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.

2003 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Service Specifications

SPECIFICATIONS

Application

Specification

Compressor Type

Nippondenso 7SBU16

Compressor Belt Deflection

⁽¹⁾

Compressor Oil Capacity

⁽²⁾

Refrigerant (R-134a) Capacity

Single A/C

21.2-24.7 ozs.

Dual A/C

30.0-33.5 ozs.

System Operating Pressures ⁽³⁾

High Side

199-213 psi (14-15 kg/cm² )

Low Side

21-36 psi (1.5-2.5 kg/cm² )

⁽¹⁾	Belt tension is maintained automatically.

⁽²⁾	Use ND-OIL 8 refrigerant oil. Refrigerant oil quantity not available. Refer to underhood A/C specification label.

⁽³⁾	Specification is with ambient temperature at 86-95°F (30-35°C) and engine speed at 2000 RPM.

Factory Service Tools

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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.