ECU LEXUS RX300H 2017 Owner's Guide

791-1. For safe use
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For safety and security
RC300h_EE(OM24740E)
Key of letters inserted in the above table:
IUF: Suitable for ISOFIX forward-facing child restraint systems of universal cat-
egory approved for use in this mass group.
IL: Suitable for ISOFIX child restraint systems of the categories for “specific
vehicles”, “restricted”, or “semi-universal”, approved for use in this mass
group.
X: ISOFIX position not suitable for ISOFIX child restraint systems in this mass
group and/or this size class.
*1: When installing an ISOFIX child restraint system on a rear seat, move the front seat as
far forward as possible.
*2: If the head restraint interferes with your child restraint system, and the head restraint
can be removed, remove the head restraint.
When using a “LEXUS MINI” or “LEXUS MIDI”, adjust the support leg and
ISOFIX connectors as follows:
Lock the ISOFIX connectors
where numbers 5 can be seen.
Lock the support leg where
3rd hole can be seen.
●Adjust the front seat so that it does not interfere with the child or child restraint
system.
●The child restraint systems mentioned in the table may not be available out-
side of the EU area.
●Other child restraint systems different from the systems mentioned in the
table can be used, but the suitability of the systems must be carefully checked
with the child restraint system manufacturer and retailer.
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801-1. For safe use
RC300h_EE(OM24740E)
■Installation with ISOFIX rigid anchor (ISOFIX child restraint system)
Install the child restraint system in accordance to the operation manual
enclosed with the child restraint system.
Remove the head restraint if it
interferes with your child restraint
system. ( P. 186)
Check the positions of the exclu-
sive fixing bars, and install the
child restraint system to the seat.
After installing the child restraint system, rock it back and forth to ensure
that it is installed securely.
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811-1. For safe use
1
For safety and security
RC300h_EE(OM24740E)
WARNING
■When installing a child restraint system
Observe the following precautions. Failure to do so may result in death or serious injury.
●Shake the child restraint system left and right, and forward and backward to ensurethat it has been securely installed.
●After securing a child restraint system, never adjust the seat.
●When using the lower anchors, be sure that there are no foreign objects around the anchors and that the seat belt is not caught behind the child restraint system.
●Follow all installation instructions provided by the child restraint system manufacturer.

821-1. For safe use
RC300h_EE(OM24740E)
■Anchor brackets (for top strap)
Anchor brackets are provided for the each rear seat.
Use anchor brackets when fixing the
top strap.
■Fixing the top strap to the anchor bracket
Install the child restraint system in accordance to the operation manual
enclosed with the child restraint system.
Remove the head restraint if it
interferes with your child restraint
system. ( P. 186)
Open the anchor bracket cover,
latch the hook onto the anchor
bracket and tighten the top strap.
Make sure the top strap is
securely latched.
Using an anchor bracket (for top strap)
Top strap
Anchor brackets
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Hook
Top strap
2

831-1. For safe use
1
For safety and security
RC300h_EE(OM24740E)
WARNING
■When installing a child restraint system
Observe the following precautions. Failure to do so may result in death or serious injury.
●Firmly attach the top strap and make sure that the belt is not twisted.
●Do not attach the top strap to anything other than the anchor bracket.
●Shake the child restraint system left and right, and forward and backward to ensure
that it has been securely installed.
●After securing a child restraint system, never adjust the seat.
●Follow all installation instructions provided by the child restraint system manufacturer.
NOTICE
■Anchor brackets (for top strap)
When not in use, make certain to close the lid. If it remains open, the lid may be dam-
aged.

