5387-3. Do-it-yourself maintenance
RC200t_RC F_EE(OM24728E)
■How to initialize the tire pressure warning system
Park the vehicle in a safe place and turn the engine switch off.
Initialization cannot be perfor med while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire inflation pressure
level. ( P. 679)
Make sure to adjust the tire pressure to the specified cold tire inflation pressure level. The tire pressure warning system will operate based on this pressure level.
Turn the engine switch to IGNITION ON mode.
Press and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.
Wait for a few minutes with the engine switch in IGNITION ON mode and
then turn the engine switch off.
◆Registering ID codes
The tire pressure warning valve and transmitter is equipped with a unique ID
code. When replacing a tire pressure wa rning valve and transmitter, it is nec-
essary to register the ID code. Have the ID code registered by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
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2
3
4
5
5407-3. Do-it-yourself maintenance
RC200t_RC F_EE(OM24728E)
■Situations in which the tire pressure warning system may not operate properly
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire. • A tire has been replaced with a tire that is not of the specified size.• Tire chains etc. are equipped.
• An auxiliary-supported run-flat tire is equipped. • If a window tint that affects the radio wave signals is installed.• If there is a lot of snow or ice on the vehi cle, particularly around the wheels or wheel
housings. • If the tire inflation pressure is extr emely higher than the specified level. • If tires not equipped with tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air- port or other facility that generates st rong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless communication deviceVehicles with the tire inflation pressure display function: If tire position information is
not correctly displayed due to the radio wave conditions, the display may be corrected by driving and changing the radio wave conditions.
●When the vehicle is parked, the time taken for the warning to start or go off could be
extended.
●When tire inflation pressure declines rapi dly for example when a tire has burst, the warning may not function.
■The initialization operation
●Make sure to carry out initialization af ter adjusting the tire inflation pressure.
Also, make sure the tires are cold before carry ing out initialization or tire inflation pres- sure adjustment.
●If you have accidentally turned the engine swit ch off during initialization, it is not neces-
sary to press the reset switch again as init ialization will restart automatically when the engine switch has been turned to IGNITION ON mode for the next time.
●If you accidentally press the reset switch when initialization is not necessary, adjust the
tire inflation pressure to the specified leve l when the tires are cold, and conduct initial- ization again.
■Warning performance of the tire pressure warning system
The warning of the tire pressure warning syst em will change in accordance with the con- ditions under which it was initialized. For this reason, the system may give a warning even if the tire pressure does not reach a low enough level, or if the pressure is higher than the
pressure that was adjusted to when the system was initialized.
6128-2. Steps to take in an emergency
RC200t_RC F_EE(OM24728E)
■Warning messages
The warning message illustrations used are in tended as examples, and may differ from the image that is actually displaye d on the multi-information display.
■Warning message in radar cruise mode (if equipped)
In the following situations, the warning message may not be displayed even if vehicle-to- vehicle distance decreases:
●When the speed of the preceding vehicle matches or exceeds your vehicle speed
●When the preceding vehicle is traveling at an extremely slow speed
●Immediately after the cruise control speed was set
●When depressing the accelerator pedal
■The LDA (Lane Departure Alert) lane departure warning function (if equipped)
In the following situations, the warning message will not be displayed even if a lane line is crossed.
●When the vehicle speed deviates from the operating range of the LDA system func-tions
●When the lane lines cannot be recognized
■Resetting the message indicating maintenance is required (RC200t)
Make sure to reset the oil change system. ( P. 526)
■Conditions that the tire pressure warning system may not function properly
P. 540
■Warning buzzer
P. 595
720Alphabetical index
RC200t_RC F_EE(OM24728E)
Tilt and telescopic steering
control switch ................................... 220
Tire pressure warning reset
switch................................................... 538
Trunk opener main switch ................171
Trunk opener switch ..........................170
TVD (Torque Vectoring
Differential) switch ......................... 382
Vehicle-to-vehicle distance
button ...................................................302
VSC OFF switch ................................ 351
Window lock switch..........................227
Windshield wiper
and washer switch ......................... 273
Windshield wiper de-icer
switch................................................... 485
Tachometer ..................................... 118, 124
Variable red zone ............................... 129
Tail lights................................................... 264
Light switch........................................... 264
Replacing light bulbs ........................577
Talk switch ............................................... 454
Telephone switches ............................. 454
Theft deterrent system
Alarm ......................................................... 103
Double locking system ..................... 102
Engine immobilizer system ..............92
Intrusion sensor and tilt sensor.....106
Luggage security system .................. 171
Tire inflation pressure ......................... 557
Maintenance data ............................. 679
Tire inflation pressure display
function ............................................... 537
Warning light....................................... 593
T
721Alphabetical index
RC200t_RC F_EE(OM24728E)
Tire pressure warning system ......... 537
Initializing................................................ 537
Installing tire pressure warning
valves and transmitters................ 537
Registering ID codes ...................... 538
Tire pressure warning reset
switch................................................... 538
Warning light .......................................593
Tires ............................................................535
Chains .................................................... 386
Checking ...............................................535
Emergency tire puncture
repair kit ..............................................633
If you have a flat tire ............... 619, 633
Inflation pressure................................ 679
Replacing ................................................ 619
Rotating tires ........................................536
Size............................................................ 679
Snow tires ..............................................387
Spare tire................................................. 619
Tire inflation pressure display
function ................................................ 537
Tire pressure warning
system .................................................. 537
Warning light .......................................593
Tools............................................... 620, 635
Top strap ..................................................... 89
Torque Vectoring Differential
(TVD) ..................................................... 382
Towing ...................................................... 582
Emergency towing ........................... 582
Towing eyelet ......................................585
Trailer towing ...................................... 246
Traction Control (TRC) ..................... 349
Trailer towing ......................................... 246
Transmission........................................... 253
Automatic transmission.................. 253
Driving mode select switch.......... 345
If the shift lever cannot be
shifted from P................................... 258
M mode.................................................. 256
Paddle shift switches............ 255, 256
TRC (Traction Control) ..................... 349
Trip meters ....................................... 118, 124
Trunk ............................................................170
Extending trunk space .................... 503
Luggage security system .................. 171
Smart entry & start system ............. 170
Trunk features ..................................... 498
Trunk grip.................................................. 171
Trunk light ............................................... 172
Trunk opener main switch ................ 171
Trunk opener switch.......................... 170
Trunk storage extension ................ 503
Wireless remote control ................. 170