2014 Lexus GS450h check engine

713
GS450h_OM_OM30D52U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Light bulbs
Check the wattage of the light bulb to be replaced. ( →P. 8 1 7 )
→ P. 664
■Front
XVehicles with discharge headlights
You may replace the following bulbs by yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb replace-
ment seems difficult to perfor m, contact your Lexus dealer.
For more information about replacing other light bulbs, contact your
Lexus dealer.
Preparing for light bulb replacement
Removing the engine compartment covers
Bulb locations
Front turn signal light
Halogen fog light (if equipped)1
2
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7597-2. Steps to take in an emergency
GS450h_OM_OM30D52U_(U)
7
When trouble arises
*: For the EV drive mode operating conditions: →P. 2 0 0
Indicates that the EV
drive mode is not avail-
able
*
The reason the EV
drive mode is not avail-
able (the vehicle is
idling, battery charge is
low, speed is higher
than the EV drive
mode operating speed
range, accelerator
pedal is depressed too
much) may be dis-
played.
Use the EV drive mode
when it becomes avail-
able.
Indicates that the EV
drive mode has been
automatically canceled
*
The reason the EV
drive mode is not avail-
able (the battery
charge is low, speed is
higher than the EV
drive mode operating
speed range, accelera-
tor pedal is depressed
too much) may be dis-
played.
Drive the vehicle for a
while.
Indicates that engine oil
level is lowCheck the level of engine
oil, and add if necessary.
Warning messageDetailsCorrection procedure
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7627-2. Steps to take in an emergency
GS450h_OM_OM30D52U_(U)
Indicates that the LKA
(Lane-Keeping Assist)
system detects no-
handed driving (while the
lane keeping assist func-
tion is operating)The warning buzzer
sounds twice.
Grip the steering wheel
firmly.
Indicates that the Blind
Spot Monitor sensors or
the surrounding area on
the bumper is dirty or
covered with ice
Clean the sensor and its
surrounding area on the
bumper.
Indicates that the hybrid
system has overheatedThis message may be
displayed when driving
under severe operating
conditions. (For exam-
ple, when driving up a
long steep hill.)
Stop and check.
(→ P. 800)
Indicates that the hybrid
system output is limited
because the engine oil is
overheatedDrive the vehicle at a safe
speed until the warning
message disappears.
Warning messageDetailsCorrection procedure
(If equipped)
(If equipped)
GS450h_OM_OM30D52U_(U).book Page 762 Monday, July 29, 2013 12:07 PM

8017-2. Steps to take in an emergency
GS450h_OM_OM30D52U_(U)
7
When trouble arises
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.Reservoir
“FULL”
“LOW”
Coolant inlet cap
Add coolant if necessary.
(→ P. 803)
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fans operate and to check for coolant
leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on immediately
after a cold start. Confirm that the fans are operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning sys-
tem on and off repeatedly. (The fans may not operate in freezing tempera-
tures.)
If the fans are not operating:
Stop the hybrid system immediatel y and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
4
1
2
3
4
5
6
7
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8047-2. Steps to take in an emergency
GS450h_OM_OM30D52U_(U)
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot.
●After the hybrid system has been turned off, check that the indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automatically
start, or the cooling fan may suddenly operate even if the gasoline engine stops.
Do not touch or approach rotating parts such as the fan, which may lead to fin-
gers or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in
serious injury.
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too quickly can cause damage to the hybrid
system.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
●Do not use any coolant additives.
●Do not loosen the coolant inlet cap or the
coolant reservoir cap while the hybrid sys-
tem and radiator are hot.
High temperature steam or coolant could
spray out.
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GS450h_OM_OM30D52U_(U)
8118-1. Specifications
8
Vehicle specifications
*: The engine oil capacity is a reference quantity to be used when changing theengine oil. Warm up the engine and turn off the hybrid system, wait more than 5
minutes, and check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the fol-
lowing grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Lubrication system
Oil capacity
(Drain and refill  reference
*)
Wi t h f il te r
Wi t h o u t fi lt er
6.6 qt. (6.2 L, 5.5 Imp.qt.)
6.2 qt. (5.9 L, 5.2 Imp.qt.)
GS450h_OM_OM30D52U_(U).book Page 811 Monday, July 29, 2013 12:07 PM

872Alphabetical index
GS450h_OM_OM30D52U_(U)
Eco drive mode .....................................305
EDR (Event data recorder) .................... 11
Electric motor (traction motor) ..........72
Electric Power Steering (EPS) .......308Function ................................................. 308
Warning light .......................................738
Warning message ............................. 752
Electronic key ......................................... 120 Battery-saving function .................... 129
If the electronic key does not operate properly.............................793
Replacing the battery ...................... 694
Emergency, in case of
If a warning buzzer sounds........... 737
If a warning light turns on............... 737
If a warning message is displayed ........................................ 747
If the 12-volt battery is discharged .........................................796
If the electronic key does not operate properly ........793
If the hybrid system will not start....................................... 788
If the parking brake cannot be released..........................791
If the shift lever cannot be shifted from P ........... 790
If you have a flat tire .......................... 775
If you think something is wrong............................................... 736
If your vehicle becomes stuck .... 805
If your vehicle has to be stopped in an emergency ............................. 729
If your vehicle needs to be towed .......................................730
If your vehicle overheats ...............800 Emergency flashers .............................728
Energy monitor .........................................112
Engine
Accessory mode .................................194
Compartment .....................................663
Engine switch ........................................193
Hood....................................................... 660
How to start the hybrid system ....193
Identification number ...................... 809
Ignition switch
(power switch) ..................................193
Overheating........................................ 800
Power switch .........................................193
Engine compartment cover..............664
Engine coolant ...................................... 668 Capacity .................................................. 813
Checking .............................................. 668
Preparing and checking
before winter .................................... 342
Engine coolant temperature
gauge .......................................................... 91
Engine oil ................................................. 665
Capacity .................................................... 811
Checking ...............................................665
Oil level warning message ........... 759
Oil pressure warning message........................... 748
Preparing and checking
before winter .................................... 342
Engine oil maintenance data ........... 650
Engine switch........................................... 193
EPS (Electric Power Steering) ....... 308
Function ................................................. 308
Warning light ....................................... 738
Warning message............................. 752
EV drive mode ...................................... 200
Event data recorder (EDR).....................11
E
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