sensor LEXUS LS430 2006 User Guide

132
2-4. Using other driving systems
■Setting vehicle speed
Settings can be made when the vehicle
is traveling above 28 mph (45 km/h).
■Unsuitable conditions
You cannot set the speed in the following conditions:
• When the selector lever is in a position other than D, 4, 5, or 6.
• When driving in adverse weather conditions.
■Automatic cruise control cancellation
In the following cases, the preset speed is can ce
lled. If the system is restored, cruise
control enters the ready mode.
• The slip indicator light blinks and a warning tone sounds.
• The anti-lock braking system activates.
• Foreign matter adheres to the sensor.
• The driving pattern selector sw it
ch is set to “SNOW” mode.
• The wipers are operated at high speed (radar), or either high or low speeds (l
aser). This includes high and low speed operation with the wiper lever in the
AUTO position.
• The vehicle’s speed falls below 25 mph (40 km/h). In this case, you must apply th
e brakes manually to slow the vehicle.
If the preset speed automatically cancels out for other than the above reasons, the
sy

stem may have malfunctioned. Do not operate the dynamic radar/laser cruise
control. You may continue driving, howe ver have your vehicle checked by your
Lexus dealer at the earliest opportunity.

133
2-4. Using other driving systems
2
When driving
■Vehicle-to-vehicle distances
Select a vehicle-to-vehicle distance appropriate
to traffic conditions. The approxi-
mate vehicle-to-vehicle distance based on time interval when driving at 55 mph
(88 km/h) is sho

wn below:
If the vehicle speed is slower than 55 mph (88 km/h), the distance will be shorter
than ab
ove.
■Millimeter wave radar lase r sensor/ Laser radar sensor
The radar or laser sensor automatically detects dirt on the sensor or grill cover
(r
adar cruise control), or the sensor glass (laser cruise control). If dirt is detected, a
message is displayed on the multi-informatio n display, and the radar or laser cruise
control function is automatically cancelled.
ModeVehicle-to-vehicle distance
Long245 f t. (approx. 75 m)
Middle164 ft. (approx. 50 m)
Short100 ft. (approx. 30 m)
Vehicles with dynamic radar cruise con-
trol 
(Standard for vehicles with the Pre-Col-
lision system)
Grill cover
Sensor
Vehicles with dynamic laser cruise con-
trol
Sensor

134
2-4. Using other driving systems
■Certifications for the millimeter wave radar laser sensor/ laser radar sensor
(U.S.A.)
●Millimeter wave radar sensor
FCC WARNING: 
Changes or modifications not expressly approved by the party responsible for
com
pliance could void the user’s authority to operate the equipment. 
FCC RF exposure information: 
This device complies with the FCC RF exposure requirements.
●Laser radar sensor 
This product is a class I laser product complied with 21 C.F.R part 1040.10 and
10
40.11.
■Certifications for the millimeter wave radar laser sensor/ laser radar sensor
(Canada)
Millimeter wave radar sensor 
Operation is subject to the following two conditions;
1. this device may not c
ause interference, and
2. this device must accept any interference r
eceived, including interference that
may cause undesired operation of the device.
■If the master warning light comes on and a warning message appears on the
multi-information display
If a system malfunction occurs when the dyn
amic radar/laser cruise control is on or
in the “RADAR READY” mode, the master warning light comes on, the “CRUISE”
indicator light flashes, a warning tone so unds, and “Check Cruise System” is dis-
played. ( P.334 )

136
2-4. Using other driving systems
CAUTION
■Conditions which hinder the laser cruise control’s vehicle detection capability
A delay in detection of a vehicle may occur in the following situations. You must
ap
ply the brakes manually to avoid accidents.
• The vehicle ahead has higher ground clearance, meaning the reflectors are in a higher position
.
• The rear section of the vehicle ahead is extremely dirty.
• Surrounding vehicles are fl in
ging up water or snow.
• Your front view is obscured by excessive exhaust smoke.
• Protective film is attached to the reflectors of the vehicle ahead, or they are d
amaged.
• Reflectors are not installed on the vehicle ahead.
• Heavy luggage in your trunk or on your r
ear seats causes the nose of your vehi-
cle to rise.
• A vehicle cuts in at short range.
• A motorcycle is traveling along the side of the same lane
■To ensure the radar/laser cruise control system functions correctly
●Keep the radar sensor and grille cover/la ser sensor glass clean. When cleaning,
use a soft cloth and be careful not to damage the sensor or grille cover.
●Avoid strong impacts around the sensor, as incorrect sensor alignment will result
in system malfunction. A special device is required to adjust the sensor alignment.
See your Lexus dealer for adjustment.
●Do not disassemble the sensor.
●Do not affix stickers (including transparent stickers), or attach accessories
around the sensor or grille cover/sensor glass.
●Do not modify or paint the grille cover. When replacing the cover, be sure to use
a genuine Lexus cover. *
* Vehicles equipped with the radar cruise control only.

