Snow button Lexus IS250 2014 Owner's Manual

2284-5. Using the driving support systems
IS250_EE(OM53C51E)
CAUTION
■To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON/OFF” button when not in use.
■Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in loss of 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 or snow
●On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.
●When your vehicle is towing a trailer or during emergency towing

2394-5. Using the driving support systems
4
Driving
IS250_EE(OM53C51E)
CAUTION
■Before using dynamic radar cruise control
Do not overly rely on vehicle-to-vehicle distance control.
Be aware of the set speed. If automatic deceleration/acceleration is not appropriate,
adjust the vehicle speed, as well as the distance between your vehicle and vehicles
ahead by applying the brakes etc.
■Cautions regarding the driving assist systems
Observe the following precautions.
Failure to do so may cause an accident resulting in death or serious injury.
●Assisting the driver to measure following distance
The dynamic radar cruise control is only intended to help the driver in determining
the following distance between the driver’s own vehicle and a designated vehicle
traveling ahead. It is not a mechanism that allows careless or inattentive driving, and it
is not a system that can assist the driver in low-visibility conditions. It is still necessary
for driver to pay close attention to the vehicle’s surroundings.
●Assisting the driver to judge proper following distance
The dynamic radar cruise control determines whether the following distance
between the driver’s own vehicle and a designated vehicle traveling ahead is appro-
priate or not. It is not capable of making any other type of judgement. Therefore, it is
absolutely necessary for the driver to remain vigilant and to determine whether or not
there is a possibility of danger in any given situation.
●Assisting the driver to operate the vehicle
The dynamic radar cruise control has no capability to prevent or avoid a collision with
a vehicle traveling ahead. Therefore, if there is ever any danger, the driver must take
immediate and direct control of the vehicle and act appropriately in order to ensure
the safety of all involved.
■To avoid inadvertent cruise control activation
Switch the cruise control off using the “ON/OFF” button when not in use.
■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 result-
ing 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 or 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
●When your vehicle is towing a trailer or during emergency towing

583Alphabetical index
IS250_EE(OM53C51E)
Power window switches ..................167
Rear sunshade switch..................... 400
Rear window and outside rear
view mirror defoggers
switch....................................................382
Seat heater switches ....................... 388
Seat ventilator switches ................. 388
Snow mode switch ............................ 198
Talk switch .............................................356
Telephone switches..........................356
Tilt and telescopic steering
control switch .................................... 159
Tire pressure warning reset
switch.................................................... 429
Trunk opener switch ..........................125
Trunk opener main switch ..............126
Vehicle-to-vehicle distance
button ................................................... 232
VSC OFF switch ............................... 267
Window lock switch........................... 167
Windshield wiper de-icer
switch....................................................383
Windshield wipers
and washer switch ...........................215Tachometer ............................................... 95
Tail lights................................................... 206
Light switch........................................... 206
Replacing light bulbs ......................... 461
Talk switch ............................................... 356
Telephone switches ............................. 356
Theft deterrent system
Alarm .......................................................... 83
Double locking system...................... 82
Engine immobilizer system .............. 77
Intrusion sensor and tilt sensor...... 86
Tire inflation pressure ......................... 436
Maintenance data ............................. 546
Tire inflation pressure display
function ............................................... 428
Warning light....................................... 478T