2017 LEXUS LS600H ECU

891-2. Hybrid system
1
For safety and security
LS600h/LS600hL_EE(OM50G20E)
Hybrid system precautions
Take care when handling the hybrid system, as it contains a high voltage
system (about 650 V at maximum) as well as parts that become
extremely hot when the hybrid system is operating. Obey the caution
labels attached to the vehicle.
Caution label
Power control unit
Electric motor (traction motor)
Hybrid battery (traction bat-
tery)
DC/DC converter
Service plug
High voltage cables (orange)
Air conditioning compressor
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911-2. Hybrid system
1
For safety and security
LS600h/LS600hL_EE(OM50G20E)
■If a warning light comes on, a warning message is displayed, or the 12-volt battery is
disconnected
The hybrid system may not start. In that 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. 558) go off. If there is only a small amount of fuel, the hybrid system may not be
able to start. (The minimum amount of fuel to add to make the low fuel level warning
light go out is about 13 L [3.4 gal., 2.8 Imp. gal.], when the vehicle is on a level sur-
face. This value may vary when the vehicle is on a slope.)
■Electromagnetic waves
●High voltage parts and cables on the hybrid vehicles incorporate electromagnetic
shielding, 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 limited service life. The lifespan of the
hybrid battery (traction battery) can change in accordance with driving style and
driving conditions.
■Declaration of conformity
This model conforms to hydrogen emissions according to regulation ECE100 (Bat-
tery electric vehicle safety).

931-2. Hybrid system
1
For safety and security
LS600h/LS600hL_EE(OM50G20E)
CAUTION
■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 and connectors.
●If electric wires are exposed inside or outside 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 four wheels raised. If the wheels con-
nected to the electric motor (traction motor) are on the ground when towing, the
motor may continue to generate electricity. This may cause an electricity leakage
leading to a fire. ( P. 548)
●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.

951-2. Hybrid system
1
For safety and security
LS600h/LS600hL_EE(OM50G20E)
NOTICE
■Hybrid battery air vents
●Do not put foreign objects over the air vents. The hybrid battery (traction battery)
may overheat and be damaged.
●Clean the air vents regularly to prevent the hybrid battery (traction battery) from
overheating.
●Do not wet or allow foreign substances to enter the air vents as this may cause a
short circuit and damage the hybrid battery (traction battery).
●Do not carry large amounts of water such as water cooler bottles in the vehicle. If
water spills onto the hybrid battery (traction battery), the battery may be dam-
aged. Have the vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.

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LS600h/LS600hL_EE(OM50G20E)
1-3. Theft deterrent system
The indicator light flashes after the
power switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing
after the power switch has been
turned to ACCESSORY or ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type immobilizer system.
■Conditions affecting operation
Depending on surrounding environment and conditions, the immobilizer system
may not operate properly. This may prevent the hybrid system from starting.
( P. 159)
Immobilizer system
The vehicle’s keys have built-in transponder chips that prevent the
hybrid system from starting if a key has not been previously registered
in the vehicle’s on-board computer.
Never leave the keys inside the ve hicle when you leave the vehicle.
This system is designed to help pr event vehicle theft but does not guar-
antee absolute security ag ainst all vehicle thefts.

971-3. Theft deterrent system
1
For safety and security
LS600h/LS600hL_EE(OM50G20E)
■Certification for the immobilizer system

991-3. Theft deterrent system
1
For safety and security
LS600h/LS600hL_EE(OM50G20E)

1011-3. Theft deterrent system
1
For safety and security
LS600h/LS600hL_EE(OM50G20E)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation
of the system cannot be guaranteed.