Workshop Manuals Factory service & repair Lexus
01 Relays and Modules02 Sensors and Switches03 Maintenance04 Engine, Cooling and Exhaust05 Powertrain Management06 Transmission and Drivetrain07 Brakes and Traction Control08 Starting and Charging09 Power and Ground Distribution10 Steering and Suspension11 Heating and Air Conditioning12 Restraint Systems13 Accessories and Optional Equipment14 Body and Frame15 Cruise Control16 Instrument Panel, Gauges and Warning Indicators17 Lighting and Horns18 Windows and Glass19 Wiper and Washer Systems
Lexus LS 460 V8-4.6L (1UR-FSE) (2007)03 · Maintenance
03 · Maintenance

Refrigerant: Specifications (page 8 of 8)

Make
Lexus
Model
LS 460
Engine
V8-4.6L (1UR-FSE)
Year
2007
Section
Fluids › Refrigerant
MaintenanceSpecifications · page 8 of 8
background image

-

Do not operate the cooler compressor before charging refrigerant as the cooler compressor will not work properly without any refrigerant,
and will overheat.

-

Approximately 200 g (7.05 oz.) of refrigerant may need to be charged after bubbles disappear. The refrigerant amount should be checked
by measuring its quantity, and not with the sight glass.

4. WARM UP ENGINE

a. Warm up the engine at less than 1850 rpm for 2 minutes or more after charging the refrigerant.

NOTE:  Be sure to warm up the compressor when turning the A/C switch ON after removing and installing the cooler refrigerant lines
(including the compressor), to prevent damage to the compressor.

5. CHECK FOR LEAKAGE OF REFRIGERANT

a. After recharging the refrigerant gas, check for refrigerant gas leakage using a halogen leak detector.
b. Perform the operation under these conditions:

-

Stop the engine.

-

Secure good ventilation (the halogen leak detector may react to volatile gases other than refrigerant, such as evaporated gasoline or exhaust
gas).

-

Repeat the test 2 or 3 times.

-

Make sure that some refrigerant remains in the refrigeration system. When compressor is off: approximately 392 to 588 kPa (4 to 6
kgf/sq.cm, 57 to 85 psi)

c. Using a halogen leak detector, check the refrigerant line for leakage.
d. If a gas leak is not detected on the drain hose, remove the blower motor control (blower resistor) from the cooling unit. Insert the halogen leak

detector sensor into the unit and perform the test.

e. Disconnect the connector and leave the pressure switch on for approximately 20 minutes. Bring the halogen leak detector close to the

pressure switch and perform the test.

Pinch or Ctrl + scroll to zoom. Double-tap to reset.

Parts & tools for this job For 2007 Lexus LS 4.6L

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.