2012 Lexus ES350 sensor

153
2-3. Operating the lights and windshield wipers
2
When driving
ES350_U
■Customization that can be configured at Lexus dealer
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features →P. 5 1 1 )
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not running.

156
2-3. Operating the lights and windshield wipers
ES350_U
Windshield wipers and washer
With “AUTO” selected, the wipers will operate automatically when the
sensor detects falling rain. The system automatically adjusts wiper timing in
accordance with rain volume and vehicle speed.
Ty p e A
Rain-sensing wind-
shield wiper operation
Low speed windshield
wiper operation
High speed wind-
shield wiper operation
Temporary operation
Sensor sensitivity (high)
Sensor sensitivity (low)

157
2-3. Operating the lights and windshield wipers
2
When driving
ES350_U
Wash/wipe operation
Wipers operate automatically.
(With “AUTO” selected, after
operating several times, the wip-
ers operate one more time after
a short delay to prevent drip-
ping.)
Ty p e BRain-sensing wind-
shield wiper operation
Low speed windshield
wiper operation
High speed wind-
shield wiper operation
Temporary operation
Sensor sensitivity (high)
Sensor sensitivity (low)

158
2-3. Operating the lights and windshield wipers
ES350_U
■The windshield wiper and washer can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■Raindrop sensor
●If the temperature of the raindrop sensor is 194°F (90 °C) or higher, or 5 °F
(-15 °C) or lower, automatic operation may not occur. In this case, operate
the wipers in any mode other than “AUTO”.
■AUTO mode
If the wiper switch is turned to AUTO position while the “ENGINE START STOP”
switch is in IGNITION ON mode, the wiper will operate once to show that AUTO
mode is activated.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the wind-
shield washer fluid reservoir.
Wash/wipe operation
Wipers operate automatically.
(With “AUTO” selected, after
operating several times, the wip-
ers operate one more time after
a short delay to prevent drip-
ping.)
●The sensor judges the amount of raindrops.

159
2-3. Operating the lights and windshield wipers
2
When driving
ES350_U
CAUTION
■Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched or the
windshield is subjected to vibration in AUTO mode. Take care that your fingers or
anything else do not become caught in the windshield wipers.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled toward you
and held continually.
■When a nozzle becomes blocked
In this case, contact your Lexus dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.

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.

171
2-4. Using other driving systems
2
When driving
ES350_U
Adjusting the speed setting:
→P. 1 6 5
Canceling and resuming the speed
setting: →P. 1 6 7
■Dynamic radar cruise control can be set when
●The shift lever is in the D or range 4 or higher of S has been selected.
●Vehicle speed is above approximately 30 mph (50 km/h).
■Accelerating after setting the vehicle speed
The vehicle can accelerate normally. After acceleration, the set speed resumes.
However, during vehicle-to-vehicle distance control mode, the vehicle speed may
decrease below the set speed in order to maintain the distance to the vehicle
ahead.
■Automatic cancelation of vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the follow-
ing situations:
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●The sensor cannot operate correctly because it is covered in some way.
●The windshield wipers are operating at high speed (when the wiper switch is set
to the “AUTO” mode or the high speed wiper operation position).
If vehicle-to-vehicle distance control driving is automatically canceled for any other
reason, there may be a malfunction in the system. Contact your Lexus dealer.
■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.
●Vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.

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