
841-3. Theft deterrent system
RX350/RX200t_EE_OM48F32E
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing.
●Nobody is in the vehicle.
●The windows and moon roof or panoramic m oon roof are closed before the alarm is
set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations: (Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, depending on the situation, the door may automatically lock to prevent improper entry into the vehicle:
●When a person remain ing in the vehicle unlocks the door and the alarm is activated.
●While the alarm is activated, a person remaining in the vehicle unlocks the door.
●When recharging or replacing the battery
●The doors are unlocked using the mechanical key.
●A person inside the vehicle opens a door orhood, or unlocks the vehicle.
●The battery is recharged or replaced when the
vehicle is locked. ( P. 716)

912. Instrument cluster
2
Instrument cluster
RX350/RX200t_EE_OM48F32E
Warning lights inform the driver of malfunctions in any of the vehicle’s systems.
Warning lights
*1Brake system warning light
( P. 666)
(if equipped)
LKA indicator ( P. 667)
*1
Brake system warning light
( P. 666)*1
Slip indicator ( P. 668)
*1
(if equipped)
Charging system warning
light ( P. 666)
*1, 3
(if equipped)
PCS warning light
( P. 668)
*1
Malfunction indicator lamp
( P. 666)
*1, 3
(if equipped)
ICS OFF indicator
( P. 668)
*1
SRS warning light
( P. 667)
*1, 2, 3
(if equipped)
Stop & Start cancel
indicator ( P. 669)
*1
ABS warning light
( P. 667) Low fuel level warning light
(
P. 669)
*3
Parking brake indicator
( P. 667) Driver’s and front
passenger’s seat belt
reminder light (
P. 669)
*1, 3
Brake hold operated
indicator ( P. 667)
*4
(if equipped)
Rear passengers’ seat
belt reminder light
( P. 669)
*1Electric power steering
system warning light
( P. 667)*1Tire pressure warning light
( P. 669)
*1Electric power steering
system warning light
( P. 667)*1
Master warning light
( P. 669)

1373-1. Key information
3
Operation of each component
RX350/RX200t_EE_OM48F32E
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year and a half.)
●If the battery becomes low, an alarm will soun d in the cabin when the engine is stopped. ( P. 638)
●As the electronic key always receives radio waves, the battery will become depleted
even if the electronic key is not used. The following symptoms indicate that the elec- tronic key battery may be depleted. Replace the battery when necessary. ( P. 638)
• The smart entry & start system or the wireless remote control does not operate.
• The detection area becomes smaller. • The LED indicator on the key surface does not turn on.
●To avoid serious deterioration, do not leave the electronic key within 1 m (3 ft.) of thefollowing electrical appliances that produce a magnetic field:
•TVs
• Personal computers • Cellular phones, cordless phones and battery chargers• Recharging cellular phones or cordless phones
• Induction cookers • Table lamps
■Replacing the battery
P. 638
■Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask any autho-
rized Lexus dealer or repairer, or another du ly qualified and equipped professional for details.
■If a wrong key is used
The key cylinder rotates freely, isolated from the internal mechanism.

2444-1. Before driving
RX350/RX200t_EE_OM48F32E
■Important points regarding stability
Vehicle movement resulting from unev en road surfaces and strong cross-
winds will affect handling. The vehicle may also be rocked by passing buses or
large trucks. Frequently check behind when moving alongside such vehicles.
As soon as such vehicle movement occurs, immediately start to decelerate
smoothly by slowly applying the brakes. Always steer the vehicle straight
ahead while braking.
■Passing other vehicles
Consider the total combined length of your vehicle and trailer and ensure that
the vehicle-to-vehicle distance is sufficient before executing lane changes.
■Transmission information
To maintain engine braking efficiency and charging system performance,
when using engine braking, do not use the transmission in D. If in the M mode,
the transmission shift range position must be in 4 or lower. ( P. 251)
■If the engine overheats
Towing a loaded trailer up a long, steep incline in temperatures exceeding
30 C (85F) may result in the engine overheating. If the engine coolant tem-
perature gauge indicates that the engine is overheating, turn the air condition-
ing off immediately, leave the road and stop the vehicle in a safe place.
( P. 718)
■When parking the vehicle
Always place wheel chocks under the wheels of both the vehicle and trailer.
Set the parking brake and shift the shift lever to P.

2684-3. Operating the lights and wipers
RX350/RX200t_EE_OM48F32E
■Windshield wiper linked headlight illumination
When driving during daytime with the headlig ht switch turned to , if the windshield
wipers are used, the headlights will turn on automatically after several seconds to help
enhance the visibility of your vehicle.
■Battery-saving function
In order to prevent the battery of the vehicle fr om discharging, if the light switch is in the
or position when the engine switch is turned off the battery saving function
will operate and automatically turn off all the lights after approximately 20 minutes.
When the engine switch is turned to IGNITION ON mode, the battery-saving function
will be disabled.
When any of the following are performed, the battery-saving function is canceled once
and then reactivated. All the lights will turn off automatically 20 minutes after the bat-
tery-saving function has been reactivated:
●When the headlight switch is operated
●When a door is opened or closed
■Customization
Some functions can be customized. ( P. 740)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is off.

