2017 Lexus IS300h trailer

2954-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
WARNING
■Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise contro l 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.
●Roads where there are pede strians, cyclists, etc.
●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 freeways and highways
●When weather conditions are bad enough that they may prevent the sensors from
detecting correctly (fog, snow, sandstorm, heavy rain, etc.)
●When there is rain, snow, etc. on the front surface of the radar sensor or camera sen- sor
●In traffic conditions that require frequent repeated acceleration and deceleration
●When your vehicle is towing a trailer or during emergency towing
●When an approach warning buzzer is heard often

3034-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
■Automatic cancelation of constant speed control mode
Constant speed control mode is automatica lly canceled in the following situations:
●Actual vehicle speed is more than approximately 16 km/h (10 mph) below the set vehi-
cle speed.
●Actual vehicle speed falls below approximately 40 km/h (25 mph).
●VSC is activated.
●TRC is activated for a period of time.
●When the VSC or TRC system is turned off by pressing the VSC OFF switch.
●Pre-collision braking is activated.
If constant speed control mode is automati cally canceled for any other reason, there may
be a malfunction in the syst em. Contact any authorized Lexus retailer or Lexus autho- rized repairer, or an y reliable repairer.
■Warning messages and buzzers for dynamic radar cruise control
Warning messages and buzzers are used to indicate a system malfunction or to inform the driver of the need for ca ution while driving. If a warning message is shown on the
multi-information display, read the message and follow the instructions.
■When the sensor may not be correctly detecting the vehicle ahead
In the case of the following and depending on the conditions, operate the brake pedal
when deceleration of the system is insuff icient or operate the accelerator pedal when
acceleration is required. As the sensor may not be able to correctly detect these types of vehicles, the approach
warning ( P. 300) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same lane
●Vehicles with small rear ends (trailers with no load on board, etc.)
●Motorcycles traveling in the same lane
●When water or snow thrown up by the surrounding vehicles hinders the detecting of
the sensor

3084-5. Using the driving support systems
IS300h_EE(OM53D89E)
WARNING
■To avoid operating the cruise control by mistake
Switch the cruise control off using t he “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 thos e 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

3424-5. Using the driving support systems
IS300h_EE(OM53D89E)
■Conditions under which the BSM function may not function correctly
●The BSM function may not detect vehicles correctly in the following situations:
• When the sensor is misaligned due to a stro ng impact to the sensor or its surround-
ing area
• When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area on the rear bumper
• When driving on a road surface that is wet with standing water during bad weather,
such as heavy rain, snow, or fog • When multiple vehicles are approaching wi th only a small gap between each vehicle
• When the distance between your vehicle and a following vehicle is short
• When there is a significant difference in speed between your vehicle and the vehicle that enters the detection area
• When the difference in speed between your vehicle and another vehicle is changing
• When a vehicle enters a detection area traveling at about the same speed as your vehicle
• As your vehicle starts from a stop, a vehicle remains in the detection area
• When driving up and down consecutive steep inclines, such as hills, dips in the road, etc.
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When vehicle lanes are wide, or when drivin g on the edge of a lane, and the vehicle in an adjacent lane is fa r away from your vehicle
• When towing a trailer (vehicles with towing package)
• When items such as a bicycle carrier are installed on the rear of the vehicle • When there is a significant difference in height between your vehicle and the vehicle
that enters the detection area
• Immediately after the BSM function is turned on
●Instances of the BSM function unnecessarily detecting a vehicle and/or object may
increase in the following situations:
• When the sensor is misaligned due to a stro ng impact to the sensor or its surround- ing area
• When the distance between your vehicle and a guardrail, wall, etc. that enters the
detection area is short • When driving up and down consecutive steep inclines, such as hills, dips in the road,
etc.
• When vehicle lanes are narrow, or when driv ing on the edge of a lane, and a vehicle traveling in a lane other than the ad jacent lanes enters the detection area
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When the tires are slipping or spinning • When the distance between your vehicle and a following vehicle is short
• When a bicycle carrier or other accessory is installed to the rear of the vehicle
• When towing a trailer (vehicles with towing package)

