ECU LEXUS RX350 2015 Owner's Guide

1622-1. Driving procedures
CAUTION■
Exhaust gases
Exhaust gases include harmfu l carbon monoxide (CO) th at is colorless and odor-
less. Inhaling exhaust gases may lead to death or a serious health hazard. ●
If the vehicle is in a poorly ventilated ar ea, stop the engine. In a closed area, such
as a garage, exhaust gases may collect and enter the vehicle. This may lead to
death or a serious health hazard.●
The exhaust system should be checked occasionally. If there is a hole or crack
caused by corrosion, damage to a joint or abnormal exhaust noise, be sure to
have the vehicle inspected and repaired by your Lexus dealer . Failure to do so
may allow exhaust gases to enter the vehicl e, resulting in death or a serious health
hazard.■
When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift lever or
depress the accelerator pedal, this could cause an accident or fire due to engine
overheating. Additionally, if the vehicle is parked in a poorly ventilated area, exhaust
gases may collect and enter th e vehicle, leading to death or a serious health hazard.■
When braking the vehicle ●
When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause one side
of the vehicle to brake differently than the other side. Also, the parking brake may
not securely hold the vehicle.●
If the power brake assist function does not operate, do not follow other vehicles
closely and avoid hills or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be depressed
more firmly than usual. Also, the braking distance will increase. Have your brakes
fixed immediately.●
Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted brakes.
●
The brake system consists of 2 individual hydraulic systems; if one of the systems
fails, the other will still operate. In this case, the brake pedal should be depressed
more firmly than usual and the braking distance will increase.
Have your brakes fixed immediately.

2892-4. Using other driving systems
2
When driving ■
Conditions under which the Blind Spot Monitor may not function correctly ●
The Blind Spot Monitor may not detect ve hicles correctly in the following condi-
tions:
• During bad weather such as heavy rain, fog, snow etc.
• When ice, mud etc. is attached to the rear bumper
• When driving on a road surface that is wet due to rain, standing water etc.
• When there is a significant difference in speed between your vehicle and the
vehicle that enters the detection area
• When a vehicle is in the detection area from a stop and remains in the detec-
tion area as your vehicle accelerates
• When driving up or down consecutive stee p inclines, such as hills, a dip in the
road etc.
• When multiple vehicles approach with only a small gap between each vehicle
• When vehicle lanes are wide, and the vehicle in the next lane is too far away
from your vehicle
• When the vehicle that enters the detect ion area is traveling at about the same
speed as your vehicle
• When there is a significant difference in height between your vehicle and the
vehicle that enters the detection area.
• Directly after the BSM switch is set to on.
• When towing a trailer
• When items such as a bicycle carrier are installed on the rear of the vehicle●
Instances of the Blind Sp ot Monitor unnecessarily detecting a vehicle and/or
object may increase under the following conditions:
• When there is only a short distance between your vehicle and a guardrail, wall
etc.
• When there is only a short distance between your vehicle and a following
vehicle.
• When vehicle lanes are narrow and a vehicle driving 2 lanes across from your
vehicle enters the detection area

2962-5. Driving information
Cargo and luggage
Capacity and distribution
Cargo capacity depends on the to tal weight of the occupants.
(Cargo capacity) = (Total load capa city) — (Total weight of occupants)
Steps for Determining Correct Load Limit 
(1) Locate the statement “The combined weight of occupants and cargo
should never exceed XXX kg or XXX lbs.” on your vehicle’s placard.
(2) Determine the combined weight of th e driver and passengers that will
be riding in your vehicle.
(3)Subtract the combined weight of the driver and passengers from
XXX kg or XXX lbs.
(4)The resulting figure equals the av ailable amount of cargo and luggage
load capacity.
For example, if the “XXX” amount equals 1400 lbs. and there will be
five 150 lb passengers in your ve hicle, the amount of available cargo
and luggage load capacity is 650 lbs. (1400  750 (5  150) = 650
lbs.)
(5)Determine the combined weight of luggage and cargo being loaded
on the vehicle. That weight may no t safely exceed the available cargo
and luggage load capacity calculated in Step 4. Take notice of the following information about storage precautions, cargo
capacity and load.
● Stow cargo and luggage in the luggage compartment whenever
possible.
● Be sure all items are secured in place.
● Be careful to keep the vehicle level. Placing the weight as far for-
ward as possible helps maintain vehicle balance.
● For better fuel economy, do not carry unnecessary weight.

