RAD NO Lexus GS350 2015 Repair Manual

GS350_OM_OM30F69U_(U)
4376-3. Do-it-yourself maintenance
6
Maintenance and care
14MULTIMEDIA10Navigation system, Remote Touch
15RAD NO.130Audio system
16AIR BAG10SRS airbag system, occupant classification
system
17OBD7. 5On-board diagnosis system
18ACC7. 5
Body ECU, DCM, head-up display, RR
CTRL, Remote Touch screen, navigation sys-
tem, clock, transmission
FuseAmpereCircuit
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438
GS350_OM_OM30F69U_(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. 5No circuit
8BATT FAN (HV)20No circuit
9SECURITY7. 5SECURITY
10ECU-B NO.37. 5Pa r k i n g b r a ke
11TRK OPN7. 5Power trunk opener and closer
12DCM (HV)7. 5No circuit
13AC INV (HV)20No circuit
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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4817-2. Steps to take in an emergency
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7
When trouble arises
(If equipped)
Indicates a malfunction in the intuitive parking assistAll assist-sensors flash.
Indicates a malfunction in the dynamic radar cruise
control system (if equipped) or the cruise control sys-
temPress the “ON-OFF” button once to deactivate the
system, and then press the button again to reacti-
vate the system.
(If equipped)
Indicates a malfunction in the LKA (Lane-Keeping
Assist)
(If equipped)
Indicates a malfunction in the LED headlight system
Warning messageDetails
(Flashes)
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4887-2. Steps to take in an emergency
GS350_OM_OM30F69U_(U)
(If equipped)
Indicates that intuitive
parking assist sensor is
dirty or covered with ice
Clean the sensor.
(If equipped)
Indicates that the radar
sensor is dirty or covered
with ice
Clean the sensor.
(If equipped)
Indicates that the radar
cruise control system is
unable to judge vehicle-
to-vehicle distance
•Turn off the snowmode.
• If the windshield wip- ers are on, turn them
off or set them to a
mode other than
AUTO or high speed
wiper operation.
(If equipped)
Indicates that your vehi-
cle is nearing the vehicle
ahead (in vehicle-to-vehi-
cle distance mode)At the same time,
will appear on
the head-up display
(the image flashes).
Slow the vehicle by
applying the brakes.
Warning messageDetailsCorrection procedure
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4917-2. Steps to take in an emergency
GS350_OM_OM30F69U_(U)
7
When trouble arises
■Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LKA (Lane-Keeping Assist) lane departure warning function (if equipped)
In the following cases, the warning message will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LKA system
functions
●When the lane lines cannot be recognized
●When the steering wheel is turned as far as necessary to cause the vehicle to
change lanes
■Open door warning message
The open door warning message continues to display until a door or the trunk is fully
closed, even if the engine switch is turned off. However, approximately 20 minutes
after a door or the trunk is not fully closed, the battery-saving function operates and
the display turns off even though a door or the trunk is not fully closed.
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4937-2. Steps to take in an emergency
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7
When trouble arises
Warning messageDetailsCorrection procedure
(If equipped)
Indicates that the tire
inflation pressure is lowCheck the tire inflation
pressure, and adjust to
the appropriate level.
(If equipped)
Indicates a malfunction in
the tire pressure warning
system
Stop the vehicle in a safe
place and turn the engine
switch off then on again.If the tire pressure
warning indicator
flashes for 1 minute
then illuminates, there
is a malfunction in the
system. Have the vehi-
cle inspected at your
Lexus dealer.
(If equipped)
Indicates that the tire
position information can-
not be recognized
Drive for a short while
and check if the display
updates.If the radio wave condi-
tions improve, the dis-
play may return to
normal. If the tire pres-
sure is still not dis-
played after driving for
several minutes, stop
the vehicle in a safe
place, turn the engine
switch off then on
again, and start driving.
If the tire pressure is still
not displayed even
after repeating this sev-
eral times, have the
vehicle inspected at
your Lexus dealer.
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5137-2. Steps to take in an emergency
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7
When trouble arises
CAUTION
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically designed for use
with your vehicle. Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tire simultaneously.
●Replace the compact spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting opera-
tions that cause sudden engine braking.
■When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may
not operate correctly:
Also, not only can the following system not be utilized fully, but it may even nega-
tively affect the drive-train components:
•AWD system
• ABS & Brake assist
•VSC
•TRAC
•Cruise control
• Dynamic radar cruise control (if equipped)
• PCS (if equipped)
•EPS
• AFS (if equipped)
• LDH (if equipped) • DRS (if equipped)
• AVS (if equipped)
• LKA (Lane-Keeping Assist)
(if equipped)
• VGRS (if equipped)
• Lexus parking assist monitor
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
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5247-2. Steps to take in an emergency
GS350_OM_OM30F69U_(U)Start the engine of the second ve
hicle. Increase the engine speed
slightly and maintain at that level for approximately 5 minutes to
recharge the battery of your vehicle.
Open and close any of the doors of your vehicle with the engine switch
off.
Maintain the engine speed of the second vehicle and start the engine of
your vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle’s engine has started, remove the jumper cables in the
exact reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at your Lexus dealer as
soon as possible.
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle is
not in use, due to natural discharge and the draining effects of certain electrical
appliances. If the vehicle is left for a long time, the battery may discharge, and the
engine may be unable to start. (The battery recharges automatically during driving.)
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5
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527
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7
When trouble arises
7-2. Steps to take in an emergency
If your vehicle overheats
Stop the vehicle in a safe place and turn off the air conditioning system,
and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down sufficiently, inspect the hoses and
radiator core (radiator) for any leaks. Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
The following may indicate that your vehicle is overheating.
●The needle of the engine coolant temperature gauge ( →P. 81) enters
the red zone or a loss of engine power is experienced. (For example,
the vehicle speed does not increase.)
●Steam is coming from under the hood.
Correction procedures
1
2
3
1
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5287-2. Steps to take in an emergency
GS350_OM_OM30F69U_(U)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.
Water can be used in an emergency if
coolant is unavailable.
Start the engine 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 system on and off
repeatedly. (The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
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