2016 LEXUS IS250 snow chains

190
2-4. Using other driving systems
nHill-start assist control is operational when
lThe shift lever is in the D or S position.
lThe brake pedal is not depressed.
nEPS operation sound
When the steering wheel operates, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
nReduced 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
nThe ABS does not operate effectively when
lThe limits of tire gripping performance have been exceeded.
lThe vehicle hydroplanes while driving at high speed on the wet or slick road.
nStopping 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.
lWhen driving on dirt, gravel or snow-covered roads
lWhen driving with tire chains
lWhen driving over bumps in the road
lWhen driving over roads with potholes or roads with uneven roads

201
2-5. Driving information
2

When driving
Selecting snow chains
Snow chains can be mounted on 16- and 17-inch tires. They cannot be
mounted on 18-inch tires. Use the correct snow chain size when mount-
ing the snow chains. Chain size is regulated for each tire sizes.
Side chain
(0.12 in. [3 mm] in diameter)
Cross chain
(0.16 in. [4 mm] in diameter)
Regulations on the use of snow chains
lRegulations regarding the use of tire chains vary according to location
and type of road. Always check local regulations before installing
chains.
lInstall the chains on the rear tires.
lRetighten the chains after driving 1 /4 ⎯ 1 /2 mile (0.5 ⎯ 1.0 km).
nWhen driving the vehicle
Accelerate the vehicle slowly and drive at a reduced speed suitable
to road conditions.
nWhen parking the vehicle
Park the vehicle and move the shift lever to P (automatic transmis-
sion) or R (manual transmission) without setting the parking brake.
The parking brake may freeze up, preventing it from being released.

202
2-5. Driving information
nSnow chain installation
Observe the following precautions when installing and removing chains.
lInstall and remove tire chains in a safe location.
lInstall tire chains on the rear tires only. Do not install tire chains on front tires.
lInstall the tire chains on rear tires as tightly as possible. Retighten chains after
driving 1 /4 - 1 /2 mile (0.5 - 1.0 km).
lInstall tire chains following the instructions provided in the accompanying
instructions.
CAUTION
nDriving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in a loss of vehicle control and cause death or serious
injury.
lUse tires of the size specified for your vehicle.
lMaintain the recommended level of air pressure.
lDo not drive in excess of 75 mph (120 km/h), regardless of the type of snow tires
being used.
lUse snow tires on all, not just some wheels.
nDriving with snow chains
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in the vehicle being unable to be driven safely, and may
cause death or serious injury.
lDo not drive in excess of the speed limit specified for the tire chains being used,
or 30 mph (50 km/h), whichever is lower.
lAvoid driving on bumpy road surfaces or over potholes.
lAvoid sudden turns and braking, as use of chains may adversely affect vehicle
handling.
lSlow down sufficiently before entering a curve to ensure that vehicle control is
maintained.

203
2-5. Driving information
2

When driving
NOTICE
nRepairing or replacing snow tires
Request repairs of and obtain replacement snow tires from Lexus dealers or legiti-
mate tire retailers.
This is because the removal and attachment of snow tires affects the operation of
the tire air pressure sensor.
nFitting tire chains
The tire air pressure sensor may not function correctly when tire chains are fitted.

331
4-3. Do-it-yourself maintenance
4

Maintenance and care
nWhen to replace your vehicle’s tires
Tires should be replaced if:
lYou have tire damage such as cuts, splits, cracks deep enough to expose the
fabric or bulges indicating internal damage
lA tire goes flat repeatedly or cannot be properly repaired due to the size or
location of a cut or other damage
If you are not sure, consult with your Lexus dealer.
nReplacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered,
the tire pressure warning system will not work properly. After driving for about 20
minutes, the tire pressure warning light comes on after blinking for 1 minute to indi-
cate a system malfunction.
nTire life
Any tire over 6 years old must be checked by a qualified technician even if they
have seldom or never been used or damage is not obvious.
nIf the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
nLow profile tires (models not equipped with 16-inch tires)
Generally, low profile tires will wear more rapidly and tire grip performance will be
reduced on snowy and/or icy roads when compared to standard tires. Be sure to
use snow tires or tire chains* on snowy and/or icy roads and drive carefully at a
speed appropriate for road and weather conditions.
*: Tire chains cannot be mounted on 18-inch tires.
nMaximum load of tire
Check that the maximum load of the replaced tire is greater than 1 /2 of the Gross
Axle Weight Ratings (GAWR) of either the front axle or the rear axle, whichever is
greater.
As for the maximum load of the tire, see the load limit at maximum cold tire inflation
pressure mentioned on the sidewall of the tire, and as for the Gross Axle Weight
Ratings (GAWR), see the Certification Label. (→P. 3 3 6 , 4 4 9 ) .

