sensor Lexus GS350 2011 Service Manual

493
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
GS350
FuseAmpereCircuit
1ECU-B10VGRS, EPS, driver’s seat switch
module
2ABS MAIN325Electronically controlled
brake system
3TURN-HAZ15Turn signal lights, emergency flashers
4IG2 MAIN20IG2, GAUGE and IGN
5RAD NO.230Audio system
6D/C CUT20DOME and MPX-B
7RAD NO.130Audio system
8MPX-B10
Multiplex communication system,
front controller, door control system
(power door lock system, door cour-
tesy lights, power windows, power
rear view mirror control system, out-
side rear view mirror heaters), power
seat system, steering sensors, elec-
tronically controlled brake system, tilt
and telescopic steering wheel,
gauges and meters, combination
switch

501
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
FuseAmpereCircuit
7PA N E L7. 5
Steering switch illumination, audio
system, glove box light, automatic
transmission selector lever illumina-
tion, console box light, adaptive vari-
able suspension switch illumination,
cigarette lighter illumination, air con-
ditioning system, VSC OFF switch
illumination, driving pattern selector
switch, seat heater or heated and
ventilated seat switches, register ILL
RH, register ILL LH, fuel filler door
and trunk lid opener switch illumina-
tion, D-SW module
8FUEL OPN10Fuel filler door opener, trunk lid
opener
9ECU-IG LH10
VDIM, electronically controlled
brake system, yaw rate and G sensor,
steering sensor, cruise control sys-
tem, dynamic radar cruise control
system, EPS, VGRS, rear view moni-
tor system, four-wheel drive system,
front controller, moon roof, rain sen-
sor
10FR S/HTR LH15Seat heaters and ventilators
11RR DOOR LH20
Rear left door control system (power
door lock system, door courtesy light,
power window)

502
4-3. Do-it-yourself maintenance
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
FuseAmpereCircuit
12FR DOOR LH20
Front left door control system (power
door lock system, power rear view
mirror control system, door courtesy
light, outside rear view mirror heater,
power window)
13RAD NO.310Audio system
14H-LP LVL7. 5AFS, automatic headlight leveling
control system
15LH-IG10
Charging system, headlight cleaners,
exhaust gas sensor, rear window
defogger, electric cooling fans, rear
left door control system, front left
door control system, emergency
flashers, automatic transmission, seat
belt pretensioners, Intuitive parking
assist, power window
16FR WIP30Windshield wipers and washer

532
5-1. Essential information
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Event data recorder
In a crash or a near car crash eventThe SRS airbag sensor assembly contains the EDR. In a crash or a near
car crash event, this device may record some or all of the following infor-
mation:
● Engine speed
● Whether the brake pedal was applied or not
● Ve h i c l e s p e e d
● To what extent the accelerator pedal was depressed
● Position of the automatic transmission shift lever
● Whether the driver and front passenger wore seat belts or not
● Driver’s seat position
● SRS airbag deployment data
● SRS airbag system diagnostic data
● Front passenger’s occupant classification
Your vehicle has computers that monitor and control certain aspects of
your vehicle. These computers assist in driving and maintaining optimal
vehicle performance.
Besides storing data useful for troubleshooting, there is a system to record
data in a crash or a near car crash event. This is called an Event Data
Recorder (EDR).

538
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after taking several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
■Front passenger detection sensor and passenger seat belt reminder
●If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash, even if a passenger is not sitting in
the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■SRS warning light
This warning light system monitors the following:
●The airbag sensor assembly
●Front airbag sensors
●The curtain shield and rear side airbag sensors
●The side and curtain shield airbag sensors
●The front passenger occupant classification ECU
●“AIR BAG ON” and “AIR BAG OFF” indicator lights
●The pressure sensor
●The belt tension sensor
●The seat belt buckle switches
●The driver’s seat position sensor
●The inflators
●The warning light
●The interconnecting wiring and power sources

546
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Wa r n i n g m e s s a g eDetails
(AWD models)
Malfunction in the AWD system.
(If equipped)
Intuitive parking assist malfunction.The malfunctioning sensor is shown flashing on the
display.
(If equipped)
Malfunction in the active stabilizer suspension sys-
tem.
(If equipped)
Malfunction in the PCS.

548
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Have the vehicle inspected immediately.Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Wa r n i n g m e s s a g eDetails
(GS460)
Malfunction in the VGRS.
(If equipped, steering guide symbol and
arrows are flashing)
The steering sensor cable is broken and signals can-
not be received.

5
When trouble arises
551
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Wa r n i n g m e s s a g eDetailsCorrection procedure
(U.S.A. only)
The engine oil should be
changed.
Check and change the
engine oil.
Comes on approximately
5000 miles (8000 km)
after the engine oil is
changed (and the oil
maintenance data has
been reset).
(If equipped)
Intuitive parking assist is
dirty or covered with ice.Clean the sensor.
(Flashing)
(If equipped)
The PCS is not currently
functional.
• Clean the grille and the sensor.
• This message appears when the pre-collision
system is hot. In this case,
wait until the system
cools down.
(Flashing)
(If equipped)
The radar cruise control
sensor is dirty or covered
with ice.
Clean the sensor.

5
When trouble arises
553
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Other messagesIf the following message is displayed, take appropriate action and confirm
that the message has disappeared.
MessageDetails
(If equipped)
Calibrate the neutral position of the steering wheel.
■Initializing the steering sensor
Use one of the following methods.
●With the vehicle stopped, turn the steering wheel all the way to the left and right.
(The order is not important.)
●Drive for more than 5 minutes on an un-crowded road with as few curves and
corners as possible.
If the steering guide symbol disappears, the steering sensor has been initialized. If
the steering guide symbol does not disappear, have the vehicle checked by your
Lexus dealer.

619
6-2. Customization
6
Vehicle specifications
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
*1: This function cannot be customized unless power window operationusing the wireless remote control is enabled.
*2: Vehicles sold outside Canada
ItemFunctionDefault settingCustomized
setting
Moon roof
(
→P. 7 8 )
Linked door key opera-
tionOpen and closeOpen only
Close only
Linked operation of com-
ponents when door key is
used
Slide onlyTilt only
Wireless remote control
linked operation
*1OFFOpen
Linked operation of com-
ponents when wireless
remote control used
*1OFF
Slide only
Tilt only
Automatic
light control
system
(
→P. 1 5 5 )
Light sensor sensitivityLevel 3Levels 1 to 5
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
0 seconds
60 seconds
90 seconds
Daytime running lightONOFF*2