warning lights Lexus GS450h 2015 Opening, closing and locking the doors and trunk / LEXUS 2015 GS450H FROM MAR. 2015 PROD. (OM30F70U) User Guide

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Instrument cluster2
2. Instrument cluster Warning lights and indicators .............................. 86
Gauges and meters ...................... 91
Multi-information display .......... 96
Head-up display .......................... 104
Energy monitor/ consumption screen .................. 111

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2. Instrument cluster
Warning lights and indicators
◆Instrument cluster
The units used on the speedometer and some indicators may differ depending on
the target region.
◆Center panel
The warning lights and indicators on the instrument cluster, center
panel and outside rear view mirrors inform the driver of the status of
the vehicle’s various systems.
For the purpose of explanation, the following illustration displays all
warning lights and indicators illuminated.

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872. Instrument cluster
2
Instrument cluster
◆Outside rear view mirrors (vehicles with BSM)
Warning lights inform the driver of ma lfunctions in the indicated vehicle’s
systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
(  P. 5 0 3 )*1
(U.S.A.)
ABS warning light
( P. 5 0 4 )
*1
(Canada)
Brake system warning light
( P. 5 0 3 )*1
(Canada)
ABS warning light
( P. 5 0 4 )
*1Charging system warning
light ( P. 5 0 4 )*1Electric power steering
system warning light
( P. 5 0 4 )
*1
(U.S.A.)
Malfunction indicator
lamp ( P. 5 0 4 )*1, 2
(if equipped)
“AFS OFF” indicator
( P. 505)
*1
(Canada)
Malfunction indicator
lamp ( P. 5 0 4 )*1, 2Brake hold operated
indicator ( P. 505)
*1SRS warning light
( P. 5 0 4 )*2
(U.S.A.)
Parking brake indicator
( P. 505)

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2. Instrument cluster
*1: These lights turn on when the power switch is turned to ON mode to indicate that
a system check is being performed. They will turn off after the hybrid system is on,
or after a few seconds. There may be a ma lfunction in a system if the lights do not
come on, or turn off. Have the vehicle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
*2
(Canada)
Parking brake indicator
(  P. 505)*1Master warning light
( P. 5 0 6 )
*1
Brake system warning light
( P. 5 0 6 )*1, 2
(if equipped)
“PCS” warning light
( P. 504, 515)
Open door warning light
( P. 5 0 6 )*1
Slip indicator ( P. 505)
Low fuel level warning light
( P. 5 0 6 )*1Tire pressure warning light
( P. 5 0 7 )
Seat belt reminder light
( P. 5 0 6 )

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2. Instrument cluster
*1: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’SMANUAL”.
*2: These lights turn on when the power switch is turned to ON mode to indicate that
a system check is being performed. They will turn off after the hybrid system is on,
or after a few seconds. There may be a ma lfunction in a system if the lights do not
come on, or turn off. Have the vehicle inspected by your Lexus dealer.
*3: The light flashes to indicate that the system is operating.
*4: The light comes on when the system is turned off. The light flashes faster than
usual to indicate that the system is operating.
*5: In order to confirm operation, the BSM ou tside rear view mirror indicators illumi-
nate in the following situations:
• When the power switch is turned to ON mode while the BSM main switch is set
to ON.
• When the BSM main switch is set to ON while the power switch is in ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indicators
will turn off after a few seconds.
If the BSM outside rear view mirror indicato rs do not illuminate or do not turn off,
there may be a malfunction with the system.
If this occurs, have the vehicle inspected by your Lexus dealer.
*5
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( P. 300)*2“A I R B A G O N /
OFF” indicator
( P. 4 9 )
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not come on
when you start the hybrid system, this co uld mean that these systems are not avail-
able to help protect you in an accident, wh ich could result in death or serious injury.
Have the vehicle inspected by your Lexus dealer immediately if this occurs.

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2134-2. Driving procedures
4
Driving
■When there is a malfunction in the system
Warning lights and/or warning message will turn on or flash. (P. 505, 518)
Depending on the condition, the parking brake indicator light may flash.
■Usage in winter time
 P. 3 1 9
NOTICE
■When parking the vehicle
Before you leave the vehicle, set the parking brake, shift the shift lever to P and
make sure that the vehicle does not move.
■When the system malfunctions
Stop the vehicle in a safe place and check the warning messages.
■When the parking brake cannot be released due to a malfunction
Use the parking brake release tool to manually release the parking brake.
( P. 5 5 7 )
Driving the vehicle with the parking brake set will lead to brake components over-
heating, which may affect braking performance and increase brake wear.

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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. 211)
■When there is a malfunction in the system
Warning lights and/or warning mess ages will turn on or flash. (P. 505, 517)
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 th e 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 wh en 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.

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4-5. Using the driving support systems
■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 pa rtially 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-a nd-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

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6-3. Do-it-yourself maintenance
■Trunk
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. 5Parking brake
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, Remote Touch screen

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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. Cont inuing 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