engine Lexus IS300h 2014 Workshop Manual

5038-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
→Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly qualified
and equipped professional. Continuing to drive the vehicle may
be dangerous.
Brake system warning light
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→Immediately stop the vehicle in a safe place and contact any
authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The emission control system (if equipped);
• The electronic engine control system; or
• The electronic throttle control system
→Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
immediately.
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5138-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the vehicle is being driven at 5 km/h (3
mph) or more with the parking brake still engaged
A buzzer also sounds.
→Release the parking brake.
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates a malfunction in:
•The ABS; or
• The brake assist system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the engine coolant temperature is too high
A buzzer also sounds.
→P. 5 5 2
(If equipped)
Indicates that the radar sensor is dirty or covered with
ice
A buzzer also sounds.
→Clean the sensor.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
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5158-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
(If equipped)
Indicates a malfunction in the PCS (Pre-Crash Safety
system)
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
(If equipped)
Indicates a malfunction in the BSM (Blind Spot Monitor)
system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates abnormal engine oil pressure
A buzzer also sounds.
→Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
A buzzer also sounds.
→Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Indicates that the Pop Up Hood system has operated
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates a malfunction in the Pop Up Hood system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the hybrid system was stopped while driv-
ing
A buzzer also sounds.
→Operate the steering wheel with more force than
usual.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
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5168-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
Indicates that the power switch is turned off or turned to
ACCESSORY mode and the driver’s door is opened
while the lights are turned on
A buzzer also sounds.
→Turn the lights off.
(If equipped)
Indicates that the moon roof is not fully closed (with the
power switch off, and the driver’s door open)
A buzzer also sounds.
→Close the moon roof.
Indicates that the windows are not fully closed (with the
power switch off, and the driver’s door open)
A buzzer also sounds.
→Close all the windows.
(If equipped)
Indicates that the windows and the moon roof are not
fully closed (with the power switch off, and the driver’s
door open)
A buzzer also sounds.
→Close all the windows and the moon roof.
Indicates a malfunction in the brake override system
A buzzer also sounds.
→Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that engine oil level is low
A buzzer also sounds.
→Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated
This message may be displayed when driving under
severe operating conditions. (For example, when driv-
ing up a long steep hill.)
A buzzer also sounds.
→Stop and check. (→P. 552)
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)
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5208-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
■Warning messages
The warning message illustrations used are intended as examples, and may differ from
the image that is actually displayed on the multi-information display.
■Warning message in radar cruise mode (if equipped)
In the following situations, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the vehicle
ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LDA (Lane Departure Alert) lane departure warning function (if equipped)
In the following situations, the warning message will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LDA system func-
tions
●When the lane lines cannot be recognized
■After changing the engine oil (if equipped)
Make sure to reset the oil change system. (→P. 4 4 2 )
■Warning buzzer
→P. 5 0 7
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5248-2. Steps to take in an emergency
IS300h_EE(OM53C61E)

Indicates that:
• With the power switch off, the
doors were unlocked and then the
driver’s door was opened and
closed;
• The power switch was turned to
ACCESSORY mode without
starting the hybrid system; or
• The shift lever was shifted to P
from another position with the
power switch in ON mode.
→Press the power switch while
depressing the brake pedal.
Once
The power switch has been turned
off with the shift lever in a position
other than P.
→Shift the shift lever to P.
Once
After the power switch has been
turned off with the shift lever in a
position other than P, the shift lever
has been shifted to P.
→Tu r n t h e p o w e r s w i t c h o f f .

Power was turned off due to the
automatic power off function.
→Next time when starting the
hybrid system, increase the
engine speed slightly and main-
tain that level for approximately
5 minutes to recharge the 12-
volt battery.
Con-
tinuous
Indicates that the hybrid system was
stopped in an emergency while driv-
ing
→To restart the hybrid system,
shift the shift lever to N and turn
the power switch to ON mode.
*
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
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5488-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the exclusive jump starting ter-
minal on your vehicle.
Connect the clamp on the other end of the positive cable to the positive (+)
battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery terminal on the
second vehicle.
Connect the clamp at the other end of the negative cable to a solid, station-
ary, unpainted metallic point away from the exclusive jump starting terminal
and any moving parts, as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the 12-volt bat-
tery of your vehicle.
Open and close any of the doors of your vehicle with the power switch off.
Maintain the engine speed of the second vehicle and start the hybrid system
of your vehicle by turning the power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator does not come
on, contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.3
1
2
3
4
4
5
6
7
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5528-2. Steps to take in an emergency
IS300h_EE(OM53C61E)
●The needle of the engine coolant temperature gauge (→P. 109) enters the
red zone or a loss of hybrid system power is experienced. (For example, the
vehicle speed does not increase.)
●“Hybrid System Overheat” is shown on the multi-information display.
●Steam comes out from under the hood.
■If the needle of the engine coolant temperature gauge enters the red zone
Stop the vehicle in a safe place and turn off the air conditioning system, and
then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently, inspect
the hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho-
rized Lexus dealer or repairer, or
another duly qualified and
equipped professional.
The coolant level is satisfactory if
it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2
4
1
2
3
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5558-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53C61E)
CAUTION
■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 “READY” indicator is off.
When the hybrid system 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 belt and fan, which may lead to fingers or
clothing (especially a tie, a scarf or a muffler) getting caught, resulting in serious
injury.
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.
●Do not loosen the coolant reservoir caps or
water filler cap while the hybrid system and
radiator are hot.
High temperature steam or coolant could
spray out.
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561
9 9-1. Specifications
Vehicle specifications
IS300h_EE(OM53C61E)
■Vehicle identification number
The vehicle identification number (VIN) is the legal identifier for your vehicle.
This is the primary identification number for your Lexus. It is used in register-
ing the ownership of your vehicle.
This number is stamped on the top left of the instrument panel and in the
engine compartment.
This number is also on the manufac-
turer’s label.
■Engine number
The engine number is stamped on
the engine block as shown.
Vehicle identification
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