2016 LEXUS NX300H warning light
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Maintenance and care
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Your vehicle is equipped with a tire pressure warning system that uses tire pres-
sure warning valves and transmitters to detect low tire inflation pressure before
serious problems arise.
●If the tire pressure drops below a predetermined level, the driver is warned by
a warning light. ( P. 5 6 7 )
◆Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves and transmitters
must also be installed.
When new tire pressure warning valves and transmitters are installed, new ID
codes must be registered in the tire pressure warning computer and the tire
pressure warning system must be initialized. Have tire pressure warning valve
and transmitter ID codes registered by your Lexus dealer. ( P. 5 1 9 )
◆Initializing the tire pressure warning system
■The tire pressure warning system must be initialized in the following circum-
stances:
●When adjusting the tire inflation pressure
●When the tire inflation pressure is changed such as when changing travel-
ing speed.
●When rotating the tires
●When changing the tire.
When the tire pressure warning system is initialized, the current tire inflation
pressure is set as the benchmark pressure.
Tire pressure warning system
●The tire pressure detected by the tire
pressure warning system can be dis-
played on the multi-information display.
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A message and an indicator are
displayed by the multi-informa-
tion display, and initialization is
completed.
◆Registering ID codes
The tire pressure warning valve and transmitter is equipped with a unique ID
code. When replacing a tire pressure warning valve and transmitter, it is nec-
essary to register the ID code. Have the ID code registered by your Lexus
dealer.
■When to replace your vehicle’s tires
Tires should be replaced if:
●The treadwear indicators are showing on a tire.
●You have tire damage such as cuts, splits, cracks deep enough to expose the fabric, and
bulges indicating internal damage.
●A tire goes flat repeatedly or cannot be properly repaired due to the size or location of
a cut or other damage.
If you are not sure, consult with your Lexus dealer.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered, the tire
pressure warning system will not work proper ly. After driving for about 20 minutes, the
tire pressure warning light blinks for 1 minute and stays on to indicate a system malfunc-
tion.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even if it has seldom
or never been used or damage is not obvious.
■Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation pressure checks.
Make sure to check tire inflation pressure as part of your routine of daily vehicle checks.
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■Situations in which the tire pressure warning system may not operate properly
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheelhousings.
• If the tire inflation pressure is extremely higher than the specified level.
• If wheel without the tire pressure warning valve and transmitter is used.
• If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air- port or other facility th at generates strong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless
communication device
●When the vehicle is parked, the time taken for the warning to start or go off could be
extended.
●When tire inflation pressure declines rapidly for example when a tire has burst, the
warning may not function.
■The initialization operation
●Make sure to carry out initialization af ter adjusting the tire inflation pressure.
Also, make sure the tires are cold before carry ing out initialization or tire inflation pres-
sure adjustment.
●If you have accidentally turned the power swit ch off during initialization, it is not neces-
sary to press the reset switch again as init ialization will restart automatically when the
power switch has been turned to ON mode for the next time.
●If you accidentally press the reset switch when initialization is not necessary, adjust the
tire inflation pressure to the specified level when the tires are co ld, and conduct initial-
ization again.
■Warning performance of the tire pressure warning system
The warning of the tire pressure warning syst em will change in accordance with the con-
ditions under which it was initialized. For this reason, the system may give a warning even
if the tire pressure does not reach a low enough level, or if the pressure is higher than the
pressure that was adjusted to when the system was initialized.
■When initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases, the set-
tings have not been recorded and the system will not operate properly. If repeated
attempts to record tire inflation pressure settings are unsuccessful, have the vehicle
inspected by your Lexus dealer.
●When operating the tire pressure warning reset switch, the tire pressure warning light
does not blink 3 times.
●After carrying out the initializ ation procedure, the tire pressure warning light blinks for
1 minute then stays on after driving for 20 minutes.
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WA R N I N G
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train as well as dangerous han-
dling characteristics, which may lead to an accident resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
●Vehicles with a compact spare tire: Do not tow if your vehicle has a compact spare
tire installed.
■When initializing the tire pressure warning system
Do not initializing tire inflation pressure wi thout first adjusting the tire inflation pressure
to the specified level. Otherwise, the tire pressure warning light may not come on even
if the tire inflation pressure is low, or it may come on when the tire inflation pressure is
actually normal.
