2015 LEXUS RX450h battery

361-1. Hybrid system
■
If a warning light comes on or a warning message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In that ca se, try to start the system again. If the
“READY” indicator does not come on, contact your Lexus dealer.■
When refueling, the fuel filler door may take a few moments to open
As part of emission system operation, it ma y take up to 10 seconds for the fuel filler
door to automatically release after the opener switch is pressed. Before refueling is
possible, a message will be shown on the multi-information display. (  P. 119, 755)■
Electromagnetic waves ●
High voltage parts and cables on the hybrid vehicles incorporate electromag-
netic shielding, and theref ore emit approximately the same amount of electro-
magnetic waves as conventional gasoline powered vehicles or home electronic
appliances.●
Your vehicle may cause sound interference in some third party-produced radio
parts.■
Running out of fuel
When the vehicle has run out of fuel and th e hybrid system cannot be started, refuel
the vehicle with at least enough gasoline to make the low fuel level warning light
(  P. 733) 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 2.7 gal. [10.1 L, 2.2 Imp. gal.] when the vehicle is on a
level surface. This value may vary when the vehicle is on a slope.)■
Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service life. The lifespan of the
hybrid battery (traction battery) can chan ge in accordance with driving style and
driving conditions.

371-1. Hybrid system
1
Before driving CAUTION■
High voltage and high temperature precautions
The vehicle has high voltage DC and AC systems as well as a 12-volt system. DC
and AC high voltage is very dangerous and can cause severe burns and electric
shock that may result in death or serious injury. ●
Never touch, disassemble, remove or re place the high voltage parts, cables and
their connectors.●
The hybrid system will become hot after starting as the system uses high voltage.
Be careful of both the high voltage and the high temperature, and always obey
the caution labels attached to the vehicle.
■
Road accident cautions
Observe the following precautions to reduce the risk of death or serious injury:●
Pull your vehicle off the road, shift the shif t lever to P, apply the parking brake, 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 it 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, le ave 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. ●
Never try to open the service plug access
hole located under the rear seat. The ser-
vice plug is used only when the vehicle is
serviced and is subject to high voltage.

381-1. Hybrid system
CAUTION●
If your vehicle needs to be towed, do so with all front wheels (for 2WD models) or
four wheels (for AWD models) raised. If the wheels connected 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. 7 2 5 )●
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.■
Nickel-metal hydride battery
Your vehicle contains a sealed nickel-metal hydride battery. If disposed of improp-
erly, it is hazardous to the environment and there is a risk of severe burns and elec-
trical shock that may result in death or serious injury.■
Emergency shut off system
Carefully check to see if there are exposed high voltage parts or cables. Never
touch the parts or cables. (
 P. 3 4 )
NOTICE■
Hybrid battery air vents ●
Do not put foreign objects over the air vents. The hybrid battery (traction battery)
may overheat or lose power 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 an aquarium into the vehicle. If water
spills onto the hybrid battery (tractio n battery), the battery may be damaged.
Have the vehicle inspected by your Lexus dealer.

431-1. Hybrid system
1
Before driving
When the vehi-
cle is charging
the hybrid
battery (traction
battery) Navigation system
Lexus Display Audio system
Navigation system
Lexus Display Audio systemNavigation system or Lexus
Display Audio system Multi-information
display

441-1. Hybrid system
These images are examples only, and may vary slightly from actual conditions. When there is no
energy flow Navigation system
Lexus Display Audio system
Hybrid battery
(traction battery)
status Navigation system
Low FullLow Full
Lexus Display Audio system
Low FullNavigation system or Lexus
Display Audio system Multi-information
display

521-2. Key information
Using the mechanical key
To take out the mechanical key:
Electronic keys: Slide the release
lever and take the key out.
Card key: Press the lock release
button and take the key out. If the key cannot be inserted in a
lock cylinder, turn it over and re-
attempt to insert it. The mechanical
key with grooves on one side can
be inserted in one direction only.
After using the mechanical key,
store it in the electronic key. Carry
the mechanical key together with
the electronic key. If the electronic
key battery is depleted or the entry
function does not operate properly,
you will need the mechanical key.
(  P. 7 8 1 )■
Card key (if equipped) ●
The mechanical key that is stored inside the card key should be used only if a
problem arises, such as when the key does not operate properly.●
If it is difficult to take out the mechanical key, press down the lock release button
using a pen tip etc. If it is still difficult to pull it out, use a coin etc.
●
To store the mechanical key in the card
key, insert it while pressing the lock
release button.

531-2. Key information
1
Before driving ●
The card key is not waterproof.■
When required to leave the vehicle’s key with a parking attendant
Lock the glove box as circumstances demand. (  P. 5 8 6 )
Remove the mechanical key for your own use and provide the attendant with the
electronic key only.■
Key number plate
Keep the plate in a safe place such as your wallet, not in the vehicle. In the event that
a mechanical key is lost, a new key can be made at your Lexus dealer using the key
number plate. (  P. 7 8 0 )■
When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any
buttons on the electronic key while inside the aircraft cabin. If you are carrying an
electronic key in your bag etc., ensure that the buttons are not li kely to be pressed
accidentally. Pressing a button may cause the electronic key to emit radio waves
that could interfere with the operation of the aircraft. ●
If the battery cover is not installed and
the battery falls out or if the battery was
removed because the key got wet, rein-
stall the battery with the positive termi-
nal facing the Lexus emblem.

551-2. Key information
1
Before driving NOTICE■
Precautions for handling the card key ●
Do not apply excess force when inserting the mechanical key into the card key.
Doing so may damage the card key.●
If the battery or card key terminals get wet, the battery may corrode and the card
key may stop working.
If the key is dropped into water, or if drinking water etc. is spilled on the key,
immediately remove the battery cover and wipe the battery and terminals. (To
remove the battery cover, lightly grasp and pull it.) If the battery is corroded, have
your Lexus dealer replace the battery.●
Do not crush the battery cover or use a screwdriver to remove the battery cover.
Forcibly removing the battery co ver may bend or damage the key.●
If the battery cover is frequently removed, the battery cover may become loose.●
When installing the battery, make sure to check the direct ion of the battery.
Installing the battery in the wrong direct ion may cause the battery to deplete rap-
idly.●
The surface of the card key may be damage d, or its coating may peel off in the
following situations:
• The card key is carried together with hard objects, such as coins and keys.
• The card key is scraped with a sharp object, such as the tip of a mechanical
pencil.
• The surface of the card key is wiped with thinner or benzene.