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What to do if ...
67
List of Warning/Indicator Lights
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
(U.S.A.)
Brake system warning light
(Canada)
Stop the vehicle immediately.
Charging system warning light
Have the vehicle inspected immediately.
(U.S.A.)Malfunction 
indicator lamp
Electric power steering 
system warning light
(Canada)Pre-collision system 
warning light*1
SRS warning light
(Flashing and then continu-ously on)
Tire pressure warning light
(U.S.A.)
“ABS” warning light
(Canada)
Follow the correction procedures.
Open door warning light
(On the center panel)
Front passenger’s seat belt
reminder light
Low fuel level warning light
(Illuminate no flashing)
Tire pressure warning light*2
(On the instru-ment panel)
Driver’s seat belt
reminder light
Master warning light 
For further information, refer to the Owner's Manual.                   
     
        
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104
1-6. Theft deterrent system
nSystem maintenance
The vehicle has a maintenance-free type alarm system.
nItems to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the
following:
lNobody is in the vehicle.
lThe windows and moon roof are closed before the alarm is set.
lNo valuables or other personal items are left in the vehicle.
nTr i g g e r i n g  o f  t h e  a l a r m
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
nAlarm-operated door lock
lWhen the alarm is operating, the doors are locked automatically to prevent
intruders.
lDo not leave the key inside the vehicle when the alarm is operating, and make
sure the key is not inside the vehicle when recharging or replacing the battery.
lA person inside the vehicle opens a door
or the hood.
lThe battery is recharged or replaced when
the vehicle is locked.   
     
        
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474
4-3. Do-it-yourself maintenance
Battery
Check the battery as follows.
nBattery exterior
Make sure that the battery terminals are not corroded and that there
are no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
nBefore recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following before recharging:
lIf recharging with the battery installed on the vehicle, be sure to disconnect the
ground cable.
lMake sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the battery.
nAfter recharging/reconnecting the battery
In some cases, the engine may not start. Follow the procedure below to initialize the
system.
Shift the shift lever to P, and turn the “ENGINE START STOP” switch OFF.
Open and close any of the doors.
Start the engine. (If the engine does not start first time, repeat the proce-
dure.)
If the engine will not start even after multiple attempts at the above method, contact
your Lexus dealer.
STEP1
STEP2
STEP3  
     
        
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476
4-3. Do-it-yourself maintenance
NOTICE
nWhen recharging the battery
Never recharge the battery while the engine is running. Also, be sure all accesso-
ries are turned off. 
     
        
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503
4-3. Do-it-yourself maintenance
4
Maintenance and care
23ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
24RAD NO. 110 AAudio system
25AM27. 5  AStarting system
26ECU-B NO. 27. 5  A
Air conditioning system, front passen-
ger occupant classification system, 
starter system
27MAYDAY/TEL7. 5  AMayday system
28IMMOBI7. 5  A
29ALT-S7. 5  ACharging system
30IGN10 A
Starter system, multiport fuel injection 
system/sequential multiport fuel injec-
tion system
31DOME10 A
Vanity mirror lights, luggage compart-
ment lights, interior lights, personal 
lights
32ECU-B NO. 17. 5  A
Interior lights, personal lights, tilt and 
telescopic steering, multiplex commu-
nication system, meters and gauges, 
power window, driving position mem-
ory system, power seats, power back 
door, head-up display, starter system, 
air conditioning system, power door 
lock system
33EFI NO. 110 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
34WIP-S7. 5  AWindshield wipers and washer
FuseAmpereCircuit 
     
        
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