■Caution regarding interference with electronic devices
●Users of any electrical medical device other than implantable cardiac pacemakers,
cardiac resynchronization therapy-pacemakers or implantable cardioverter defibril-
lators should consult the ma nufacturer of the device for information about its opera-
tion under the influence of radio waves.
Radio waves could have unexpected effe cts on the operation of such medical
devices.
●People with implantable cardiac pacemakers,
cardiac resynchronization therapypacemak-
ers or implantable cardioverter defibrillators
should not come within 17.7 in. (450 mm) of
the tire pressure warning system initiators.
The radio waves may affect the operation of
such devices.
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8When trouble arises
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8-1. Essential informationEmergency flashers .................. 556
If your vehicle has to be stopped in an
emergency................................. 557
8-2. Steps to take in an emergency If your vehicle needs to be towed .....................................558
If you think something is wrong ........................................... 564
If a warning light turns on or a warning buzzer
sounds.......................................... 565
If a warning message is displayed..................................... 572
If you have a flat tire................... 575
If the hybrid system will not start .............................................. 588
If the shift lever cannot be shifted from P............................590
If the electronic key does not operate properly ...................... 591
If the 12-volt battery is discharged ................................. 594
If your vehicle overheats ......... 599
If the vehicle becomes stuck ............................................. 603
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When trouble arises
8-2. Steps to take in an emergency
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If a warning light turns on or a warning buzzer
sounds
Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu t then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1Low engine oil pressure warning light (warning buzzer)
Indicates that the engine oil pressure is too low
Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1High coolant temperature warning light (warning buzzer)
Indicates that the engine is overheating
Immediately stop the vehicle in a safe place. Continuing to drive
the vehicle may be dangerous.
Handling method ( P. 5 9 9 )
Brake system warning light
Indicates a malfunction in:
• The regenerative braking system;
• The electronically controlled brake system; or
• The electric parking brake
Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system;
• The electronic throttle control system; or
• The emission control system
Have the vehicle inspected by your Lexus dealer immediately.
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SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
Have the vehicle inspected by your Lexus dealer immediately.
Electric power steering system warning light (warning buzzer)
Indicates a malfunction in the EP S (Electric Power Steering) sys-
tem
Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(If equipped)
PCS warning light
Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will come on when the TRAC and VSC systems are turned off. ( P. 3 0 7 )
• The light will come on when the pre-collision system is turned off.
( P. 311)
• The light will flash when the sy stem cannot temporarily be used.
Have the vehicle inspected by your Lexus dealer immediately.
Slip indicator light
Indicates a malfunction in:
• The VSC system;
•The TRAC system; or
• The hill-start assist control system
The light will flash when the ABS, VSC or TRAC system is operat-
ing.
Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
Brake hold operated indicator
Indicates a malfunction in the brake hold system
Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(U.S.A.)
(Flashes)
(Canada)
Parking brake indicator It is possible that the parking br ake is not fully engaged or released
Operate the parking brake switch once again.
This light comes on when the park ing brake is not released. If the
light turns off after the parking brake is fully released, the system is
operating normally.
Warning lightWarning light/Details/Actions
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Low fuel level warning lightIndicates that remaining fuel is approximately 2.2 gal. (8.4 L,
1.8 Imp.gal.) or less
Refuel the vehicle.
Driver's and front passenger's seat belt reminder light (warning
buzzer)
*2
Warns the driver and/or front passenger to fasten their seat belts
Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s
seat belt also needs to be fa stened to make the warning light
(warning buzzer) turn off.
Master warning light A buzzer sounds and the warning light comes on and flashes to
indicate that the master warning system has detected a malfunc-
tion.
P. 5 7 2
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 5 6 9 )
•Flat tire ( P. 5 7 5 )
Adjust the tire inflation pressure to the specified level.
The light will turn off after a fe w minutes. In case the light does
not turn off even if the tire inflation pressure is adjusted, have the
system checked by your Lexus dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pr essure warning system (P. 5 6 9 )
Have the system checked by your Lexus dealer.
*1
Brake Override System/Drive-Start Control warning light
Indicates that:
• The Brake Override System is operating;
• The Brake Override System is malfunctioning (with warning
buzzer);
• The Drive-Start Control is operating (with warning buzzer); or
• The Drive-Start Control is malfunctioning (with warning buzzer)
Follow the instruction that are displayed on the multi-informa-
tion display.
Warning lightWarning light/Details/Actions