2015 LEXUS RX350 warning

6924-3. Do-it-yourself maintenance
NOTICE■
Repairing or replacing tires, wheels, ti re pressure warning valves, transmitters
and tire valve caps ●
When removing or fitting the wheels, tires or the tire pressure warning valves and
transmitter, contact your Lexus dealer as the tire pressure warning valves and
transmitters may be damage d if not handled correctly.●
When replacing tire valve caps, do not us e tire valve caps other than those speci-
fied. The cap may become stuck.■
To avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid seal ants, the tire pressure warning valve and
transmitter may not operate properly. If a liquid sealant is used, contact your Lexus
dealer or other qualified service shop as so on as possible. Make sure to replace the
tire pressure warning valve and transmitter when replacing the tire. (  P. 685)■
Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause losses in tire inflation pressure, reducing the cushion-
ing ability of the tires. In addition, driv ing on rough roads may cause damage to the
tires themselves, as well as the vehicle’s wheels and body.■
If tire inflation pressure of each tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

6974-3. Do-it-yourself maintenance
4
Maintenance and care Wheels
■
When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and
transmitters that allow the tire pressure warning system to provide advanced warn-
ing in the event of a loss in tire inflation pressure. Whenever wheels are replaced,
tire pressure warning valves and transmitters must be installed. (  P. 6 8 5 )If a wheel is bent, cracked or heavily corroded, it should be replaced.
Otherwise, the tire may separate from the wheel or cause a loss of han-
dling control.
■ Wheel selection
When replacing wheels, care should be taken to ensure that they
are equivalent to those removed in load capaci ty, diameter, rim
width, and inset*.
Replacement wheels are available at your Lexus dealer. *: Conventionally referred to as “offset”.
Lexus does not recommen d using the following:
● Wheels of different sizes or types
● Used wheels
● Bent wheels that have been straightened
■ Aluminum wheel precautions
● Use only Lexus wheel nuts and wrenches designed for use with
your aluminum wheels.
● When rotating, repairing or changi ng your tires, check that the
wheel nuts are still tight after driving 1000 miles (1600 km).
● Be careful not to damage the aluminum wheels when using tire
chains.
● Use only Lexus genuine balance weights or equivalent and a
plastic or rubber hammer when balancing your wheels.

6984-3. Do-it-yourself maintenance
CAUTION■
When replacing wheels ●
Do not use wheels that are a different size from those recommended in the
Owner’s Manual, as this may result in loss of handling control.●
Never use an inner tube in a leaking wheel which is designed for a tubeless tire.
Doing so may result in an accident , causing death or serious injury.
NOTICE■
Replacing tire pressure warning valves and transmitters ●
Because tire repair or replacement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by your Lexus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitters at your Lexus dealer.●
Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-
genuine wheels.

7124-3. Do-it-yourself maintenance
7
ECU-IG1 NO. 1 10 A Multiplex communication system,
steering sensor, shift lock control sys-
tem, tilt and telescopic steering, auto-
matic transmission system, power
back door, pre-collision system, vehi-
cle stability control system, tire pres-
sure warning system8
S/ROOF 30 A Moon roof9
FUEL OPN 7. 5 A Fuel filler door opener10
PSB 30 A Pre-collision seat belt11
TI & TE 30 A Tilt and telescopic steering system12
DR LOCK 10 A13
FR FOG 7. 5 A Front fog lights14
P-S E AT L H 30 A Po w e r s e a t ( l e f t - s i d e )15
4WD 7. 5 A AW D s y s t e m16
INVERTER 20 A Po w e r o u t l e t17
RR FOG 7. 5 A18
D/L ALT B 25 A Multiplex communication system,
power door lock system, power back
door19
EPS 10 A Electric power steering system20
ECU-IG1 NO. 2 10 A Intuitive parking assist, AWD system,
pre-collision seat beltFuse Ampere Circuit

When trouble arises
5
7335-1. Essential information
Emergency flashers............... 734
If your vehicle needs to be
towed ...................................... 735
If you think something is
wrong ....................................... 742
Fuel pump shut off system.... 743 5-2. Steps to take in an
emergency
If a warning light turns
on or a warning buzzer
sounds... .................................. 744
If a warning message is
displayed................................ 754
If you have a flat tire................ 774
If the engine will not start .... 789
If the shift lever cannot be
shifted from P ......................... 791
If you lose your keys .............. 792
If the electronic key does
not operate properly.......... 793
If the vehicle battery is
discharged ............................. 796
If your vehicle overheats ..... 799
If the vehicle becomes
stuck........................................ 802
If your vehicle has to
be stopped in an
emergency ............................ 804

7445-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning in dicates a possible problem in the brake system.
Immediately stop the vehi cle in a safe place and contact your Lexus
dealer.
* : Parking brake engaged warning buzzer
 P. 7 5 9
Stop the vehicle immediately.
The following warning indicates the po ssibility of damage to the vehicle
that may lead to an ac cident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer. Warning light Warning light/Details
(U.S.A.)

(Canada) Brake system warning light (warning buzzer)
*•Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Warning light Warning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging systemCalmly perform the following actions if any of the warning lights comes on
or flashes. If a light comes on or flashes, but then goes off, this does not nec-
essarily indicate a malfunction in the system.

5
When trouble arises
7455-2. Steps to take in an emergency
Have the vehicle inspected immediately.
Failing 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. Warning light Warning light/Details
(U.S.A.)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
•The ABS; or
• The brake assist system
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steering)
system

7465-2. Steps to take in an emergency
(Flashes) Pre-collision system warning light (if equipped)
Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the sys-
tem is not malfunctioning:
• The light will flash quickly wh en the system is operating.
(  P. 2 7 8 )
• The light will turn on when the pre-collision braking is dis-
abled. (  P. 2 7 9 )
• The light will turn on when the system cannot temporarily
be used. (  P. 7 5 9 )
Slip indicator
Indicates a malfunction in:
• The VSC system;
•The TRAC system; or
• The hill-start assist control systemWarning light Warning light/Details