engine Lexus IS250 2007 Basic Functions / LEXUS 2007 IS350/250 (OM53578U) Repair Manual

152
2-4. Using other driving systems
■Hill-start assist control is operational when
●The shift lever is in the D or S position.
●The brake pedal is not depressed.
■Reduced effectiveness of EPS
The effectiveness of EPS is reduced to prevent the system from overheating when
there is frequent steering input over an extended period of time. The steering wheel
may feel heavy as a result. Should this occur, refrain from excessive steering input or
stop the vehicle and turn the engine OFF. The system should return to normal within
10 minutes.
CAUTION
Any of the following conditions may result in an accident which could cause death or
serious injury:
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded.
●The vehicle hydroplanes while driving at high speed on the wet or slick road.
■Stopping distance when the ABS is operating will exceed that of normal condi-
tions
The ABS is not designed to shorten the vehicle’s stopping distance. Always main-
tain a safe distance from the vehicle in front of you in the following situations.
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with potholes or roads with uneven roads

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2-5. Driving information
2
When driving
Winter driving tips
Carry out the necessary preparations and inspections before driving the
vehicle in winter. Always drive the vehicle in a manner appropriate to the
prevailing weather conditions.
■Pre-winter preparations
●Use fluids that are appropriate to the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
• Have a service technician inspect the level and specific gravity
of battery electrolyte.
●Have the vehicle fitted with four snow tires or purchase a set of
tire chains for the rear tires.
Ensure that all tires are the specified size and the same brand, and that
chains match the size of the tires.
■Before driving the vehicle
Perform the following according to the driving conditions.
●Do not try to forcibly open a window or move a wiper that is fro-
zen. Pour warm water over the frozen area to melt the ice. Wipe
away the water immediately to prevent it from freezing.
●To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
●Remove any ice that has accumulated on the vehicle chassis.
●Periodically check for and remove any excess ice or snow that
may have accumulated in the wheel well or on the brakes.

167
2-5. Driving information
2
When driving
Dinghy towing (vehicles with a manual transmission)
Towing your vehicle with 4 wheels on the ground
To prevent damage to your vehicle, perform the following procedures
before towing.
Shift the shift lever to neutral.
Switch to ACC mode. (P. 9 8 )
Ensure that the audio system and other powered devices have been
turned OFF.
Release the parking brake.
After towing, leave the engine in idle for at least 3 minutes before driv-
ing the vehicle.
■Necessary equipment and accessories
Specialized equipment and accessories are required for dinghy towing. Contact
the service branch of the motor home manufacturer regarding recommended
equipment.
Your vehicle can be dinghy towed in a forward direction (with 4 wheels on
the ground) behind a motor home.
STEP1
STEP2
STEP3

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2-5. Driving information
NOTICE
■Dinghy towing direction
■To prevent the steering from locking
Ensure the engine switch is in ACC mode.
Do not tow the vehicle backwards.
Doing so may cause serious damage.

177
3-1. Using the air conditioning system and defogger
3
Interior features
CAUTION
■To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The dif-
ference between the temperature of the outside air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
NOTICE
■To prevent battery discharge
Do not leave the automatic air conditioning system on longer than necessary when
the engine is stopped.

181
3-2. Using the audio system
3
Interior features
NOTICE
■To prevent battery discharge
Do not leave the audio system on longer than necessary with the engine off.
■To avoid damaging the audio system
Take care not to spill drinks or other fluids over the audio system.

209
3
Interior features
3-3. Using the interior lights
Interior lights list
Your Lexus is equipped with the illuminated entry system to assist in enter-
ing the vehicle. Owing to the function of the system, the lights shown in the
following illustration automatically turn on/off according to the presence of
the electronic key, whether the doors are locked/unlocked, whether the
doors are opened/closed, and the engine switch mode.
Front personal lights (P. 211)
Front interior light (P. 211)
Front overhead courtesy light
Rear personal lights (P. 211)
Rear interior light
Rear overhead courtesy light
Shift lever lighting (when engine switch is in ACC or IG-ON mode)
Front foot well lighting

210
3-3. Using the interior lights
■Illuminated entry system
The following interior lights come on automatically when you approach the vehicle
with the electronic key on your person. Note that the illuminated entry system oper-
ates only when the interior light switch (door position ON/OFF) is ON.
●Front overhead courtesy light
●Rear overhead courtesy light
●Outer foot light
The following lights turn on when any of the doors is unlocked or opened.
●Front interior light
●Rear interior lights
●Front foot well lighting
●Front door courtesy lighting
●Front scuff lighting
The following lights turn on for approximately 15 seconds when the engine switch is
turned to OFF from the IG-ON or ACC mode. (The lights turn off immediately if
the doors are locked or the engine switch is set to ACC or IG-ON mode.)
●Front overhead courtesy light
●Rear overhead courtesy light
■To prevent the battery from being discharged
If the overhead courtesy lights and interior lights remain ON when the door is not
fully closed and the interior light switch (door position ON/OFF) is ON, the lights
will go off automatically after 20 minutes.
■Customization
Setting (e.g. The time elapsed before lights turn off) can be changed. (
P. 406)
Front door courtesy lighting
Front scuff lighting (if equipped)
Outer foot lights
Turning the instrument panel light control knob fully to the left disables the
shift lever lighting and front foot well lighting.

214
3-4. Using the storage features
Console boxes
Front
Pull up the knob to release the
lock.
Slide armrest.
Pull up the knob to release the
lock.
Lift the armrest to open.
Rear (if equipped)
Press the button to release the
lock.
Lift the armrest to open.
■Glove box light
The glove box light turns on when the engine switch is in IG-ON mode.
■Trunk opener main switch
The trunk opener main switch located in the glove box. ( P. 2 3 )
CAUTION
■Caution while driving
Keep the glove box closed.
Injuries may result in the event of an accident or sudden braking.
Glove box and console boxes

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3-4. Using the storage features
3
Interior features
Overhead console
The overhead console is useful for
temporarily storing sunglasses and
similar small items.
■Console box light (front)
The console box light turn on when the engine switch is in IG-ON mode.
■Using the front console box to store CD cases
CAUTION
■Caution while driving
Keep the console box closed.
Injuries may result in the event of an accident or sudden braking.
Store a CD case with the hinged portion fac-
ing either the front or back of the console
box.
Console boxes and overhead console