2010 Lexus RX 450h User Guide - Page 628

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5-2. Steps to take in an emergency

■

If ±HYBRID SYSTEM OVERHEAT² is shown on the multi-informa-

tion display

Stop the vehicle in a safe place and

turn off the air conditioning sys-

tem.

Ensure that the opening for the oil

cooler is not blocked by dirt or any

other

foreign

substance.If

the

opening is not blocked or if the

message does not disappear after

some time the opening has been

cleaned, proceed to STEP 2.

Leave the hybrid system operating and carefully lift the hood.

Check if the cooling fans are operating.

If the fans are operating:

Wait until the “HYBRID SYSTEM OVERHEAT” message disap-

pears and then stop the hybrid system.

If the message does not disappear, call your Lexus dealer.

If the fans are not operating:

Stop the hybrid system immediately and call your Lexus dealer.

After the hybrid system has cooled

down, check the power control

unit coolant level and inspect the

cooling system for leaks.

STEP

1

STEP

2

STEP

3

STEP

4