2016 Lexus CT200h radiator cap

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CT200h_OM_OM76197U_(U)7-3. Do-it-yourself maintenance
Engine compartment
■12-volt battery

P. 4 8 6
Engine coolant reservoir
(P. 4 8 2 )
Engine oil level dipstick (P. 4 7 9 )
Engine oil filler cap ( P. 4 7 9 )
Power control unit coolant reservoir ( P. 4 8 2 ) Brake fluid reservoir (
P. 484)
Fuse box ( P. 5 0 6 )
Radiator ( P. 484)
Condenser ( P. 484)
Electric cooling fans
Wa s h e r f l u i d t a n k ( P. 4 8 5 )1
2
3
4
5
6
7
8
9
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CT200h_OM_OM76197U_(U)
4837-3. Do-it-yourself maintenance
7
Maintenance and care
■Power control unit coolant reservoirReservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. ( P. 5 6 6 )
■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 hybrid
organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixt ure of 50% coolant and 50% deionized water.
(Minimum temperature: -31 F [-35 C])
Canada:
“Toyota Super Long Life Coolant” is a mixt ure of 55% coolant and 45% deionized water.
(Minimum temperature: -44 F [-42 C])
For more details about coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/p ower control unit coolant reservoir caps,
drain cock and water pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in the
cooling system.
1
2
3
WA R N I N G
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.
The cooling system may be under pressure and may spray hot coolant 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 cool-
ing. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

5698-2. Steps to take in an emergency
CT200h_OM_OM76197U_(U)
8
When trouble arises
Start the hybrid system and check for the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
WA R N I N G
■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.
●After the hybrid system has been turned of f, check that the indicator on the power
switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automatically start, or
the cooling fan may suddenly operate even if the gasoline engine stops. Do not touch
or approach rotating parts such as the fa n, which may lead to fingers or clothing
(especially a tie, a scarf or a muffler) ge tting caught, resulting in serious injury.
●Do not loosen the coolant reservoir cap while the hybrid system and radiator 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 sufficiently. Adding cool
coolant to a hot hybrid system too quickly can cause 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.
6

625Alphabetical index
CT200h_OM_OM76197U_(U)
P position switch .....................................163
Panic mode ................................................ 101
Parking brakeOperation ............................................... 168
Parking brake engaged warning buzzer/m essage..........529
Parking lights Light switch ............................................ 169
Replacing light bulbs ......................... 519
Parking lock ..............................................163
PCS (Pre-Collision System) ............ 239 Function ..................................................239
Pre-collision braking off switch....................................................239
Warning light ...................................... 530
Warning message ..................... 537, 542, 543
Personal lights.........................................427 Switch.......................................................428
Wattage ..................................................579
Power control unit coolant Capacity .................................................575
Checking................................................482
Preparing and checking before winter ....................................246
Radiator ................................................. 484
Power outlets ......................................... 440
Power steering (Electric Power
Steering system) ................................ 235 Warning light ...................................... 530 Power switch............................................ 156
Auto power off function .................. 158
Changing the power switch modes .................................................... 157
If your vehicle has to be stopped in an emergency.......... 523
Starting the hybrid system...............156
Power windows Jam protection function................... 138
Operation................................................ 137
Window lock switch .......................... 137
Pre-Collision System (PCS)............ 239 Function .................................................. 239
Pre-collision braking off switch ................................................... 239
Warning light .......................................530
Warning message.....537, 542, 543
Radar cruise control (dynamic radar cruise control)..........................189
Radiator.................................................... 484
Radio ......................................................... 259
Radio data system................................ 260
RDS ............................................................ 260
Rear seat Folding down the rear seatbacks ............................................. 122
Rear side marker lights Light switch.............................................169
Replacing light bulbs .........................519
P
R
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.