2015 LEXUS RX350 warning lights

2402-4. Using other driving systems
■
Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following situations: ●
Actual vehicle speed is more than approximately 10 mph (16 km/h) below the
set vehicle speed.
At this time, the memorized set speed is not retained.●
Actual vehicle speed falls below approximately 25 mph (40 km/h).●
Enhanced VSC is activated. (vehicles with enhanced VSC)●
VSC is activated. (vehicles with VSC)■
Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle-to-vehicle
distance control operates properly. (Some obstructions, such as snow, ice and plas-
tic objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canc eled if an obstruction is detected.
■
Warning lights, messages and buzzer s for dynamic radar cruise control
Warning lights, messages and buzzers are us ed to indicate a system malfunction or
to inform the driver of the need for caution while driving. (  P. 7 5 9 )Grille cover
Radar sensor

2822-4. Using other driving systems
■
Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may also be
occasions when the sensor cannot detect pedestrians, animals, bicycles, motorcy-
cles, trees, or snowdrifts. ■
Situations in which the pre-collision system does not function properly
The system may not function effectively in situations such as the following: ●
On roads with sharp be nds or uneven surfaces●
If a vehicle suddenly moves in front of your vehicle, such as at an intersection●
If a vehicle suddenly cuts in front of your vehicle, such as when overtaking●
In inclement weather such as heav y rain, fog, snow or sand storms●
When your vehicle is skiddi ng with the VSC system off●
When an extreme change in vehicle height occurs●
When the axis of the radar is out of adjustment■
Automatic cancelation of the pre-collision system
When a malfunction occurs due to sensor contamination, etc. that results in the
sensors being unable to detect obstacles, the pre-collision system will be automati-
cally disabled. In this case, the system will not activate even if there is a collision pos-
sibility.■
When there is a malfunction in the system, or if the system is temporarily unus-
able
Warning lights and/or warning messages will turn on or flash. (  P. 744, 754)

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

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.

7545-2. Steps to take in an emergency
If a warning message is displayed
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.
Wa r n i n g m e s s a g e Details
(U.S.A.)

(Canada) Indicates the following:
• The brake fluid level is low; or,
• The brake system is malfunctioning.
A buzzer also sounds.If a warning is shown on the multi-information display, stay calm and per-
form the following actions:
Master warning light The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the
multi-information display.
Multi-information display
If any of the warning lights comes on again after the following actions
have been performed, contact your Lexus dealer.

7565-2. Steps to take in an emergency
Have the vehicle inspected by y our Lexus dealer immediately.
A buzzer sounds and a warning message is shown on the multi-informa-
tion display. Failure to investigate the cause of the fo llowing warnings may
lead to the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Lexus dealer immediately. Wa r n i n g m e s s a g e Details
(AWD models) Indicates a malfunction in the AWD system
Indicates a malfunction in the steering lock system
Indicates a malfunction in the brake lights system

873Alphabetical index
Daytime running light system............ 213
Defogger*
Rear window.......................................... 361
Side mirrors............................................ 361
Dimensions ............................................. 806
Dinghy towing ....................................... 323
Display
Multi-information display............... 200
Trip information .................................. 203
Warning message ............................ 754
Do-it-yourself maintenance..............664
Door courtesy lights
Door courtesy lights ........................ 595
Wattage ................................................... 817
Door lock
Back door ................................................ 56
Side door ...................................................52
Wireless remote control....................49
Door pockets ......................................... 600
Doors
Back door ................................................ 56
Door lock ................................35, 49, 52
Door windows ....................................... 98
Power back door ................................. 56
Side door ...................................................52
Side mirrors............................................. 95
Driver's seat belt reminder light ..... 747
Driving
Break-in tips ...........................................155
Correct posture ..................................... 117
Procedures ............................................. 154
Utility vehicle
precautions ........................................292
Winter driving tips ............................ 302
Driving position memory ...................... 76 Electric power steering ...................... 269
Electronic features control .............. 200
Electronic key
If the electronic key does not
operate properly ............................ 793
Emergency flashers
Switch....................................................... 734
Emergency, in case of
If a warning buzzer sounds........... 744
If a warning light turns on............... 744
If a warning message is
displayed............................................. 754
If the back door opener is
inoperative ..............................................61
If the electronic key does not
operate properly ............................ 793
If the engine will not start............... 789
If the shift lever cannot be
shifted from P .....................................791
If the vehicle has a discharged
battery ..................................................796
If you have a flat tire ......................... 774
If you lose your keys ......................... 792
If you think something is
wrong ................................................... 742
If your vehicle becomes stuck .... 802
If your vehicle has to be
stopped in an emergency ......... 804
If your vehicle needs to be
towed....................................................735
If your vehicle overheats ................799D E
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

877Alphabetical index
Mirrors
Inside rear view mirror .......................92
Side mirror heaters* .......................... 361
Side mirrors............................................. 95
Vanity mirrors .......................................610
Mobile Assistant*................................. 343
Moon roof .................................................. 101
MP3 disc* ..................................... 384, 501
Multi-display light control................... 615
Multi-information display
Switches ................................................. 200
Trip information .................................. 203
Noise from under vehicle .....................23
Odometer .................................................. 191
Oil
Engine oil ............................................... 674
Opener
Back door ................................................ 56
Fuel filler door ...................................... 105
Hood ....................................................... 667
Outer foot lights
Outer foot lights................................. 595
Wattage ................................................... 817
Outside rear view mirrors
Adjusting and folding ......................... 95
Mirror position memory ....................76
Outside temperature display*.......... 613
Overhead console .............................. 606
Overhead courtesy lights
Overhead courtesy lights ............. 595
Wattage ................................................... 817
Overheating, Engine ...........................799 Paddle shift switches .................... 171, 178
Parking assist sensors* ....................... 245
Parking brake .......................................... 189
Parking lights
Replacing light bulbs ..........................719
Switch.......................................................... 211
PCS
Function ..................................................278
Pre-collision braking off
switch.................................................... 279
Warning light ....................................... 745
Personal lights
Switch...................................................... 596
Phone* .......................................... 433, 565
Power back door ..................................... 56
Power easy access system .................. 78
Power outlet............................................. 616
Power windows ........................................98
Pre-collision system
Function ..................................................278
Pre-collision braking off
switch.................................................... 279
Warning light ....................................... 745
Radar cruise control ............................ 232
Radiator .................................................... 678
Radio*............................................ 368, 483
Rear seat entertainment system*
Rear seats
Folding down .......................................... 72
Seat adjustment ..................................... 72
Rear turn signal lights
Replacing light bulbs ..........................719
Wattage ................................................... 817
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.N O P
R