cruise control Lexus IS250 2010 Using The Air Conditioning System And Defogger / LEXUS 2010 IS350 IS250 OWNERS MANUAL (OM53A23U)

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2-1. Driving procedures
Driving the vehicle ........................ 124
Engine (ignition) switch .............. 134
Automatic transmission.............. 139
Manual transmission .................... 145
Turn signal lever ............................ 147
Parking brake ................................. 148
Horn.................................................... 150
2-2. Instrument cluster
Gauges and meters ....................... 151
Indicators and warning
lights................................................. 157
Multi-information display........... 160
2-3. Operating the lights and
windshield wipers
Headlight switch ............................ 165
Fog light switch .............................. 168
Windshield wipers and
washer............................................. 169
Headlight cleaner switch ........... 1742-4. Using other driving systems
Cruise control ................................ 175
Dynamic radar cruise
control............................................. 179
Intuitive parking assist ................. 190
Driving assist systems.................. 196
PCS
(Pre-Collision System) ........... 202
2-5. Driving information
Cargo and luggage ..................... 206
Vehicle load limits ........................ 209
Winter driving tips ........................ 210
Trailer towing .................................. 214
Dinghy towing
(vehicles with an automatic
transmission) ................................ 215
Dinghy towing
(vehicles with a manual
transmission) ................................ 216
2When driving

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Type B Type A
Telephone switch *2P. 302
Cruise control switch 
Dynamic radar cruise control switch

P. 175
P. 179
Distance switch 
P. 179
“DISP” switch P. 161
Talk switch *2P. 302
“DISP” switch P. 161
Distance switch 
P. 179
Cruise control switch 
Dynamic radar cruise control switch

P. 175
P. 179
Automatic transmission Manual transmission
VSC off
switch
 P. 198
ECT switch P. 140
VSC off
switch
 P. 198
ETCS switch P. 146
B
C
: If equipped
*1: Refer to “Navigation System Owner's Manual”.
*2: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

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Installation of a mobile two-way radio system
As the installation of a mobile two-way radio system in your vehicle could affect
electronic systems such as the multiport fuel injection system/sequential multiport
fuel injection system, cruise control system, anti-lock brake system, SRS airbag sys-
tem and seat belt pretensioner system, be sure to check with your Lexus dealer for
precautionary measures or special instructions regarding installation.
Scrapping of your Lexus
The SRS airbag and seat belt pretensioner devices in your Lexus contain explosive
chemicals. If the vehicle is scrapped with the airbags and seat belt pretensioners left
as they are, this may cause an accident such as fire. Be sure to have the systems of
the SRS airbag and seat belt pretensioner removed and disposed of by a qualified
service shop or by your Lexus dealer before you scrap your vehicle.
Perchlorate Material
Special handling may apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate.
Your vehicle has components that may contain perchlorate. These components may
include airbag, seat belt pretensioners, and wireless remote control batteries.

When driving2
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2-1. Driving procedures
Driving the vehicle.................. 124
Engine (ignition) switch ......... 134
Automatic transmission ........ 139
Manual transmission .............. 145
Turn signal lever ....................... 147
Parking brake ........................... 148
Horn ............................................ 150
2-2. Instrument cluster
Gauges and meters ................. 151
Indicators and warning
lights ......................................... 157
Multi-information display ..... 160
2-3. Operating the lights and
windshield wipers
Headlight switch...................... 165
Fog light switch ........................ 168
Windshield wipers and
washer ..................................... 169
Headlight cleaner switch....... 1742-4. Using other driving
systems
Cruise control........................... 175
Dynamic radar cruise
control ...................................... 179
Intuitive parking assist ........... 190
Driving assist systems ............ 196
PCS
(Pre-Collision System) ...... 202
2-5. Driving information
Cargo and luggage ............... 206
Vehicle load limits .................. 209
Winter driving tips .................. 210
Trailer towing ........................... 214
Dinghy towing
(vehicles with an
automatic transmission)..... 215
Dinghy towing
(vehicles with a
manual transmission) .......... 216

