2012 Lexus HS250h fog light

198
2-3. Operating the lights and windshield wipers
HS250h_U_75050U
■The Automatic High Beam can be operated when
The “POWER” switch is ON mode.
■Camera sensor detection information
●High beam may not be automatically turned off in the following situations:
• When oncoming vehicles suddenly appear from a curve.
• When the vehicle is cut in front of by another.
●High beam may be turned off if an oncoming vehicle that is using fog lights with-
out using the headlights is detected.
●House lights, street lights, red traffic signals, and illuminated billboards or signs
may cause the high beam to turn off.
■High beam automatic turn ing on or off conditions
When all of the following conditions are fulfilled, high beam will be
automatically turned on (after approximately 1 second):
● Vehicle speed is above approximately 20 mph (32 km/h).
● The area ahead of the vehicle is dark.
● There are no oncoming or preceding vehicles with headlights or
tail lights turned on.
If any of the following conditions are fulfilled, high beam will be auto-
matically turned off:
● Vehicle speed drops below approximately 20 mph (32 km/h).
● The area ahead of the vehicle is not dark.
● Oncoming or preceding vehicles have headlights or tail lights
turned on.

199
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
●The following factors may affect the amount of time taken to turn high beam on
or off:
• The brightness of headlights, fog lights, and tail lights of oncoming and pre-ceding vehicles
• Road conditions (wetness, ice, snow etc.)
• The number of passengers and amount of baggage
●High beam may be turned on or off when unexpected by the driver.
●In the situations below, the system may not be able to correctly detect the sur-
rounding brightness levels, and may flash or expose nearby pedestrians to the
high beam. Therefore, you should consider turning the high beams on or off
manually rather than relying on the Automatic High Beam System.
• In bad weather (rain, snow, fog, sandstorms etc.)
• The windshield is obscured by fog, mist, ice, dirt etc.
• The windshield is cracked or damaged.
• The inside rear view mirror or camera sensor is deformed or dirty.
• Surrounding brightness levels are equal to those of headlights, tail lights or fog lights.
• Vehicles ahead have headlights that are either switched off, dirty, are chang-
ing color, or have are not aimed properly.
• When driving through an area of intermittently changing brightness and darkness
• When frequently and repeatedly driving ascending/descending roads, or roads with rough, bumpy or uneven surfaces (such as stone-paved roads,
gravel tracks etc.)
• When frequently and repeatedly taking curves or driving on a winding road
• There is a highly reflective object ahead of the vehicle, such as a sign or a mir- ror.
• The vehicle’s headlights are damaged or dirty.
• The vehicle is listing or tilting, due to a flat tire, a trailer being towed etc.
• The Automatic High Beam indicator is flashing.
• The high beam and low beam are repeatedly being switched between in an abnormal manner.
• The driver believes that the high beam may be causing problems or distress to other drivers or pedestrians nearby.

202
2-3. Operating the lights and windshield wipers
HS250h_U_75050U
Fog light switch
The fog lights secure excellent visibility in difficult driving conditions, such
as in rain and fog.
Type ATurns the front fog
lights off
Turns the front fog
lights on

203
2-3. Operating the lights and windshield wipers
2
When driving
HS250h_U_75050U
■Fog lights can be used when
The headlights are on in low beam.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.
Type BTurns the front fog
lights off
Turns the front fog
lights on

