2012 Lexus ES350 warning

143
2-2. Instrument cluster
2
When driving
ES350_U
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS airbag warning lights not
come on when you start the engine, this could mean that these systems are not
available to help protect you in an accident, which could result in death or serious
injury. Have the vehicle inspected by your Lexus dealer immediately if this occurs.
■Warning lights
Warning lights inform the driver of malfunctions or suspected prob-
lem in any of the vehicle’s systems. ( →P. 4 3 9 )
*: These lights turn on when the “ENGINE START STOP” switch is turned
to IGNITION ON mode to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few sec-
onds. There may be a malfunction in a system if a light does not come on,
or if the lights do not turn off. Have the vehicle inspected by your Lexus
dealer.
(USA)(Canada)(USA)(Canada)
(USA)(Canada)(if equipped)(without
navigation system)(with naviga-
tion system)
******
*****

144
2-2. Instrument cluster
ES350_U
Multi-information display
The multi-information display presents the driver with a variety of driving-
related data, including the current outside air temperature.
●Trip information ( →P. 145)
Displays driving range, fuel con-
sumption and other cruising
related information.
●Intuitive parking assist dis-
play (if equipped)
(→P. 1 76 )
Automatically displayed when
using intuitive parking assist.
●Dynamic radar cruise con-
trol display (if equipped)
(→P. 1 6 4 )
Automatically displayed when
using dynamic radar cruise con-
trol.
●Warning messages
(→P. 4 4 9 )
Automatically displayed when a
malfunction occurs in one of the
vehicle’s systems.

168
2-4. Using other driving systems
ES350_U
Driving in vehicle-to-vehicle distance control mode
This mode employs a radar sensor to detect the presence of vehicles up
to approximately 400 ft. (120 m) ahead, determines the current vehicle-
to-vehicle following distance, and operates to maintain a suitable follow-
ing distance from the vehicle ahead.
Note that vehicle-to-vehicle distance will close in when traveling on long
downhill slopes.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-vehi-
cle distance can also be set by operating the vehicle-to-vehicle distance con-
trol.
Example of deceleration cruising
When the vehicle ahead is driving slower than the set speed
When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a greater reduction in vehicle speed is nec-
essary, the system applies the brakes. A warning tone warns you when the
system cannot decelerate sufficiently to prevent your vehicle from closing in
on the vehicle ahead.

169
2-4. Using other driving systems
2
When driving
ES350_UExample of follow-up cruising
When following a vehicle driving slower than the set speed
The system continues follow-up cruising while adjusting for changes in the
speed of the vehicle ahead in order to maintain the vehicle-to-vehicle dis-
tance set by the driver.
Example of acceleration
When there are no longer any vehicles ahead driving slower than the
set speed
The system accelerates until the set speed is reached. The system then
returns to constant speed cruising.
Approach warning
When your vehicle is too close to a vehicle ahead, and sufficient auto-
matic deceleration via the cruise control is not possible, the display will
flash and the buzzer will sound to alert the driver. An example of this
would be if another driver cuts in front of you while you are following a
vehicle. Apply the brakes to ensure an appropriate vehicle-to-vehicle dis-
tance.
■ Warnings may not occur when
In the following instances, there is a possibility that the warnings will not
occur:
●When the speed of the vehicle ahead matches or exceeds your
vehicle speed
● When the vehicle ahead is traveling at an extremely slow speed
● Immediately after the cruise control speed was set
● At the instant the accelerator is applied

172
2-4. Using other driving systems
ES350_U
■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 canceled if an obstruction is detected.
■Warning lights, messages and buzzers for dynamic radar cruise control
Warning lights, messages and buzzers are used to indicate a system malfunction or
to inform the driver of the need for caution while driving. (→P. 4 4 9 )
■Certification
For vehicles sold in U.S.A.
FCC ID: HYQDNMWR005
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions;
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that
may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
Radio frequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an uncon-
trolled environment.
This equipment should be installed and operated with minimum distance of 20 cm
between the radiator and your body.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter Grille cover
Radar sensor

174
2-4. Using other driving systems
ES350_U
CAUTION
■Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an accident
resulting in death or serious injury.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those covered with rain, ice and snow
●On steep downhills, or where there are sudden changes between sharp up and
down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.
●At entrances to expressways
●When weather conditions are bad enough that they may prevent the sensors
from functioning correctly (fog, snow, sandstorm, heavy rain, etc.)
●When an approach warning buzzer is heard often
●During emergency towing
■When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in
front of you.
As the sensor may not be able to correctly detect these types of vehicles, the
approach warning (→P. 169) will not be activated, and a fatal or serious accident
may result.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving
●Vehicles with small rear ends (trailers with no load on board etc.)
●Motorcycles traveling in the same lane

178
2-4. Using other driving systems
ES350_U■
Back sensor operation display and distance to an obstacle
The system operates when the vehicle approaches within approxi-
mately 4.9 ft. (150 cm) of an obstacle.
Approximately 4.9 ft. (150 cm)
to 2.0 ft. (60 cm) from the
obstacle
Approximately 2.0 ft. (60 cm) to
1.5 ft. (45 cm) from the obstacle
Approximately 1.5 ft. (45 cm) to
1.2 ft. (35 cm) from the obstacle
Flashing: Within 1.2 ft. (35 cm)
of the obstacle
■ Buzzer operation and distance to the obstacle
A buzzer sounds when the corner sensors and back sensor are oper-
ating.
● The buzzer beeps faster as the vehicle approaches an obstacle.
When the vehicle comes within the following distance of the obsta-
cle, the buzzer sounds continuously.
•Corner sensors: Approximately 0.8 ft. (25 cm)
• Back sensors: Approximately 1.2 ft. (35 cm)
● When two or more obstacles are detected simultaneously, the
buzzer system responds to the nearest obstacle.
● If multiple obstacles are detected within 0.8 ft. (25 cm) in front and
behind the vehicle at the same time, the warning buzzer will change
in the following manner:
• If a continuous beep is sounding, and a new obstacle is detected
near a different area of the vehicle, the warning buzzer will sound
6 beeps then one continuous beep.
• If a continuous beep is sounding, and a new obstacle is detected within 0.8 ft. (25 cm) of a different area of the vehicle, the warn-
ing buzzer will sound 2 beeps then one continuous beep.

189
2-4. Using other driving systems
2
When driving
ES350_U
●When climbing a steep hill causes an overhead billboard or other metallic struc-
ture to appear directly in the vehicle's line of travel.
●When an extreme change in vehicle height occurs
●When the axis of the radar is out of adjustment
●When passing through certain toll gates
When the system is activated in the situations described above there is also a possi-
bility that the seat belts will retract quickly and the brakes will be applied with a force
greater than normal. When the seat belt is locked in the retracted position, stop the
vehicle in a safe place, release the seat belt and refasten.
■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 bends or uneven surfaces
●On slippery roads such as those covered with ice or snow
●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 heavy rain, fog, snow or sand storms
■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
Warning lights and/or warning messages will turn on or flash. ( →P. 439, 449)