2016 Lexus ES300h radiator

5288-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
Add coolant if necessary.
Water can be used in an emergency
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 immediately after a
cold start. Confirm that the fans are op erating by checking the fan sound and air
flow. If it is difficult to check these, tu rn the air conditioning system on and off
repeatedly. (The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
5
6
7

5298-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
8
When trouble arises
■If “Hybrid System Overheated” 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 your Lexus
dealer.
The coolant level is satisfactory if it is between the “FULL” and “LOW” line
on the reservoir.Reservoir
“FULL”
“LOW”
Add coolant if necessary.
Water can be used in an emergency
if coolant is unavailable.
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.
1
2
3
1
2
4
1
2
3
5
6

5308-2. Steps to take in an emergency
ES300h_OM_OM33B71U_(U)
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 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 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 radiator cap or the co olant 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 additives.

592Alphabetical index
ES300h_OM_OM33B71U_(U)
Parking assist sensors (intuitive parking assist) .................. 237
Parking brake Operation ................................................ 177
Parking brake engaged warning buzzer ................................. 177
Parking lights Light switch ............................................ 178
Replacing light bulbs ....................... 489
PCS (Pre-Collision System) Function ................................................... 201
Warning light ...................................... 500
Personal lights........................................ 397
Power control unit .................................... 71
Power control unit coolant Capacity ................................................ 539
Checking................................................. 451
Preparing and checking before winter ................................... 280
Radiator ..................................................452
Power easy access system ................ 130
Power outlets ......................................... 406
Power steering (Electric Power
Steering system) ................................ 273 Warning light ...................................... 500
Power switch ............................................166 Power trunk opener and closer .........114
Power windows
Door lock linked window operation ...........................146
Jam protection function....................145
Operation................................................145
Window lock switch ..........................145
Pre-Collision System (PCS) Function ....................................................201
Warning light ...................................... 500
Radar cruise control (dynamic radar cruise control).........................222
Radiator.....................................................452
Radio
*........................................................ 312
RCTA (Rear Cross Traffic Alert).........................................264
Rear personal lights .............................397
Rear side marker lights Light switch.............................................178
Replacing light bulbs .......................489
Rear door sunshades.......................... 408
Rear sunshade Operation............................................. 408
Reverse operation feature ............409
P
R