charging LEXUS RX450h 2015 User Guide

5
When trouble arises
7335-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning in dicates a possible problem in the brake system.
Immediately stop the vehi cle in a safe place and contact your Lexus
dealer.
* : Parking brake engaged warning buzzer
 P. 74 8
Stop the vehicle immediately.
The following warning indicates the po ssibility of damage to the vehicle
that may lead to an ac cident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer. Warning light Warning light/Details
(U.S.A.)

(Canada) Brake system warning light (warning buzzer)
*•Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Warning light Warning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging systemCalmly 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 nec-
essarily indicate a malfunction in the system.

5
When trouble arises
7855-2. Steps to take in an emergency
■
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.■
To prevent 12-volt battery discharge ●
Turn off the headlights and the audio sy stem while the hybrid system is off.●
Turn off any unnecessary electrical compon ents when the vehicle is running at a
low speed for an extended period, such as in heavy traffic.■
When the 12-volt battery is removed or discharged ●
The power back door must be initialized.
(  P. 8 3 7 )●
The hybrid system may not start. (
 P. 6 6 8 )
●
Make sure that the key is not inside th e vehicle when recharging or replacing
the 12-volt battery. The key may be locked in the vehicle if the alarm is activated.
(  P. 1 2 8 ) Start the engine of the second vehicle. Increase the engine
speed slightly and maintain that level for approximately 5 min-
utes to recharge the 12-volt battery of your vehicle.
Open and close any of the doors of your vehicle with the
“POWER” switch off.
Maintain the engine sp eed of the second ve hicle and start the
hybrid system of your vehicle by turning the “POWER” switch
to ON mode.
Make sure the “READY” indicat or comes on. If the indicator
does not come on, contact your Lexus dealer.
Once the hybrid system has st arted, remove the jumper cables
in the exact reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at your
Lexus dealer as soon as possible. STEP 4
STEP 5
STEP 6
STEP 7
STEP 8

7865-2. Steps to take in an emergency
■
Charging the 12-volt battery
The electricity stored in the 12-volt batter y will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of certain
electrical appliances. If the vehicle is left for a long time, the 12-volt battery may dis-
charge, and the hybrid system may be un able to start. (The 12-volt battery
recharges automatically while the hybrid system is operating.)
CAUTION■
Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the 12-volt battery: ●
Make sure each jumper cable is connecte d to the correct terminal and that it is
not unintentionally in contact with an y other than the intended terminal.●
Do not allow the other end of the jumper cable connected to the “+” terminal to
come into contact with any other parts or metal surfaces in the area, such as
brackets or unpainted metal.●
Do not allow the + and - clamps of the jumper cables to come into contact with
each other.●
Do not smoke, use matches, cigarette lighters or allow open flame near the 12-
volt battery.■
12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following precautions
when handling the 12-volt battery: ●
When working with the 12-volt battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to co me into contact with skin, clothing or the
vehicle body.
●
Do not lean over the 12-volt battery.
●
In the event that battery fluid comes into contact with the skin or eyes, immedi-
ately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.

5
When trouble arises
7875-2. Steps to take in an emergency
CAUTION●
Always wash your hands after handling the battery support, terminals, and other
battery-related parts.●
Do not allow children near the 12-volt battery.■
After recharging the 12-volt battery
Have the 12-volt battery inspected at your Lexus dealer as soon as possible.
If the 12-volt battery is deteriorating, co ntinued use may cause the 12-volt battery to
emit a malodorous gas, which may be de trimental to the health of passengers.■
When replacing the 12-volt battery
 P. 6 6 9
NOTICE■
When handling jumper cables
When connecting the jumper cables, ensure that they do not become entangled in
the cooling fans or belt.■
Avoiding accidental short-circuits
When connecting jumper cables, observe the following precautions: ●
Make sure each jumper cable is connected to the correct terminal.●
Do not allow the ends of the jumper cable used for the “+” terminals to come into
contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal.●
Do not allow the “+” and “-” terminals of the jumper cables to come into contact
with each other.■
Exclusive jump starting terminal precaution
The exclusive jump starting terminal is to be used when charging the 12-volt battery
from another vehicle in an emergency. It cannot be used to jump start another vehi-
cle.

8056-1. Specifications
6
Vehicle specifications Electrical system
Hybrid Transaxle
* : The fluid capacity is a reference quantity. If replacement is necessary, contact
your Lexus dealer.12-volt battery
Open voltage* at
68  F (20  C): 12.6  
12.8 V Fully charged
12.2  
12.4 V Half charged
11.8  
12.0 V Discharged
(*: Voltage checked 20 minutes after the hybrid sys-
tem and all the lights are turned off)
Charging rates 5 A max.
Fluid capacity*
Front 4.9 qt. (4.6 L, 4.0 Imp. qt.)
Rear (AWD models) 1.9 qt. (1.8 L, 1.6 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE■
Hybrid transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may ultimately dam-
age the hybrid transmission of your vehicle.

872Alphabetical index
Under tray................................................594
USB port* ................. 391, 399, 501, 510
Vanity lights
Vanity lights ..........................................596
Wattage................................................. 809
Vanity mirrors ........................................596
VDIM ...........................................................271
Vehicle data recordings ....................... 23
Vehicle dynamic s integrated
management .........................................271
Vehicle identification number ......... 799
Vehicle stability control........................271
Voice command switch* ....... 429, 553
Voice command system* .................. 446
VSC ..............................................................271 Warning buzzers
Brake system ........................................733
Open door ...........................................736
Seat belt reminder .............................736
Warning lights
Anti-lock brake system ...................734
Brake assist system ...........................734
Brake system ........................................733
Charging system ................................733
Electric power steering ...................734
Electronic engine control
system...................................................734
Low fuel level........................................736
Low tire pressure ...............................736
Malfunction indicator lamp ...........734
Master warning light.........................736
Open door ............................................736
Pre-collision system..........................734
Pretensioners .......................................734
Seat belt reminder light ...................736
Slip indicator .........................................734
SRS airbags ...........................................734
Tire pressure.........................................736U
V W

875What to do if...
A warning light or indicator
light comes on P. 7 3 3
If a warning light turns on or a warning
buzzer sounds...
■ Warning lights
or orP. 7 3 3 P. 7 3 4
P. 7 3 4 P. 7 3 6
P. 7 3 6
or P. 7 3 4 P. 7 3 6
P. 7 3 6 P. 7 3 4
P. 7 3 4 P. 7 3 4
P. 7 3 6 P. 7 3 6
P. 7 3 3 P. 7 3 4
*: The light flashes to indicate a malfunction.Brake system warning light Malfunction indicator lamp
Brake system warning
light Driver’s seat belt
reminder light
ABS warning light Front passenger’s seat belt
reminder light
Master warning light
Low fuel level warning light Electric power steering system
warning light
SRS warning light Pre-collision system
warning light*
Open door warning light Tire pressure warning light
Charging system warning
light Slip indicator