battery Lexus IS300h 2016 Repair Manual

4897-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53D56E)
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
■Use a CR2032 lithium battery
●Batteries can be purchased at any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional, local electrical appliance shops or camera stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart entry & start system and wireless remote control will not function properly.
●The operational range will be reduced.
■Certification for the key battery
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to the local laws.
4

4907-3. Do-it-yourself maintenance
IS300h_EE(OM53D56E)
CAUTION
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep away
from children. Failure to do so could result in death or serious injury.
■Lithium battery precautions
CAUTION:
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote control.
●Do not bend either of the battery terminals.

511
8When trouble arises
IS300h_EE(OM53D56E)
8-1. Essential informationEmergency flashers.................... 512
If your vehicle has to be stopped in an
emergency .................................. 513 8-2. Steps to take in an
emergency
If your vehicle needs to be towed .......................................514
If you think something is wrong ........................................... 520
If a warning light turns on or a warning buzzer
sounds............................................521
If a warning message is displayed......................................527
If you have a flat tire (vehicles with
emergency tire puncture
repair kit) .................................... 545
If you have a flat tire (vehicles with run-flat
tires).............................................. 559
If the hybrid system will not start ...............................560
If the shift lever cannot be shifted from P ..................... 562
If the electronic key does not operate properly ............. 563
If the 12-volt battery is discharged ................................. 566
If your vehicle overheats ...........571
If the vehicle becomes stuck ......................... 575

512
IS300h_EE(OM53D56E)8-1. Essential information
Press the switch.
All the turn signals will flash.
To turn them off, press the switch once
again.
■Emergency flashers
If the emergency flashers are used for a long time while the hybrid system is not operat-
ing (while the “READY” indicator is not illu
minated), the 12-volt battery may discharge.
Emergency flashers
The emergency flashers are used to warn other drivers when the vehicle has
to be stopped in the road due to a breakdown, etc.

5248-2. Steps to take in an emergency
IS300h_EE(OM53D56E)*
1: Parking brake engaged warning buzzer:
→ P. 5 3 1
*2: Open door warning buzzer:
→ P. 5 2 9
*3: Seat belt warning buzzer:
The seat belt warning buzzer sounds to alert the driver, front passenger and rear pas-
sengers that his or her seat belt is not fastened. The buzzer sounds for 30 seconds
after the vehicle reaches a speed of 20 km/h (12 mph). Then, if the seat belt is still
unfastened, the buzzer will sound in a different tone for 90 more seconds.
■Passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on a passenger seat, the passenger detection sensor may cause the
warning light to flash and the warning buzzer to sound 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 warn-
ing light may not operate properly.
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes completely empty.
If the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp
will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as possible.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insu fficient or the voltage temporarily drops,
the electric power steering system warning light may come on and the warning buzzer
may sound.
■When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even after several minutes, check that the tire infla-
tion pressure is at the specifie d level and carry out initialization.
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■Conditions that the tire pressure warning system may not function properly
→ P. 4 7 1

5308-2. Steps to take in an emergency
IS300h_EE(OM53D56E)
(If equipped)
Indicates a malfunction in the Lexus parking assists-sen-
sor
The assist-sensors flash.
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
(If equipped)
Indicates that a Lexus parking assist-sensor is dirty or
covered with ice
A buzzer also sounds.
→ Clean the sensor.
Indicates that the accelerator pedal is depressed while
the shift position is in N
A buzzer also sounds.
→ Release the accelerator pedal and shift the shift
lever to D, S or R.
Indicates that the accelerator pedal is depressed to stop
the vehicle on an upward slope, etc.
A buzzer also sounds.
→ Release the accelerator pedal and depress the
brake pedal.
Indicates that the hybrid battery (traction battery) power
has dropped because a long period of time has elapsed
after shifting the shift lever to N
A buzzer also sounds.
→ Restart the hybrid system when starting the vehicle.
Indicates a malfunction in the hybrid system
A buzzer also sounds.
→ Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5318-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D56E)
Indicates that the hybrid battery (traction battery) is lowA buzzer also sounds.
→ When stopping the vehicle for a long period of time,
shift the shift lever to P. The hybrid battery (traction
battery) cannot be charged with the shift lever in N.
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the vehicle is being driven at 5 km/h (3
mph) or more with the parking brake still engaged
A buzzer also sounds.
→ Release the parking brake.
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates a malfunction in:
•The ABS; or
• The brake assist system
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the engine coolant temperature is too high
A buzzer also sounds.
→ P. 5 7 1
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)

5358-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D56E)
Indicates a malfunction in the brake override systemA buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that engine oil level is low
A buzzer also sounds.
→ Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated
This message may be displayed when driving under
severe operating conditions. (For example, when driv-
ing up a long steep hill.)
A buzzer also sounds.
→ Stop and check. ( →P. 5 7 1 )
Indicates a malfunction in:
• The automatic headlight leveling system; or
• The Automatic High Beam system (if equipped)
• The LED headlight system (if equipped)
A buzzer also sounds.
→ Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and
equipped professional.
Indicates that the accelerator and brake pedal are being
depressed simultaneously
→Release the accelerator or brake pedal.
Maintenance of the hybrid battery (traction battery)
cooling component is required
The filter may be clogged, the air intake vent may be
blocked or there may be a gap in the duct
→ Have maintenance performed on the hybrid battery
(traction battery) cooling component by any autho-
rized Lexus dealer or repairer, or another duly qual-
ified and equipped professional.
Indicates that the washer fluid level is low
→Add washer fluid.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

5378-2. Steps to take in an emergency
8
When trouble arises
IS300h_EE(OM53D56E)
Indicates that operation of large electricity consuming
systems such as the air conditioning system are sus-
pended
→ Stop using unnecessary electric components to
reduce electricity consumpt ion. Wait a while until
the electric power supply is restored.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system
cannot be used because the vehicle speed is lower than
approximately 50 km/h (32 mph)
→ Drive the vehicle at 50 km/h (32 mph) or higher.
Indicates that the EV drive mode is not available*
The reason the EV drive mode is not available (the
vehicle is idling, hybrid battery [traction battery]
charge is low, speed is higher than the EV drive mode
operating speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.
→ Use the EV drive mode when it becomes available.
Wa r n i n g m e s s a g eDetails/Actions

5388-2. Steps to take in an emergency
IS300h_EE(OM53D56E)
*: For the EV drive mode operating conditions: →P. 2 1 7
Indicates that the EV drive mode has been automatically
canceled
*
The reason the EV drive mode is not available (the
hybrid battery [traction battery] charge is low, speed is
higher than the EV drive mode operating speed
range, accelerator pedal is depressed too much) may
be displayed.
A buzzer also sounds.
→ Drive the vehicle for a while.
Wa r n i n g m e s s a g eDetails/Actions
(Except F
SPORT models) (F SPORT
models)
(Flashes) (Flashes)