Lexus IS350 AWD Owner's Manual page 581

Add coolant if necessary.
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Engine (IS350

IS300 AWD)
Intercooler (IS300)

Water can be used in an emergency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check that the radi-
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ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are operating by checking the fan sound and air flow.
If it is difficult to check these, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
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Stop the engine immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
Check if "Engine Coolant Temp High Stop in a Safe Place See Owner's Man-
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ual" is shown on the multi-information display.
If the message does not disappear:
Stop the engine and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
IS350 AWD/IS350/IS300 AWD/IS300_U
8-2. Steps to take in an emergency
AWD/IS350/ Engine (IS300)

581
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