2023 TOYOTA C-HR coolant reservoir

5976-3. Do-it-yourself maintenance
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Maintenance and care
Engine compar tment
2ZR-FXE engine
Washer fluid tank (P. 609)
Engine coolant reservoir
( P. 602)
Fuse boxes ( P. 646)
Engine oil level dipstick
( P. 599)
Engine oil filler cap ( P. 600)
Power control unit coolant
reservoir ( P. 6 0 2 )
12-volt battery ( P. 6 0 4 )
Radiator ( P. 6 0 4 )
Condenser ( P. 6 0 4 )
Electric cooling fans

5986-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
M20A-FXS engine
■12-volt battery (M20A-FXS engine)
 P. 610
Washer fluid tank (P. 609)
Engine coolant reservoir
( P. 602)
Fuse boxes ( P. 646)
Power control unit coolant res-
ervoir ( P. 602)
Engine oil filler cap ( P. 6 0 0 )
Engine oil level dipstick
( P. 5 9 9 )
Radiator ( P. 6 0 4 )
Condenser ( P. 6 0 4 )
Electric cooling fans

6026-3. Do-it-yourself maintenance
C-HR_HEV_OM_Europe_OM10764E
The coolant level is satisfactory if it is between the “FULL” or “F” and
“LOW” or “L” lines on the reservoir when the hybrid system is c old.
■Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line. ( P. 755)
■Power control unit coolant reservoir
Reservoir
“FULL” or “F” line
“LOW” or “L” line
If the level is on or below the “LOW” or “L” line, add coolant up to the
“FULL” or “F” line. ( P. 755)
Coolant
2ZR-FXE engineM20A-FXS engine

6036-3. Do-it-yourself maintenance
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Maintenance and care
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high qua lity ethylene
glycol based non-silicate, non-am ine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant an d 50% deion-
ized water. (Minimum temperature: -35 C [-31F])
For more details about coolant, contact any authorized Toyota r etailer or
Toyota authorized repairer, or any reliable repairer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit c oolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer test the cap and check for leaks in the
cooling system.
WARNING
■ When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir c aps.
The cooling system may be under pressure and may spray hot cool ant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■ When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication , corrosion
protection and cooling. Be sure to read the antifreeze or coola nt label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging p arts or paint.

7567-2. Steps to take in an emergency
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The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator 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 immedi-
ately after a cold start. Confirm that the fans are operating b y checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. (The fans may not opera te in
freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repaire r.
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7577-2. Steps to take in an emergency
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When trouble arises
■If “Hybrid System Overheated Reduced Output Power.” is
shown on the multi-information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and
radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immediately contact any aut ho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable
repairer.
The coolant level is satisfactory if it is between the “FULL” o r “F”
and “LOW” or “L” lines on the reservoir.
Reservoir
“FULL” or “F” line
“LOW” or “L” line
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2
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2ZR-FXE engineM20A-FXS engine
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2ZR-FXE engineM20A-FXS engine

7597-2. Steps to take in an emergency
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When trouble arises
WARNING
■To prevent an accident or injury 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 hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● After the hybrid system has been turned off, check that the indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may au tomati-
cally start, or the cooling fans may suddenly operate even if t he gasoline
engine stops. Do not touch or approach rotating parts such as t he fan,
which may lead to fingers or clothing (especially a tie, a scar f or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
NOTICE
■ When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down suff iciently.
Adding cool coolant to a hot hybrid system too quickly can caus e damage to
the hybrid system.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust,
etc.).
● Do not use any coolant additive.