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2-1. Driving procedures
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When driving
■When the “-” shift paddle switch is operated in the D position
When the “-” shift paddle switch is operated in the D position, a shift range will be
automatically selected. The highest gear of the first shift range will be one gear
lower than the gear in use during normal D position driving.
■Automatic deactivation of shift range selection in the D position
Shift range selection in the D position will be deactivated in the following situations:
●When the vehicle comes to a stop
●When range 6 is selected and the accelerator pedal is depressed
●If the accelerator pedal is depressed for more than a certain period of time
■To protect automatic transmission
A function is adopted that automatically selects a higher shift range when the fluid
temperature is high.
■Gear position display when driving
The current gear is displayed on the multi-information display. (P. 1 6 3 )
■Downshifting restrictions warning buzzer
To help ensure safety and driving performance, downshifting operation may some-
times be restricted. In some circumstances, downshifting may not be possible even
when the shift lever or shift paddle switch is operated. (The warning buzzer will
sound twice.)
■When driving with the cruise control system or dynamic radar cruise control sys-
tem
Engine braking will not occur during shift range selection in the D position or S
mode, even when downshifting to range 5 or 4. (P. 175, 179)
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the “ENGINE START STOP” switch is
turned off after driving in snow mode.
■If the shift lever cannot be shifted from P
P. 5 0 3

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2-2. Instrument cluster
■Indicators
The indicators inform the driver of the operating state of the vehi-
cle’s various systems.
Turn signal indicator
(P. 1 4 7 )
(vehicles with
an automatic
transmission)
“ECT SNOW” indicator
(P. 1 4 0 )
Headlight high beam indi-
cator (P. 1 6 5 )
(vehicles with
a manual
transmission)
“ETCS SNOW” indicator
(P. 1 4 6 )
(U.S.A.)
Headlight indicator
(P. 1 6 5 )
(vehicles with
an automatic
transmission)
“ECT PWR” indicator
(P. 1 4 0 )
(Canada)
Tail light indicator
(P. 1 6 5 ) Cruise control indicator
(P. 1 7 5 )
Front fog light indicator
(P. 1 6 8 )
(if equipped)
“AFS OFF” indicator
(P. 166)
(vehicles with an automatic trans-
mission)
Shift position and shift range indica-
tors (P. 1 3 9 )
(if equipped)
Intuitive parking assist
indicator (P. 1 9 0 )
Slip indicator (P. 1 9 7 )
VSC off indicator
(P. 1 9 8 )
SRS airbag on-off indica-
tor (P. 1 0 4 )
*
*
*
*

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2
When driving
2-4. Using other driving systems
Cruise control
Use the cruise control to maintain a set speed without using the accelera-
tor.
Indicator
Cruise control switch
■Set the vehicle speed
Turn the “ON-OFF” button on.
Push the button once more to
deactivate the cruise control.
Accelerate or decelerate to the
desired speed and press the
lever down to set the cruise
control speed.
STEP1
STEP2

: If equipped

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2-4. Using other driving systems
■Adjusting the speed setting
Increase speed
Decrease speed
Hold the lever until the desired
speed setting is obtained.
Fine adjustment of the set
speed (approximately 1.0 mph
[1.6 km/h]) can be made by
lightly pressing the lever up or
down and releasing it.
■Canceling and resuming regular acceleration
Cancel
Push the lever towards you to
cancel cruise control.
The speed setting is also can-
celed when the brakes are
applied or the clutch (manual
transmission) is depressed.
Resume
To resume cruise control and
return to the set speed, push the
lever up.

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2-4. Using other driving systems
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When driving
■Cruise control can be set when
●Vehicles with an automatic transmission: the shift lever is in the D position or S
position. However, it cannot be set if any of the ranges 1 through 3 has been
selected.
●Vehicle speed is more than approximately 25 mph (40 km/h).
■Accelerating
The vehicle can be accelerated normally. After acceleration, the set speed
resumes.
■Automatic cruise control cancellation
The set speed is automatically cancelled in any of the following situations.
●Actual vehicle speed falls more than 10 mph (16 km/h) below the preset vehicle
speed
At this time, the memorized set speed is not retained.
●Actual vehicle speed is below 25 mph (40km/h)
●VSC is activated
■If the cruise control indicator light flashes
Turn the “ON-OFF” button off once, and then reactivate the system.
If the cruise control speed cannot be set or if the cruise control cancels immediately
after being activated, there may be a malfunction in the cruise control system. Have
the vehicle inspected by your Lexus dealer.

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2-4. Using other driving systems
CAUTION
■To avoid operating the cruise control by mistake
Keep the “ON-OFF” button off 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 control of the vehicle being lost and could cause an accident
resulting in death or serious injury.
●In heavy traffic
●On roads with sharp bends
●On slippery roads, such as those covered with rain, ice or snow
●On steep hills
●On winding roads
●When your vehicle is towing a trailer