
4716-3. Do-it-yourself maintenance
6
Maintenance and care
LS600hL_U(OM50E41U)
■Checking interval
Front air conditioning filter
Inspect and replace the air conditioning fil ter when a message is appeared on the
multi-information display. In dusty areas or areas with heavy traffic flow, early
replacement may be required. (For sche duled maintenance information, please
refer to the “Owner’s Manual Supplement” or “Scheduled Maintenance”.)
Rear air conditioning filter
Replace every 9000 miles (15000 km).
■If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
■After changing the front air conditioning filter
The front air conditioning filter maintenanc e data should be reset. Perform the fol-
lowing procedures:
Turn the power switch to ON mode.
Press and hold (on the air conditioning panel) for 4 seconds or more.
A buzzer will sound to indicate that the maintenance data has been successfully
reset.
■Rear air conditioning filter
If it is necessary to clean or replace the filter, contact your Lexus dealer.
■Climate control seat filter
Filters are installed in the seats. When it is necessary to clean or replace the filters,
contact your Lexus dealer.
1
2
NOTICE
■When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the system.

4987-2. Steps to take in an emergency
LS600hL_U(OM50E41U)
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors,
side impact sensors (front door), side impact sensors (front), side impact sensors
(rear door) side impact sensors (rear), driver ’s seat position sensor, driver’s seat belt
buckle switch, front passenger occupant classification system (ECU and sensors),
“AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front passenger’s seat
belt buckle switch, seat belt pretensioner s and force limiters, airbags, interconnect-
ing wiring and power sources. ( P. 44)
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sen-
sor may cause the warning light to flash an d the warning buzzer to sound even if a
passenger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■Electric power steering system warning light
When the 12-volt battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust it to the appropriate level. Pushing the
tire pressure warning reset switch will not turn off the tire pressure warning light.

5057-2. Steps to take in an emergency
7
When trouble arises
LS600hL_U(OM50E41U)
■The LKA (Lane-Keeping Assist) lane departure warning function (if equipped)
In the following cases, 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 LKA system
functions
●When the lane lines cannot be recognized
●When the steering wheel is turned as far as necessary to cause the vehicle to
change lanes
■System warning lights
The master warning light does not come on or flash in the following cases. Instead, a
separate system warning light will come on or flash along with the message shown
on the multi-information display.
●Malfunction of the brake system
The brake system warning light (red indicator) comes on. ( P. 4 9 3 )
●Malfunction of the regenerative brake syst em, electronically controlled brake sys-
tem or electric parking brake
The brake system warning light (yellow indicator) comes on. ( P. 495)
●Malfunction of the ABS
The ABS warning light comes on. ( P. 4 9 4 )
●Malfunction of the charging system
The charging system warning light comes on. ( P. 4 9 4 )
●Indicates that a door or the trunk is not fully closed
The open door warnin g light comes on. (P. 4 9 6 )
●High engine coolant temperature
The needle of the engine coolant temperature gauge enters the red zone.
( P. 5 3 0 )
■If “Maintenance required ” is shown (U.S.A. only)
Perform the necessary maintenance.
Please reset the message after the maintenance is performed. ( P. 4 2 6 )
■If “Hybrid System Overheat” is shown
Coping method: P. 5 3 0
This message may be displayed when driv ing under severe operating conditions.
(For example, when driving up a long steep hill.)
■Warning buzzer
In some cases, the buzzer may not be hear d due to ambient noise or sounds from the
audio system.

609Alphabetical index
LS600hL_U(OM50E41U)
Pre-Collision System (PCS) ............ 296Function ..................................................296
Pre-collision braking off switch................................................... 298
Warning light ...................................... 495
Radar cruise control (dynamic radar cruise control) ........................ 257
Radiator .................................................... 447
Rear air conditioning system ............ 351
Rear Cross Traffic Alert ..................... 315
Rear door sunshades .......................... 398
Rear seat Adjustment ............................................. 162
Climate control seats ...................... 388
Seat position memory........................ 177
Rear seat entertainment system
*
Rear seat relaxation system ............... 167
Rear side marker lights ...................... 234 Light switch ........................................... 234
Replacing light bulbs ......................... 481
Welcome light illumination cont rol ......................... 126
Rear sunshade ....................................... 395 Operation ............................................. 395
Reverse operation feature.............397 Rear turn signal lights .......................... 227
Replacing light bulbs .........................481
Turn signal lever ..................................227
Rear view mirror Inside rear view mirror..................... 183
Outside rear view mirrors ............. 185
Rear window defoggers .................... 358
Refueling...................................................249 Capacity.................................................540
Fuel types...................................249, 540
If the fuel filler door cannot be opened ......................... 252
Opening the fuel tank cap .............. 251
Regenerative braking.............................78
Remote Touch ....................................... 330
Remote Touch screen........................ 330
Replacing Electronic key battery ......................472
Fuses ........................................................ 474
Light bulbs...............................................481
Tires ......................................................... 506
Reporting safety defects for U.S. owners ...................................576
Resetting the message indicating maintenance
is required .............................................426
Retractable table .................................. 393
Road accident cautions ........................ 85
Run-flat tires ............................................. 515
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

