replace any deteriorated or damaged parts immediately. ...

ON/OFF Solenoid Valve Description and Operation
Description ON/OFF solenoid valve is attached to the valve body and is an on/off solenoid valve that is used to change gears. ...