2982-5. Driving information
As shown in the example above, if the number of occupants increases,
the cargo and luggage load will be re duced by an amount that equals the
increased weight due to the addition al occupants. In other words, if an
increase in the number of occupants ca uses an excess of the total load
capacity (combined weight of occupants plus cargo and luggage load),
you must reduce the cargo and luggage on your vehicle. CAUTION■
Things that must not be carri ed in the luggage compartment
The following things may cause a fire if loaded in the luggage compartment: ●
Receptacles containing gasoline●
Aerosol cans■
Storage precautions
Observe the following precautions.
Failure to do so may result in death or serious injury. ●
Stow cargo and luggage in the lugga ge compartment whenever possible.●
Do not stack cargo and luggage in the luggage compartment higher than the
seatbacks.
Such items may be thrown about and possib ly injure people in the vehicle in the
event of sudden braking or in an accident.●
Do not place cargo or luggage in or on the following locations as the items may
get under the brake or accelerator pedal and prevent the pedals from being
depressed properly, block the driver’s vision, or hit the driver or passengers,
causing an accident:
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the luggage cover
• On the instrument panel
•On the dashboard
●
Secure all items in the occupant compartment, as they may shift and injure some-
one in the event of sudden braking, sudden swerving or an accident.

2992-5. Driving information
2
When driving CAUTION●
Never allow anyone to ride in the luggage compartment. It is not designed for
passengers. They should ride in their seat s with their seat belt s properly fastened.
Otherwise, they are much more likely to suffer death or serious bodily injury, in
the event of sudden braking, sudden swerving or an accident.■
Capacity and distribution ●
Do not exceed the maximum axle weight ra ting or the total vehicle weight rating. ●
Even if the total load of occupant's weight and the cargo load is less than the total
load capacity, do not apply the load unevenly. Improper loading may cause dete-
rioration of steering or braking control which may cause death or serious injury.■
Roof luggage carrier precautions (if equipped)
To use the roof rails as a roof luggage carrier, you must fit the roof rails with two or
more genuine Lexus cross rails or their equivalent.
When you load cargo on the roof luggage carrier, observe the following:
●
Before driving, make sure the cargo is securely fastened on the roof luggage car-
rier.●
Loading cargo on the roof luggage carrier will make the center of gravity of the
vehicle higher. Avoid high speeds, sudden starts, sharp turns, sudden braking or
abrupt maneuvers, otherwise the result may be a loss of control or vehicle roll-
over due to failure to operate this vehicl e correctly and result in death or serious
injury.
●
If driving for long distances, on rough ro ads, or at high spee ds, stop the vehicle
now and then during the trip to make sure the cargo remains in its place.
●
Do not exceed 165 lb. (75 kg) cargo weight on the roof luggage carrier.
●
To reduce wind noise when there is no luggage loaded on the roof luggage car-
rier, move the front cross rail to the front-most position and the rear cross rail to
the rearmost position. ●
Place the cargo so that its weight is distrib-
uted evenly between the front and rear
axles. ●
If loading long or wide cargo, never exceed
the vehicle’s overall length or width.
(  P. 8 0 6 )Cross rails
Roof rails

3192-5. Driving information
2
When driving ■
Matching trailer ball height to trailer coupler height
■
Before towing
Check that the following conditions are met: ●
Ensure that your vehicle’s ti res are properly inflated. (  P. 8 1 5 )●
Trailer tires are inflated according to the trailer manufacturer’s recommenda-
tion.●
All trailer lights work as required by law.●
All lights work each time you connect them.●
The trailer ball is set at the proper height for the coupler on the trailer.●
The trailer is level when it is hitched.
Do not drive if the trailer is not level, and check for improper tongue weight,
overloading, worn suspension , or other possible causes.
●
The trailer cargo is securely loaded.
●
The rear view mirrors conform to all applicable federal, state/provincial or local
regulations. If they do not, install rear view mirrors appropriate for towing pur-
poses. No matter which class of tow hitch applies,
for a more safe trailer hookup, the trailer ball
setup must be the proper height for the cou-
pler on the trailer.
Coupler
Trailer ball

