Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Air Conditioner
AIR CONDITIONER CUSTOMIZE PARAMETERS
| DISPLAY (ITEM) | DEFAULT | CONTENTS | SETTING |
|---|---|---|---|
| SET TEMP SHIFT (Set Temperature Shift) | NORMAL | To control with the shifted temperature against the display temperature. | +2C / +1C /NORMAL -1C / -2C |
| AIR INLET MODE (Air Inlet Mode) | AUTO | In case of turning the A/C ON when you desire to make the compartment cool down quickly, this is the function to change the mode automatically to RECIRCULATED mode. | MANUAL / AUTO |
| COMPRESSOR MODE (Compressor Mode) | AUTO | Function to turn the A/C ON automatically by pressing the AUTO button when the blower is ON and the A/C is OFF. | MANUAL / AUTO |
| DMPRS/DEF OPER (Compressor/Air Inlet DEF Operation) | LINK | Function to turn the A/C ON automatically linking with the FRONT DEF button when A/C is OFF. | NORMAL / LINK |
| MOTOR INITIALIZ (Step Motor Initializing (IG/off)) | OFF | Function to initialize the step motor after the ignition switch is OFF. | ON / OFF |
| EVAP CTRL (External Variable Control OFF) | AUTO | Function to set the evaporator control to the AUTOMATIC position (AUTO) to save power or to the coldest position (MANUAL) to dehumidify the air and to prevent the windows from fogging up. | MANUAL / AUTO |
| GAS SENS SHIFT (Shift Emission Gas Sensor Sensitivity) | NORMAL | Function to change the sensitivity of the exhaust gas sensor. | MU MORE /MORE /LI MORE / NORMAL /LI LESS / LESS / MU LESS |
| AUTO MODE (Cancel Auto Mode) | AUTO | Function to swing the vent vans automatically when A/C is ON. | MANUAL / AUTO |
| BUTTON PRS BUS (Cancel Operating Switch Sound) | ON | Function to sound a buzzer when a button is pressed. | OFF / ON |
| FILTER SENS (Shift Filter Clog Sensitivity) | NORMAL | Function to change the sensitivity of the air conditioning filter choking sensor. | LESS / NORMAL / MORE |
| FOOT AIR LEAK (Cancel Air Outlet Foot II) | ON | Function to cut off the airstream felt underfoot while the vehicle is moving. | OFF / ON |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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