3464-5. Using the driving support systems
IS300h_EE(OM53D89E)
■Conditions under which the RCTA function will not detect a vehicle
The RCTA function is not designed to dete ct the following types of vehicles and/or objects:
●Vehicles approaching from directly behind
●Vehicles backing up in a parking space next to your vehicle
●Guardrails, walls, signs, parked vehi cles and similar stationary objects*
●Small motorcycles, bicycles, pedestrians, etc.*
●Vehicles moving away from your vehicle
●Vehicles approaching from the parking spaces next to your vehicle*
*: Depending on the conditions, detection of a vehicle and/or object may occur.
■Conditions under which the RCTA function may not function correctly
●The RCTA function may not detect vehicles correctly in the following situations:
• When the sensor is misaligned due to a stro ng impact to the sensor or its surround-
ing area • When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area on
the rear bumper
• When driving on a road surface that is wet with standing water during bad weather,
such as heavy rain, snow, or fog • When multiple vehicles are approaching wi th only a small gap between each vehicle
• When a vehicle is approaching at high speed
• When towing a trailer (vehicles with towing package)
●Vehicles that the sensors cannot detect due to
obstructions
• When backing up on a slope with a sharp
change in grade

653
9
9-1. Specifications
Vehicle specifications
IS300h_EE(OM53D89E)
17-inch tires
18-inch tires
■When towing a trailer (vehicles with a towing package)
Add 20.0 kPa (0.2 kgf/cm2 o r b ar, 3 psi) to th e rec omm en ded tire inflation pressure, and drive at speeds below 100 km/h (62 mph).
Tire size225/45R17 91W, 225/45RF17 91W
Tire inflation
pressure
(Recommended cold tire inflation
pressure)
Vehicle speed
Front wheel
kPa (kgf/cm2 or
bar, psi)
Rear wheel
kPa (kgf/cm2 or
bar, psi)
More than 190 km/h (118 mph)290 (2.9, 42)290 (2.9, 42)
190 km/h (118 mph) or
less250 (2.5, 36)250 (2.5, 36)
Wheel size17  7 1/2J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Tire size225/40R18 88Y, 255/35R18 90Y
Tire inflation pressure
(Recommended
cold tire inflation pressure)
250 kPa (2.5 kgf/cm2 or bar, 36 psi)
Wheel size18  8J (225/40R18), 18  8 1/2J (255/35R18)
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)

689Alphabetical index
IS300h_EE(OM53D89E)
Tires ............................................................525
Chains ..................................................... 362
Checking ...............................................525
Emergency tire puncture
repair kit ............................................... 610
If you have a flat tire ............... 610, 625
Inflation pressure................................ 652
Replacing ............................................... 537
Rotating tires ........................................ 526
Size............................................................ 652
Snow tires ..............................................363
Tire pressure warning system .....526
Warning light .......................................578
Tools ........................................................... 537
Top strap ..................................................... 72
Towing ...................................................... 568
Emergency towing........................... 568
Towing capacity ................................. 644
Towing eyelet ........................................571
Trailer towing ...........................................211
Traction battery (hyb rid battery)........ 81
Traction Control (TRC) ..................... 352
Traction motor (electric motor) .........77
Trailer towing ............................................ 211
Transmission........................................... 226
Driving mode select switch.......... 348
Hybrid transmission ..........................226
Paddle shift switches........................ 228
S mode ....................................................229
TRC (Traction Control) ..................... 352
Trip meters ............................................... 105
Trunk............................................................. 151
Luggage security system ................ 153
Smart entry & start system ...............151
Trunk features .....................................488
Trunk grip ................................................ 152
Trunk light ............................................... 154
Trunk opener main switch .............. 153
Trunk opener switch ............................151
Wireless remote control ................. 152
Trunk light ..................................................154
Wattage ................................................. 654
Turn signal lights ................................... 233
Replacing light bulbs ........... 557, 562
Turn signal lever................................. 233
Wattage ................................................. 654