612Alphabetical index
LS600hL_U(OM50E41U)
SwitchesAutomatic High Beam switch................................................... 238
Brake hold switch ................................231
BSM (Blind spot monitor) main switch ....................................... 308
Climate control seat switches .....387
Cruise control switch.......................253
“DISP” button ........................................ 106
Door lock switches ............................ 145
Driving mode select switch ......... 283
Driving position memory switches ................................................. 172
Dynamic radar cruise control with full-speed range .................... 257
Emergency flashers switch .......... 484
EV drive mode switch ....................... 221
Fog light switch ................................... 243
Garage door opener switches .............................................. 403
Headlight cleaner switch ...............248
Heated steering wheel switch................................................... 385
Ignition switch ....................................... 216
Lexus night view switch ................... 318
Light switch ........................................... 234
LKA (Lane-Keeping Assist) switch.................................................... 275
Moon roof switches........................... 192 Outside rear view mirror
switches ............................................... 185
Parking brake switches .................. 228
Power door lock switch ...................145
Power switch ......................................... 216
Power trunk lid......................................149
Power window switches ................. 189
Pre-collision braking off switch............................................. 298
Rear door sunshade switch..........398
Rear seat position memory ............ 177
Rear sunshade switch .....................395
Rear window and outside rear view mirror defoggers
switch ...................................................358
Snow mode switch ........................... 225
“SOS” button .........................................410
Tilt and telescopic steering control switch ..................182
Tire pressure warning reset switch ................................................... 456
Trunk closer switch............................ 150
Trunk opener main switch ............. 150
Trunk opener switch ..........................149
Vehicle-to-vehicle distance button ................................................... 260
VSC OFF switch ................................. 291
Window lock switch ......................... 189
Windshield wipers and washer switch ......................... 244

613Alphabetical index
LS600hL_U(OM50E41U)
Tachometer ............................................... 99
Tail lights................................................... 234Light switch ........................................... 234
Replacing light bulbs ......................... 481
Welcome light illumination control ................................................... 126
Theft deterrent system Alarm...........................................................90
Immobilizer system ............................. 88
Tire inflation pressure ......................... 464 Maintenance data ............................. 546
Tire inflation pressure display function .................................................108
Warning light ....................................... 497
Tire information ..................................... 553 Glossary ................................................ 559
Size ........................................................... 555
Tire identification number............. 554
Uniform Tire Quality Grading...............................................557
Tire pressure warning system ......... 455 Function ................................................. 455
Initializing............................................... 455
Installing tire pressure warning valves and transmitters ............... 455
Registering ID codes .......................457
Tire pressure warning reset switch................................................... 456
Warning light ....................................... 497 Tires ........................................................... 454
Chains ......................................................327
Checking ............................................... 454
If you have a flat tire ...............506, 515
Inflation pressure................................ 546
Information............................................553
Replacing .............................................. 506
Rotating tires ........................................ 454
Run-flat tires .......................................... 515
Size ........................................................... 546
Snow tires .............................................. 328
Spare tire............................................... 506
Tire inflation pressure display function................................................. 108
Tire pressure warning system .....455
Warning light ....................................... 497
Tools ................................................ 507, 516
Top tether strap ........................................ 72
Total load capacity................................. 213
Towing Dinghy towing ....................................... 215
Emergency towing ...........................486
Towing eyelet ......................................489
Trailer towing......................................... 214
TRAC (Traction Control)................. 289
Traction battery (hybrid battery) ........ 81
Traction motor (electric motor)......... 76
Trailer towing ........................................... 214
Transmission ...........................................223 Driving mode select switch .......... 283
Hybrid transmission ......................... 223
If the shift lever cannot be shifted from P .....................................519
S mode.................................................... 224
T