3524-5. Using the driving support systems
RX350/RX200t_EE_OM48F32E
■Multi-information display messages
If the following situations, and a message may be displayed on the multi-information
display.
●When the engine cannot be stopped by the Stop & Start system
MessageDetails
“Depress Brake
Firmly to Activate”
The brake pedal is not depressed enough.
If the brake pedal is depressed further, the system
will operate.
“For Climate Control”
• The air conditioning system is being used when the ambient temperature is high or low.
If the difference between the set temperature and
cabin temperature is small, the system will be
enabled.
• is ON.
“Battery Charging”
• The battery charge amount may be low. Engine stop is temporarily prohibited to prioritize
charging of the battery, but if the engine is operated
for a short while, engine stop is allowed.
• A refresh charge may be occurring, such as when the battery is undergoing a periodic recharge, for a
while after the battery terminals have been discon-
nected and reconnected, for a while after the bat-
tery has been replaced, etc.
After a refresh charge of approximately 5 to 60 min-
utes completes, the system can be operated.
• If the message is displayed continuously (more than 60 minutes), the battery may be deteriorated. Con-
tact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional for
details.
“For Brake System”
• The vehicle is being driven in a high altitude area.
• The brake booster vacuum is low. When the brake booster vacuum reaches a prede-
termined level, the system will be enabled.
“Steering Wheel
Turned”
The steering wheel has been operated.
“Driver Seat Belt
Unbuckled”
The driver seat belt is not fastened.
“Stop & Start Unavail-
able”
• The Stop & Start system is temporarily disabled. Operate the engine for a short while.
• The engine may have been started with the hood open.
Close the hood, turn the engine switch off, wait for
30 seconds or more, and then start the engine.

3534-5. Using the driving support systems
4
Driving
RX350/RX200t_EE_OM48F32E
●When the engine automatically restarts while stopped by the Stop & Start system
■If “Stop & Start System Malfunction Visit Your Dealer” is displayed on the multi-infor-
mation display
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
■If the Stop & Start cancel indicator continues to flash
The system may be malfunctioning. Have the vehicle inspected by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
“System Temperature
Low”
The battery may be cold. Operate the engine for a short while allows the sys-
tem to recover due to the temperature increase in
the engine compartment.
“System Temperature
High”
The battery may be extremely hot. If the engine compartment is allowed to cool suffi-
ciently, the system will recover.
“Non-Dedicated Bat-
tery”
A non-dedicated battery for the Stop & Start system
may have been installed. The Stop & Start system does not operate. Have the
vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped pro-
fessional.
MessageDetails
MessageDetails
“For Climate Control”
• The air conditioning system has been turned on or is being used.
• has been turned on.
“For Brake System”
The brake pedal has been depressed further or
pumped. The system will be enabled after the engine runs and
the brake booster vacuum reaches a predetermined
level.
“Battery Charging”
The battery charge may have become low. The engine is restarted to prioritize battery charging.
Operating the engine for a short while allows the
system to recover.
“Steering Wheel
Turned”
The steering wheel was operated.
“Driver Seat Belt
Unbuckled”
The driver seat belt has been unfastened.

5145-11. Bluetooth®
RX350/RX200t_EE_OM48F32E
■Bluetooth® antenna
The antenna is built into the display. If the portable audio player is behind the seat or in the glove box or console box, or is
touching or covered by me tal objects, the connection status may deteriorate. If the cellular phone is behind the seat or in the console box, or touching or covered by metal objects, the connecti on status may deteriorate.
■Battery charge/signal status
●This display may not correspond exactly with the portable audio player or cellular phone itself.
●This system does not have a charging function.
●The portable audio player or cellular phone battery will be depleted quickly when the device is connected to Bluetooth®.
■When using the Bluetooth® audio and hands-free system at the same time
The following problems may occur.
●The Bluetooth® audio connection may be interrupted.
●Noise may be heard during Bluetooth® audio playback.
■About the contact in this system
The following data is stored for every registered cellular phone. When another phone is
connecting, you cannot read the registered data.
●Contact data
●Call history
●Favorite
●Message
When removing a Bluetooth® phone from the system, the above-mentioned data is also deleted.
■About Bluetooth®
The Bluetooth® word mark and logos are regis-tered trademarks owned by the Bluetooth SIG,
Inc. and any use of such marks by FUJITSU TEN LIMITED is under license. Other trademarksand trade names are those of their respective
owners.