2003 Lexus ES300 radiator cap

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Page 283 of 377

Lexus ES300 2003  Owners Manuals (in English) IN CASE OF AN EMERGENCY
269
IF YOUR VEHICLE OVERHEATS
If your engine coolant temperature gauge indicates
overheating, if you experience a loss of power, or if you
hear a loud knocking or pinging noise

Page 311 of 377

Lexus ES300 2003  Owners Manuals (in English) INTRODUCTION
297
ENGINE COMPARTMENT OVERVIEW
1 Power steering fluid
reservoir
2 Engine oil filler cap
3 Brake fluid reservoir
4 Fuse box
5 Battery
6 Fuse box
7 Radiator
8 Condenser
9 Electric cooling

Page 330 of 377

Lexus ES300 2003  Owners Manuals (in English) ENGINE
316If the coolant level drops within a short time after replenishing,
there 
may be a leak in the system.  V isually check the radiator,
hoses, engine coolant filler cap, radiator cap and drain