236
2-4. Using other driving systems
HS250h_U_75050U
NOTICE
■In the following situations, the LKA will not work, or will not perform reliably:
●When lane markers are interrupted or are not present, such as before a tollbooth.
●When lane markers are only on one side of the road.
●When driving on a sharp curve.
●When lanes are extremely narrow or extremely wide.
●When the vehicle leans to one side an unusual amount due to a heavy load or
improper tire inflation pressure.
●When the following distance between your vehicle and the vehicle ahead is
extremely short.
●When the lane markers are broken, “Botts’ dots”, or “Raised pavement marker”.
●When lane markers are obscured or partially obscured by sand, dirt, etc.
●When driving on a particularly bright road surface, such as concrete.
●When driving on a road surface that is bright due to reflected light.
●When driving in a location where the light level changes rapidly, such as the
entrance to or exit from a tunnel.
●When sunlight or the headlights of oncoming vehicles are shining directly into the
camera lens.
●When driving on roads that are branching or merging.
●When pavement lane markers are difficult to see due to rain, snow, fog, etc.
●When driving on a road surface that is wet due to rain, previous rainfall, standing
water, etc.
●When the vehicle experiences strong up-and-down motion such as when driving
on an extremely rough road or on a seam in the pavement.
●When headlight brightness is reduced due to dirt on the lenses, or when the
headlights are misaligned.
●When driving with a strong crosswind.

249
2-4. Using other driving systems
2
When driving
HS250h_U_75050U
■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
●When your vehicle is skidding with the VSC system off
●When the radar sensor is out of alignment (→P. 252)
■Automatic cancellation 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.
■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.
■If the PCS warning light turns on or flashes
●If the PCS warning light begins flashing and “CHECK PCS SYSTEM” appears
on the multi-information display, this indicates a malfunction in the pre-collision
system. ( →P. 5 1 3 )
●If the PCS warning light turns on and “PCS TEMPORARILY NOT
AVAILABLE” appears on the multi-information display, this indicates that the
grille or radar sensor is dirty. ( →P. 5 1 6 )

422
4-1. Maintenance and care
HS250h_U_75050U
NOTICE
■Cleaning detergents
●Do not use the following types of detergent, as they may discolor the vehicle inte-
rior or cause streaks or damage to painted surfaces:
• Non-seat portions: Organic substances such as benzene or gasoline, alkalineor acidic solutions, dye, and bleach
• Seats: Alkaline or acidic solutions, such as thinner, benzene, and alcohol
●Do not use polish wax or polish cleaner. The instrument panel’s or other interior
part’s painted surface may be damaged.
■Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of leather
surfaces:
●Remove any dust or dirt from leather surfaces immediately.
●Do not expose the vehicle to direct sunlight for extended periods of time. Park
the vehicle in the shade, especially during summer.
●Do not place items made of vinyl, plastic, or containing wax on the upholstery, as
they may stick to the leather surface if the vehicle interior heats up significantly.
■Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes into
contact with electrical components such as the audio system above or under the
floor of the vehicle. Water may also cause the body to rust.
■Cleaning the inside of the rear window
●Do not use glass cleaner to clean the rear window, as this may cause damage to
the rear window defogger heater wires or antenna. Use a cloth dampened with
lukewarm water to gently wipe the window clean. Wipe the window in strokes
running parallel to the heater wires or antenna.
●Be careful not to scratch or damage the heater wires or antenna.

473
4-3. Do-it-yourself maintenance
4
Maintenance and care
HS250h_U_75050U
10P CON MAIN7. 5 A
P position control system, hybrid sys-
tem, smart access system with push-
button start
11AM27. 5 A
Smart access system with push-button
start, hybrid system, multiport fuel
injection system/sequential multiport
fuel injection system, P position con-
trol system, cruise control system,
dynamic radar cruise control system
12ECU-B27. 5 A
Smart access system with push-button
start, multiport fuel injection system/
sequential multiport fuel injection sys-
tem, trunk opener switch
13MAYDAY10 AMAYDAY
14ECU-B310 AAir conditioning system, rear window
defogger, mirror heater
15TURN & HAZ10 ATurn signal lights, emergency flashers
16ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
17ABS MAIN NO.120 AElectronically controlled brake system
18P/ I 240 A
P position control system, hybrid sys-
tem, transmission, smart access sys-
tem with push-button start, horn,
headlights (low beam), back-up lights
19ABS MTR 130 AElectronically controlled brake system
20ABS MTR 230 AElectronically controlled brake system
21H-LP HI MAIN20 AHeadlights (high beam)
22AMP NO.230 AAudio system, navigation system
FuseAmpereCircuit