388
5-2. Steps to take in an emergency
nIf the tire pressure warning system is inoperative
The tire pressure warning system will be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
lIf tires not equipped with tire pressure warning valves and transmitters are used
lIf the ID code on the tire pressure warning valves and transmitters is not regis-
tered in the tire pressure warning computer
lIf a different set of tires has been selected using the satellite switch.
lIf the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher
The tire pressure warning system may be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
lIf electronic devices or facilities using similar radio wave frequencies are nearby
lIf a radio set at similar frequencies is in use in the vehicle
lIf there is a lot of snow or ice on the vehicle, in particular around the wheels or
wheel housings
lIf non-genuine Lexus wheels are used (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)
lIf tire chains are used
nIf the tire pressure warning light comes on after blinking for 1 minute frequently
If the tire pressure warning light comes on after blinking for 1 minute frequently
when the “ENGINE START STOP” switch is turned to IGNITION ON mode, have
it checked by your Lexus dealer.

5

When trouble arises
409
5-2. Steps to take in an emergency
nThe compact spare tire
lThe compact spare tire is identified by the label “TEMPORARY USE ONLY”
on the tire sidewall.
Use the compact spare tire temporarily only in an emergency.
lMake sure to check the tire pressure of the compact spare tire. (→P. 43 9 )
nWhen using the compact spare tire
As the compact spare tire is not equipped with the tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be warned. Also, if you
replace the compact spare tire after the tire pressure warning light comes on, the
light remains on.
nIf you have a flat rear tire on a road covered with snow or ice
Install the compact spare tire on the front of the vehicle. Perform the following steps
and fit tire chains to the rear tires.
Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the vehi-
cle.
Fit tire chains to the rear tires.
nAfter completing the tire change
The tire pressure warning system must be reset. (→P. 3 2 7 )
STEP1
STEP2
STEP3

484
Alphabetical index
Tachometer
Tacho indicator..................................... 142
Tachometer ............................................ 142
Tail lights
Switch ....................................................... 156
Talk switch*
Telephone switch*
Theft deterrent system
Alarm .......................................................... 79
Engine immobilizer system .............. 77
Theft prevention labels ........................... 81
Tire inflation pressure .........................336
Tire information
Glossary................................................. 454
Size .............................................................451
Tire identification number ...............451
Uniform tire quality grading ......... 452
Tires
Chains .....................................................200
Checking ............................................... 325
If you have a flat tire ..........................404
Inflation pressure................................ 336
Inflation pressure sensor................ 327
Information............................................ 449
Replacing ...............................................404
Rotating tires ........................................ 325
Size ........................................................... 439
Snow tires ..............................................200
Tools ...........................................................404
Total load capacity ................................ 199
Towing
Dinghy towing ........................205, 206
Emergency towing ............................373
Trailer towing ...................................... 204
TRAC ......................................................... 186
Traction control...................................... 186
Transmission shift switches.................134
Trip meter ..................................................142
Trunk
Extending a space .............................275
Opener ...................................................... 43
Trunk light
Trunk light ................................................. 44
Wattage ................................................. 445
Turn signal lights
Replacing light bulbs ....................... 363
Switch ........................................................ 139
Wattage ................................................. 445
Vanity lights
Vanity lights.......................................... 258
Wattage ................................................. 445
Vanity mirrors ........................................ 258
VDIM.......................................................... 186
Vehicle dynamics integrated
management ........................................ 186
Vehicle identification number...........431
Vehicle stability control ...................... 186
Ventilators ............................................... 269
VSC ............................................................ 186
T
V