3222-5. Driving information
CAUTION■
Hitch
Trailer hitch assemblies have different weight capacities established by the hitch
manufacturer. Even though the vehicle may be physically capable of towing a
higher weight, the operator must determin e the maximum weight rating of the par-
ticular hitch assembly and never exceed the maximum weight rating specified for
the trailer-hitch. Exceeding the maximum weight rating se t by the trailer-hitch man-
ufacturer can cause an accident resulting in death or serious personal injuries.■
When towing a trailer
Lexus recommends trailers with brakes that conform to any applicable federal and
state/provincial regulations. ●
If the gross trailer weight exceeds unbraked TWR, trailer brakes are required.
Lexus recommends trailers with brakes that conform to all applicable federal and
state/provincial regulations.●
Never tap into your vehicle’s hydraulic system, as this will lower the vehicle’s brak-
ing effectiveness.●
Never tow a trailer without using a safety chain securely attached to both the
trailer and the vehicle. If damage occurs to the coupling unit or hitch ball, there is
danger of the trailer wand ering into another lane.
NOTICE■
When installing a trailer hitch
Use only the position recommended by your Lexus dealer. Do not install the trailer
hitch on the bumper; this may cause body damage.■
Do not directly splice trailer lights
Do not directly splice trailer lights. Direct ly splicing trailer li ghts may damage your
vehicle’s electrical system and cause a malfunction.

Interior features
3
327Using the hands-free system
(for mobile phones)............. 565
Making a phone call .............. 573
Setting a mobile phone......... 578
Security and system
setup ....................................... 584
Using the phone book.......... 588
3-5. Using the interior lights
Interior lights list ..................... 595
• Interior lights ........................ 596
• Personal lights ...................... 596
3-6. Using the storage
features
List of storage features ......... 598
• Glove box .............................. 599
• Bottle holders/
door pockets ........................ 600
• Cup holders ........................... 601
• Console box .......................... 604
• Coin holder ........................... 606
• Auxiliary boxes .................... 606
• Under tray ............................ 608 3-7. Other interior features
Sun visors ................................. 609
Vanity mirrors .......................... 610
Clock ............................................ 611
Outside temperature
display...................................... 613
Multi-display light control ..... 615
Power outlets ............................ 616
Heated steering wheel .......... 619
Seat heaters and
ventilators ............................. 620
Armrest .................................... 622
Coat hooks .............................. 623
Assist grips ................................ 624
Floor mat .................................. 625
Luggage compartment
features ................................... 627
Garage door opener ............ 632
Compass .................................. 638
Safety Connect ...................... 642

3813-3. Using the Lexus Display Audio system
3
Interior features ■
If the satellite radio does not operate normally
If a problem occurs with the XM ®
tuner, a message will appear on the display. Refer
to the table below to identify the problem, and take the suggested corrective action.
Message Explanation
SAT Check
Antenna The XM antenna is not co nnected. Check whether the
XM antenna cable is attached securely.
A short circuit occurs in the antenna or the surround-
ing antenna cable. See a Lexus certified dealer for
assistance.
SAT Ch Unautho-
rized You have not subscribed to XM Satellite Radio. The
radio is being updated with the latest encryption code.
Contact XM Satellite Radio for subscription informa-
tion. When a contract is canceled, you can choose
“CH 000” and all free-to-air channels.
The premium channel you selected is not authorized.
Wait for about 2 seconds until the radio returns to the
previous channel or “CH001”. If it does not change
automatically, select another channel. To listen to the
premium channel, contact XM Satellite Radio.
SAT No Signal The XM signal is too weak at the current location. Wait
until your vehicle reaches a location with a stronger
signal.
Loading The unit is acquiring audio or program information.
Wait until the unit has received the information.
SAT Channel Off
Air The channel you selected is not broadcasting any pro-
gramming. Select another channel.

4183-3. Using the Lexus Display Audio system
Input the passcode displayed on
the screen into your portable
audio player. For the operation of the portable
audio player, see the manual that
comes with your portable audio
player.
Passcodes are not required for SSP
(Secure Simple Pairing) compati-
ble Bluetooth ®
devices. Depend-
ing on the device, you may need to
select “Yes” to register, or “No” to
cancel on your Bluetooth ®
device.
If you want to cancel it, select
“Cancel”.
If a completion message is dis-
played, registration is complete.
If an error message is displayed,
follow the guidance on the screen
to try again.STEP 4