2012 Lexus HS 250h Owners Manual - Page 549
2012 Lexus HS 250h Manual
Page 549 highlights
5-2. Steps to take in an emergency If your vehicle overheats The following may indicate that your vehicle is overheating: ● The high engine coolant temperature warning light comes on or flashes: The engine may be overheating. ● "HYBRID SYSTEM OVERHEAT" is shown on the multi-information display: The power control unit may be overheating. Follow the correction procedure as described below. Correction procedures
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5-2. Steps to take in an emergency
If your vehicle overheats
Correction procedures
■
If the engine coolant temperature warning light comes on or flashes
Stop the vehicle in a safe place and turn off the air conditioning
system.
Check to see if steam is coming out from the engine area.
If you see steam:
Stop the hybrid system. Carefully lift the hood after the steam
subsides and then restart the hybrid system.
If you do not see steam:
Leave the hybrid system operating and carefully lift the hood.
Check to see if the cooling fans are operating.
If the fans are operating:
Wait until the high engine coolant temperature warning light goes
off and then stop the hybrid system.
If the fans are not operating:
Stop the hybrid system immediately and call your Lexus dealer.
The following may indicate that your vehicle is overheating:
●
The high engine coolant temperature warning light comes on or
flashes:
The engine may be overheating.
●
“HYBRID SYSTEM OVERHEAT” is shown on the multi-information
display:
The power control unit may be overheating.
Follow the correction procedure as described below.