2014 Lexus GS450h warning lights

GS450h_OM_OM30D52U_(U)
2154-2. Driving procedures
4
Driving
■When the parking brake is set automatically while the system is holding the brakes
The parking brake will not be released automatically. Release the parking brake by
operating the parking brake switch, making sure that the parking brake indicator
light goes off. (→P. 2 1 1 )
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. ( →P. 7 3 9 , 7 5 1 )
CAUTION
■When the vehicle is on a steep incline
When using the brake hold system on a steep incline exercise caution. The brake
hold function may not hold the vehicle in such a situation.
■When stopped on a slippery road
The system cannot stop the vehicle when the gripping ability of the tires has been
exceeded. Do not use the system when stopped on a slippery road.
NOTICE
■When parking the vehicle
The brake hold system is not designed for use when parking the vehicle for a long
period of time. Turning the power switch off while the system is holding the brake
may release the brake, which would cause the vehicle to move. When operating
the power switch, depress the brake pedal, set the parking brake and shift the shift
lever to P.
GS450h_OM_OM30D52U_(U).book Page 215 Monday, July 29, 2013 12:07 PM

GS450h_OM_OM30D52U_(U)
2774-5. Using the driving support systems
4
Driving
■If there are lane markers on only one side of the vehicle
The lane keeping assist function will not operate. Also, the lane departure warning
will not operate for the side on which lane markers could not be recognized.
■Conditions in which the function may not operate correctly
In the following conditions, the LKA system functions may not operate, or it may not
be possible to ensure adequate performance. Also, the camera sensor may be
unable to recognize lane lines causing the lane departure warning function to oper-
ate incorrectly, or the lane keeping assist function may not operate properly. How-
ever, this does not indicate a malfunction.
●When driving through an area with no lane markers, such as a tollbooth, a crossing
or before a ticket checkpoint
●When driving on a sharp curve
●When lanes are extremely narrow or extremely wide
●When the vehicle leans to one side an unusual amount due to a heavy load or
improper tire inflation pressure
●When the following distance between your vehicle and the vehicle ahead is
extremely short
●When the lane markers are yellow (These may be more difficult for the system to
recognize compared to white markers.)
●When the lane markers are broken, “Botts’ dots”, “Raised pavement marker” or
stones
●When lane markers are obscured or partially obscured by sand, dirt, etc.
●When there are shadows on the road running parallel with lane markers, or if a
shadow covers the lane markers
●When driving on a particularly bright road surface, such as concrete
●When driving on a road surface that is bright due to reflected light
●When driving in a location where the light level changes rapidly, such as the
entrance to or exit from a tunnel
●When sunlight or the headlights of oncoming vehicles are shining directly into the
camera lens
●When driving on roads that are branching or merging
●When driving on a road surface that is wet due to rain, previous rainfall, standing
water, etc.
●When the vehicle experiences strong up-and-down motion such as when driving
on an extremely rough road or on a seam in the pavement
●When headlight brightness at nighttime is reduced due to dirt on the lenses, or
when the headlights are misaligned
●When driving with a strong crosswind
GS450h_OM_OM30D52U_(U).book Page 277 Monday, July 29, 2013 12:07 PM

708
GS450h_OM_OM30D52U_(U)
6-3. Do-it-yourself maintenance
■Tr u n k
FuseAmpereCircuit
1PSB30Pre-collision seat belts
2PTL25Power trunk opener and closer
3RR J/B-B10Smart access system with push-button start
4RR S/HTR20Seat heaters (rear)
5FR S/HTR10Seat heaters/ventilators (front)
6RR FOG10No circuit
7DC/DC-S (HV)7. 5DC/DC converter
8BATT FAN (HV)20Hybrid battery (traction battery) cooling fan
system
9SECURITY7. 5SECURITY
10ECU-B NO.37. 5Pa r k i n g b r a ke
11TRK OPN7. 5Power trunk opener and closer, trunk open
motor
12DCM (HV)7. 5DCM
13AC INV (HV)20Po w e r o u t l e t ( 1 2 0 V AC )
14RR-IG15Radar sensor, Blind Spot Monitor
15RR ECU-IG10
Power trunk opener and closer, parking
brake, tension reducer (rear left-hand), RR
CTRL SW, tire pressure warning system
16EPS-IG5Electric power steering system
17BACK UP7. 5Back-up lights
GS450h_OM_OM30D52U_(U).book Page 708 Monday, July 29, 2013 12:07 PM

737
GS450h_OM_OM30D52U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Calmly 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 necessarily indicate a malfunction in the system. However, if this
continues to occur, have the vehicle inspected by your Lexus dealer.
Stop the vehicle immediately. Continuing to drive the vehicle may
be dangerous.
Warning lightWarning light/Details
(U.S.A.)
(Canada)Brake system warning light (warning buzzer) • Low brake fluid
• Malfunction in the electronically controlled brake system
GS450h_OM_OM30D52U_(U).book Page 737 Monday, July 29, 2013 12:07 PM

7447-2. Steps to take in an emergency
GS450h_OM_OM30D52U_(U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
GS450h_OM_OM30D52U_(U).book Page 744 Monday, July 29, 2013 12:07 PM

