Page 517 of 724

5177-3. Do-it-yourself maintenance
7
Maintenance and care
RC200t_RC F_EE(OM24728E)
WARNING
The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energize d. To avoid death or serious injury, observe the following precautions.
■When working on the engine compartment
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driving
as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel andbattery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and corro-
sive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and damage painted sur- faces. If fluid gets on your hands or in your eyes, flush the affected area with clean
water immediately. If you still experience discomfort, consult a doctor.
■When working near the electric cooling fans or radiator grille
Be sure the engine switch is off. With the engine switch in IGNITION ON mode, the electric cooling fans may auto-matically start to run if the air conditioning is on and/or the coolant temperature is high.
( P. 529)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting in
your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to dirt in the air.
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refillin g, it may indicate a serious problem.
Page 522 of 724
5227-3. Do-it-yourself maintenance
RC200t_RC F_EE(OM24728E)
RC200t
For right-hand drive vehicles: The battery and the fuse box in front of the battery are located on the opposite side of the
engine compartment.
Engine compartment
Fuse boxes ( P. 566)
Battery ( P. 530)
Engine oil level dipstick
( P. 524)
Engine oil filler cap ( P. 525)
Engine coolant reservoir
( P. 527)
Washer fluid tank ( P. 534)
Electric cooling fans
Condenser ( P. 529)
Intercooler radiator ( P. 529)
Radiator ( P. 529)
Intercooler coolant reservoir
( P. 527)
1
2
3
4
5
6
7
8
9
10
11
Page 523 of 724
5237-3. Do-it-yourself maintenance
7
Maintenance and care
RC200t_RC F_EE(OM24728E)
RC F
For right-hand drive vehicles: The battery and the fuse box in front of the battery are located on the opposite side of theengine compartment.
Fuse boxes ( P. 566)
Battery ( P. 530)
Engine oil level dipstick
( P. 524)
Engine coolant reservoir
( P. 527)
Engine oil filler cap ( P. 525)
Washer fluid tank ( P. 534)
Electric cooling fans
Condenser ( P. 529)
Radiator ( P. 529)
1
2
3
4
5
6
7
8
9
Page 527 of 724
5277-3. Do-it-yourself maintenance
7
Maintenance and care
RC200t_RC F_EE(OM24728E)
■Engine coolant reservoir
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on
the reservoir when the engine is cold.
■Intercooler coolant reservoir (RC200t only)
The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir when the engine is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add coolant up to the “F” line. ( P. 659)
Coolant
RC200tRC F
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW” lin e, add coolant up to the “FULL” line.
( P. 659)
1
2
3
1
2
3
Page 528 of 724

5287-3. Do-it-yourself maintenance
RC200t_RC F_EE(OM24728E)
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybridorganic acid technology.
“Toyota Super Long Life Coolant” is a mixt ure of 50% coolant and 50% deionized water. (Minimum temperature: -35 C [-31F])
For more details about coolant, contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine and intercooler coolant reservoir caps, drain
cock and water pump. If you cannot find a leak, have any authorized Lexus dealer or repairer, or another dulyqualified and equipped professional, test the cap and check for leaks in the cooling sys-
tem.
WARNING
■When the engine is hot (RC200t)
Do not remove the engine coolant reservoir cap, intercooler coolant reservoir cap and radiator cap. ( P. 662)
The cooling system may be under pressure and may spray hot coolant if the cap is removed, causing serious injuries, such as burns.
■When the engine is hot (RC F)
Do not remove the engine coolant reservoir cap. ( P. 662) The cooling system may be under pressure and may spray hot coolant if the cap isremoved, causing serious injuries, such as burns.
Page 660 of 724
6608-2. Steps to take in an emergency
RC200t_RC F_EE(OM24728E)
The coolant level is satisfactory if it is between the full (“FULL” or “F”) and low
(“LOW” or “L”) lines on the reservoir.
4
Reservoir
“FULL” or “F”
“LOW” or “L”
Engine (RC200t)Engine (RC F)
Intercooler (RC200t)
1
2
3
Page 662 of 724
6628-2. Steps to take in an emergency
RC200t_RC F_EE(OM24728E)
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions. Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the h ood, do not open the hood until the steam has subsided. The engine compartment may be very hot.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans and
belts. Failure to do so may cause the hands or clothing to be caught, resulting in seri- ous injury.
●RC200t: While the engine and radiators arehot, do not loosen or remove the coolant res-ervoir cap, radiator cap, or intercooler cool-
ant reservoir cap. High temperature steam or coolant couldspray out.
●RC F: While the engine and radiator are hot,do not loosen or remove the coolant reser-voir cap.
High temperature steam or coolant could spray out.