143
2-4. Using other driving systems
2
When driving
Pre-collision system (if equipped)
■The pre-collision system may not operate effectively in the following situations:
●When traveling through a curve with objects on the edge of the road.
●When traveling through a curve with another vehicle passing in the opposite
direction.
●Narrow iron bridges.
●Metallic objects on the road.
●A steel plate on the road (e.g., at a construction site).
●When waiting to turn to the left in an in tersection with another vehicle passing in
the opposite direction.
●If your vehicle approaches another vehicle ahead very quickly.
The vehicle reacts to a frontal collision the instant before it happens using fol-
lowing components.
■ Pre-collision sensor
Uses the radar to detect possible obst acles ahead. Sensors then determine in
advance whether a crash is unavoidable.
■ Pre-collision seat belts (Front seat belts only)
Helps enhance their restraint performance by quickly retracting if an acci -
dent is calculated to be inevitable.
■ Pre-collision brake assist system
Once an accident is calculated to be inevitable, increased braking force will
be applied once the brake pedal is pressed.
■ Electronically modulated air suspension control
Once an accident is calculated to be inevitable, the vehicle adjusts the damp -
ing action of the shock absorbers to help keep the vehicle level.

144
2-4. Using other driving systems
CAUTION
■Pre-collision system limitations
●The Pre-Collision System is designed to help reduce the crash speed and dam-
age in certain frontal collisions only. It is not a collision avoidance system and is
no
t a substitute for safe and attentive driving. System effectiveness depends on
many factors, such as speed, dr iver input and road conditions.
●The sensor is able to detect objects in front of the vehicle within 10 degrees on
either side. If the object is out of range, or there is little to no millimeter wave
reflection, the sensor will not detect the object.
●Even if the system is operative in a collisio n, unless the seat belts are worn and the
brake pedal is depressed, the pre-collision seat belts and brake assist system will
operate.
■Failure Warning
If an error is detected, the master warn i
ng light comes on, a warning tone sounds
and the following warning message appears on the multi-information display.
(  P.334 )

241
3-5. Other interior features
3
Interior features
NOTICE
■To avoid compass malfunctions
Do not put magnets or any metal obje
cts near the audio system.
Doing this may cause a malfunction of the compass sensor.
■Notes during calibration
●Do not perform circling calibration of the compass in a place where the earth’s
magnetic field is subject to interference by artificial magnetic fields.
●During calibration, do not operate electr ic systems (moon roof, power windows,
etc.) as they may interfere with the calibration.

306
4-3. Do-it-yourself maintenance
FuseAmpereCircuit
IG230SRS airbag system, Engine immobilizer sys-
tem, Steering lock system, Starting system
HAZ15Emergency flashers
ST R LO C K7. 5Steering lock system
AM27. 5All components in "STA" and "IG2", Start -
ing system
MPX-B17. 5
Power door lock system, Engine immobi -
lizer system, Steering lock system, Front
power seat, Rear power seat
MPX-B37. 5
Tilt and telescopic steering, Headlight
switch, Windshield wiper and washer
switch, Turn signal switch
DOME10
Vanity lights, Outer foot lights, lgnition
switch light, Clock, Gauges and meters,
Interior lights, Personal lights
MPX-B27. 5Gauges and meters, Vehicle stability con -
trol system, Illuminated entry system, TEL
P RR-IG10Refreshing seat
H-LP LVL7. 5Headlight leveling system, Adaptive Front
Lighting System (AFS)
P- I G7. 5Rain sensor, Air conditioning system, Moon
roof, Multi-information display, Clock
P S/HTR15Seat heater, Climate control seat system
P- ACC7. 5
Air conditioning system, Audio system,
Clock, Multi-information display, Illumi -
nated entry system
P- C I G15Front cigarette lighter
RADIO NO.17. 5Audio system
RR DOOR LH20Power door lock system, Power window,
Door closer system, Door courtesy lights
P DOOR25
Power door lock system, Power rear view
mirror control system, Outside rear view
mirror defogger, Door closer system, Door
courtesy lights, Power windows
TEL7. 5Audio system, Navigation system
P B/ANC5Seat belts, Seat belt buckle illumination
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5
When trouble arises
333
5-2. Steps to take in an emergency
■If the electronic engine control system warning light remains on while driving
First check the following:
• Check fuel level, if the fuel tank is empty, refuel immediately.
• Check the fuel tank cap is loose tighten it securely.
The light will go off after driving regularly for some time.
If the light does not go off even after several trips, contact your Lexus dealer as soon
a
s possible.
■Front passenger detection sensor an d passenger’s seat belt reminder
●If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and a chime to sound, even if a pas -
senger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
CAUTION
■If both the ABS and brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
v

ehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.

336
5-2. Steps to take in an emergency
Warning message and lightDetails
Electronically modulated air suspension warning
Indicates a malfunction in the electronically
modulated air suspension system. The system
is not functioning while the warning message is
displayed. However, you can continue driving
until you reach a Lexus dealer.
Lexus park assist system warning
A sensor is malfunctioning or a cable is broken.
Th
e system is not functioning while the warning
message is displayed. However, you can con -
tinue driving until you reach a Lexus dealer.
• The faulty sonar is indicated on the graphic information display.
and
(flashes)
Dynamic radar/ laser cruise control system
warning
Indicates a malfunction in the dynamic radar/
laser cruise control system or the cruise control
system. Stop your vehicle in a safe place, turn
the ignition switch off and then on again to reset
the system. If settings cannot be made or the
same warning appears again, the system may
have malfunctioned. You may continue driving,
however contact your Lexus dealer.
Pre-collision safety system warning
Indicates a malfunction in the pre-collision
safety
system. The system is not functioning
while the warning message is displayed. How -
ever, you can continue driving until you reach a
Lex
us dealer.