7637-2. Steps to take in an emergency
GS450h_OM_OM30D52U_(U)
7
When trouble arises
Indicates that the vehicle
is unable to drive over 65
mph (110 km/h) until the
transmission warms up
Wait until the transmis-
sion warms up.
Indicates that remaining
fuel is approximately 2.6
gal. (10.0 L, 2.2 Imp.gal.)
or less
Refuel the vehicle.
Indicates that the power
switch is turned off or
turned to ACCESSORY
mode and the driver’s
door is opened while the
lights are turned on
Turn the lights off.
Indicates that the driver’s
door was opened with the
shift position in any posi-
tion other than P
Shift the shift position to P.
Warning messageDetailsCorrection procedure
(If equipped)
(Flashes)
(Flashes)
GS450h_OM_OM30D52U_(U).book Page 763 Monday, July 29, 2013 12:07 PM

869Alphabetical index
GS450h_OM_OM30D52U_(U)
Approach warningDynamic radar cruise control......246
Dynamic radar cruise control with full-speed range .................... 262
Armrest .................................................... 620
Ashtrays....................................................... 611
Assist grips .............................................. 625
Audio input................................................521
Audio system............................................. 411 Audio input............................................. 521
AUX port/USB port...........................521, 501, 511
Bluetooth
® audio.............................. 489
CD/DVD player ................................ 457
CD/DVD player information ...... 477
DVD video ........................................... 465
iPod .......................................................... 509
MP3/WMA disc .............................. 459
Optimal use ........................................... 519
Portable music player ....................... 521
Radio ........................................................434
Rear seat audio controls ................523
Steering wheel audio switch ........ 527
USB memory ...................................... 499
Automatic headlight leveling system .................................................... 220
Automatic light control system......... 217
AUX port...................................................521
Auxiliary boxes ...................................... 606
AVS (Adaptive Variable Suspension system)..........................309 Back-up lights
Replacing light bulbs ........................722
Wattage ...................................................817
Battery (12-volt battery) .....................673 If the 12-volt battery is
discharged......................................... 796
Preparing and checking before
winter.................................................... 342
Warning light ....................................... 738
Battery (traction battery) ...................... 76
Blind Spot Monitor (BSM) ................324
Bluetooth®
Audio system .......................................489
Hands-free system (for cellular phone) .......................530
Brake Brake Hold ............................................. 214
Fluid ............................................................ 671
Parking brake ..........................................211
Regenerative braking ..........................74
Warning light ........................... 737, 740
Warning message..............................747
Brake assist ............................................. 308
Brake Hold................................................ 214
Break-in tips ............................................. 177
Brightness control Instrument panel light control ........ 93
BSM (Blind Spot Monitor) ................324 Blind Spot Monitor function......... 328
Rear Cross Traffic Alert function.................................................. 331
B
GS450h_OM_OM30D52U_(U).book Page 869 Monday, July 29, 2013 12:07 PM

871Alphabetical index
GS450h_OM_OM30D52U_(U)
Cooling system ..................................... 668Engine overheating..........................800
Hybrid system overheating .........800
Cruise control
Cruise control...................................... 236
Dynamic radar cruise control......240
Dynamic radar cruise control with full-speed range ................... 255
Cup holders ............................................ 604
Curtain shield airbags ........................... 39
Customizable features .......................833
Daytime running light system .......... 220
Defogger Front windshield ................................ 395
Outside rear view mirrors ............ 409
Rear window ....................................... 409
Differential................................................ 815
Dimensions ............................................ 808
Dinghy towing..........................................192
Display Dynamic radar cruise control......240
Lexus night view ................................ 335
LKA (Lane-Keeping Assist) ......... 275
Multi-information display ..................96
Remote Touch screen .....................352
Trip information ..................................... 97
Warning message ............................. 747
Do-it-yourself maintenance ............. 657
Door courtesy lights Location ..................................................597
Wattage ................................................... 817 Door lock
Doors.........................................................139
Smart access system with push-button start .............................. 123
Wireless remote control..................136
Doors .......................................................... 139
Automatic door locking and unlocking system ......................141
Door glasses .......................................... 167
Door lock.................................................139
Open door warning buzzer .......... 127
Open door warning light .............. 740
Outside rear view mirrors ..............164
Rear door child-protector ..............140
Driver’s seat position memory.......... 152 Driving position memory.................153
Memory recall function ................... 155
Power easy access system ............. 152
Driving ........................................................ 176 Break-in tips ........................................... 177
Correct driving posture .................... 30
Driving mode select switch ..........305
Hybrid vehicle driving tips ............340
Procedures ............................................. 176
Winter drive tips ................................ 342
DVD player ................................. 457, 465
Dynamic radar cruise control ......... 240 Function .................................................. 240
Warning message................. 749, 760
Dynamic radar cruise control with
full-speed rangeFunction .................................................. 255
Warning message................. 749, 760
D
GS450h_OM_OM30D52U_(U).book Page 871 Monday, July 29, 2013 12:07 PM