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1
For safety and security
RC300h_EE(OM24740E)
1-2. Hybrid system
The illustration is an example for explanation and may differ from the actual item.
Hybrid system features
Your vehicle is a hybrid vehicle. It has characteristics different from conven-
tional vehicles. Be sure you are closely familiar with the characteristics of your
vehicle, and operate it with care.
The hybrid system combines the use of a gasoline engine and an electric
motor (traction motor) according to dr iving conditions, improving fuel effi-
ciency and reducing exhaust emissions.
Gasoline engine Electric motor (Traction motor)12

871-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
■EV indicator
■Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop automati- cally in the following conditions:
●During gasoline engine warm-up
●During hybrid battery (traction battery) charging
●When the temperature of the hybrid battery (traction battery) is high or low
●When the heater is switched on
■Charging the hybrid battery (traction battery)
As the gasoline engine charges the hybrid battery (traction battery), the battery does not
need to be charged from an outside source. However, if the vehicle is left parked for a long time the hybrid battery (traction battery ) will slowly discharge. For this reason, be sure to drive the vehicle at least once every few months for at least 30 minutes or 16 km
(10 miles). If the hybrid battery (traction battery) becomes fully discharged and you are unable to start the hybrid system, contact any authorized Lexus dealer or repairer, oranother duly qualified and equipped professional.
■Charging the 12-volt battery
 P. 584
The EV indicator comes on when the vehicle is
driven using only the electric motor (traction motor) or the gasoline engine is stopped.

891-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
The illustration is an example for explanation and may differ from the actual item.
Hybrid system precautions
Take care when handling the hybrid system, as it is a high voltage system
(about 650 V at maximum) as well as contains parts that become extremely
hot when the hybrid system is operatin g. Obey the warning labels attached to
the vehicle.
Warning label
Power control unit
Electric motor (traction motor)
Hybrid battery (traction battery)
Service plug
High voltage cables (orange)
Air conditioning compressor
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911-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
■If a warning light comes on, a warning message is displayed, or the 12-volt battery is dis-
connected
The hybrid system may not start. In this case, try to start the system again. If the “READY” indicator does not come on, contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
■Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be started, refuel the
vehicle with at least enough gasoline to make the low fuel level warning light (P. 539) go off. If there is only a small amount of fuel, the hybrid system may not be able to start.(The standard amount of fuel is about 10 L [2.7 gal., 2.2 Imp. gal.] when the vehicle is on a
level surface. This value may vary when the vehi cle is on a slope. Add extra fuel when the vehicle is inclined.)
■Electromagnetic waves
●High voltage parts and cables on hybrid ve hicles incorporate electromagnetic shield- ing, and therefore emit approximately the same amount of electromagnetic waves as conventional gasoline powered vehicles or home electronic appliances.
●Your vehicle may cause sound interference in some third party-produced radio parts.
■Hybrid battery (traction battery)
The hybrid battery (traction battery) has a lim ited service life. The lifespan of the hybrid
battery (traction battery) can change in accordance with driving style and driving condi- tions.
■Declaration of conformity
This model conforms to hydrogen emissions according to regulation ECE100 (Battery electric vehicle safety).

931-2. Hybrid system
1
For safety and security
RC300h_EE(OM24740E)
WARNING
■Road accident cautions
Observe the following precautions to reduce the risk of death or serious injury:
●Pull your vehicle off the road, apply the parking brake, shift the shift lever to P, and
turn the hybrid system off.
●Do not touch the high voltage parts, cables or connectors.
●If electric wires are exposed inside or ou tside your vehicle, an electric shock may
occur. Never touch exposed electric wires.
●If a fluid leak occurs, do not touch the fluid as it may be strong alkaline electrolyte from the hybrid battery (traction battery). If it comes into contact with your skin or
eyes, wash it off immediately with a large amount of water or, if possible, boric acid solution. Seek immediate medical attention.
●If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible. Never use a
fire extinguisher that is not meant for electric fires. Using even a small amount of water may be dangerous.
●If your vehicle needs to be towed, do so with front wheels raised. If the wheels con-
nected to the electric motor (traction mot or) are on the ground when towing, the motor may continue to generate electricity. This may cause a fire. ( P. 530)
●Carefully inspect the ground under the vehicle. If you find that liquid has leaked onto
the ground, the fuel system may have been damaged. Leave the vehicle as soon as possible.