2010 Lexus GS450h charging

502
4-3. Do-it-yourself maintenance
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
FuseAmpereCircuit
23A/F15Fuel system
24INV W/P10Hybrid system
25IGCT No.120Hybrid system, IGCT No.2, 
IGCT No.3
26FR FOG15Fog light
27FR TAIL10Tail light, rear side marker light
28WA S H20Windshield wipers and washer
29HORN10Horn
30H-LP UPR20Headlight high beam
31DC/DC140Charging system
32RAD FAN60Electric cooling fans
33LH J/B AM80
S/ROOF, FR P/SEAT LH, TV, A/C,
FUEL OPN, FR WIP, H-LP LVL, 
FR S/HTR LH, A/C W/P
34E/G AM60H-LP CLN, FR CTRL-AM, DEICER,
STB AM
35HEATER50Air conditioning system
36DEFOG50Rear window defogger
37ABS230Enhanced VSC, ABS
38RH J/B-AM80
AM1, OBD, STOP SW, TI & TE, 
FR P/SEAT RH, STR LOCK, 
SECURITY, ECU-IG R, RH-IG, 
F S/HTR RH, CIG, PWR OUTLET, 
AIR SUS

534
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
5-2. 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 indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
*1: Parking brake engaged warning buzzer:
P. 5 4 9
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer)*1
•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 lightWarning light/Details
Charging system warning light
Malfunction in the vehicle’s charging system.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, but then turns off, this does not necessar-
ily indicate a malfunction in the system.

546
5-2. Steps to take in an emergency
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
Wa r n i n g m e s s a g eDetails
(If equipped)
Malfunction in the active stabilizer suspension sys-
tem.

(If equipped)Malfunction in the PCS.
(Flashing)
(If equipped)
Malfunction in the radar cruise control system.
Stop the vehicle in a safe place. Turn the “POWER”
switch to OFF and then to ON mode again to reset
the cruise control system.
Malfunction in the charging system.
Malfunction in the power steering system.

594
6-1. Specifications
GS_HV_U (OM30C81U)
February 1, 2010 11:10 am
Electrical system
Differential
“Toyota Genuine Differential Gear Oil” is filled in your Lexus vehicle at fac-
tory fill. Use Lexus approved “Toyota Genuine Differential Gear Oil” or an
equivalent of matching quality to satisfy the above specification. Please con-
tact your Lexus dealer for further details.
12 volt battery
Open voltage at 
68F (20C):12.6  12.8V Fully charged
12.2  12.4V Half charged
11.8  12.0V Discharged
(Voltage is checked 20 minutes after the
hybrid system and all lights are turned off.)
Charging rates5A max.
Oil capacity1.42 qt. (1.35 L, 1.19 Imp.qt.)
Oil type and
viscosityToyota Genuine Differential Gear Oil LT
75W-85 GL-5 or equivalent

638
Alphabetical index
GS_HV_U (OM30C81U)
February 1, 2010 11:29 am
Vanity lights
Vanity lights .......................................... 407
Wattage.................................................. 597
Vanity mirrors ........................................ 407
Variable gear ratio steering .............. 215
Vehicle dynamics 
integrated management .................. 215
Vehicle identification number ........ 589
Vehicle load limits ................................ 232
Ventilators ................................................ 413
Warning buzzers
Brake system ....................................... 534
Downshifting .......................................... 157
Open door ..........................................536
Seat belt reminder.............................536
Warning lights
Anti-lock brake system...................535
Brake system ....................................... 534
Charging system ............................... 534
Electric power steering 
warning light .....................................535
Electronically 
controlled brake system .............535
Low fuel level .......................................536
Malfunction indicator lamp...........535
Master warning light ........................ 537
Open door ...........................................536
Pre-collision system .........................535
Seat belt reminder light ..................536
SRS airbags ..........................................535
Tire pressure warning light ........... 537Warning messages
Anti-lock brake system .................. 535
Brake assist .......................................... 535
Charging system ............................... 534
Dynamic radar 
cruise control ................................... 546
Engine oil level.................................... 549
Engine oil maintenance..................550
Engine oil pressure........................... 544
Headlight ............................................... 545
Hood ....................................................... 548
Hybrid system...........................544, 551
Intuitive parking 
assist ............................ 545, 545, 555
Moon roof............................................. 549
Open door ........................................... 548
Parking brake...................................... 549
Pre-collision system............ 546, 550
Refueling ................................................ 554
Rear lights system ............................. 545
Smart access system with 
push-button start ........................... 556
Steering lock...............535, 545, 558
Trunk........................................................ 549
VGRS ......................................................547
Washer fluid ........................................ 549V
W

641
What to do if...
GS_HV_U (OM30C81U)
February 1, 2010 11:14 am
The warning light or indicator
light comes onP. 5 3 4If a warning light turns on or a warning
buzzer sounds...
■Warning lights
or orv
P. 5 3 4P. 5 3 5
P. 5 3 6
or
P. 5 3 5P. 5 3 7
P. 5 3 5P. 5 3 7
P. 5 3 6P. 5 3 5
P. 5 3 5P. 5 3 5
P. 5 3 6P. 5 3 6
P. 5 3 4P. 5 3 7
*: Electronically Controlled Brake 
System
Brake system warning lightMalfunction indicator lamp
ABS warning lightDriver’s seat belt reminder 
light
Front passenger’s seat belt
reminder light
ECB* warning lightTire pressure warning light
Low fuel level warning lightElectric power steering
warning light
SRS warning lightPre-collision system warn-
ing light
Open door warning lightSlip indicator
Charging system warning
lightMaster warning light