2006 LEXUS LS430 service indicator

255
4-2. Maintenance
4
Maintenance and care
Emission inspection and maintenance (I/M) programs
Some states have vehicle emission in spection programs which include OBD
(On-Board Diagnostics) checks.

The OBD system monitors the operation of the emission control system.
■ If the malfunction indicator lamp comes on
The OBD system determines that a pr
oblem exists somewhere in the
emission control system. Your vehicle may not pass the I/M test and
may need to be repaired. Contact your Lexus dealer to service the
vehicle.
■ Y
our vehicle may not pass the I/M test:
●When the battery is disconnected or discharged
Readiness codes that are set during or
dinary driving are erased.
Also, depending on your driving habits, the readiness codes may not
be completely set.
●When the fuel tank cap is loose
The malfunction indicator lamp co mes on as tempor
ary malfunction
and your vehicle may not pass the I/M test.
■ When the malfunction indicator lamp goes off after se
veral driving
trips
The error code in the OBD system wi ll not be clear
ed unless the vehi-
cle is driven 40 or more times.
■ If y
our vehicle does not pass the I/M test
Contact your Lexus dealer to prep ar
e the vehicle for re-testing.

374
6-1. Specifications
■Lexus recommends the use of gasoline containing detergent additives
●Lexus recommends the use of gasoline that contains detergent additives to
avoid build-up of engine deposits.
●All gasoline sold in the US contains detergent additives to clean and/or keep
clean intake systems.
■Lexus recommends the use of cleaner burning gasoline
Cleaner burning gasoline, including reform ulated gasoline that conta
ins oxygen-
ates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in many
ar

eas.
Lexus recommends the use of cleaner burning gasoline and appropriately blended
r
eformulated gasoline. These types of gasoline provide excellent vehicle perfor -
mance, reduce vehicle emissions, and improve air quality.
■Lexus does not recommend blended gasoline
●Lexus allows the use of oxygenate blended gasoline where the oxygenate con -
tent is up to 10% ethanol or 15% MTBE.
●If you use gasohol in your Lexus, be sure that it has an octane rating no lower
than 87.
●Lexus DOES NOT recommend the use of gasoline containing methanol.
■Lexus does not recommend gasoline containing MMT
Some gasolines contain an octane enhanc
ing additive called MMT (Methylcyclo-
pentadienyl Manganese Tricarbonyl).
Lexus DOES NOT recommend the use of gasoline that contains MMT. If fuel con -
taining MMT is used, your emission control system may be adversely affected.
The Malfunction Indicator Lamp on the inst rum
ent cluster may come on. If this hap-
pens, contact your Lexus dealer for service.

397
Alphabetical index
ReplacingAir conditioning filter ....................... 289
Blade type fuses ................................. 298
Cartridge type fuses ........................ 309
Light bulbs .............................................. 313
Wireless remote control 
battery.................................................. 295
Seat belts Adjusting the belt .................................. 34
Automatic Locking
Retractor (ALR) .................................... 36
Child restraint system 
installation .............................................. 73
Cleaning ................................................ 248
Emergency Locking 
Retractor (ELR) ................................. 36
How to wear your seat belt.............. 34
How your child should 
wear the seat belt............................... 37
Pregnant women, 
proper seat belt use.......................... 37
Reminder light....................................... 331
Seat belt extenders .............................. 38
Seat belt pretensioners...................... 36
Seat heaters.............................................. 218
Seats Cleaning ................................................ 248
Child seats/child restraint 
system installation ..............................76
Driving position memory .................. 25
Head restraint .......................................... 31
Properly sitting in the seat................ 58
Rear seat position memory .............. 29
Refleshing rear seat switches ....... 222Seat adjustment .....................................
22
Seat adjustment precautions........... 24
Seat heaters ........................................... 218
Ventilated seats .................................. 220
Selector lever ............................................ 98
Automatic transmission .................... 98
If you cannot shift selector 
lever.......................................................354
Service reminder indicators.............. 105
Shift lock system .................................... 354
Side airbags.................................................. 61
Side marker lights Switch.......................................................... 110
Wattage .................................................. 372
Side mirror.................................................. 43
Adjusting and folding.......................... 43
Driving position memory .................. 25
Smart access system Smart access system .............................. 5
Warning messages........................... 334
Snow tires.................................................... 151
Spare tire .................................................. 347
Spark plug................................................ 367
Specifications ......................................... 364
Speedometer .......................................... 103
SRS airbag SRS airbags.............................................. 60
Warning light ....................................... 334
Steering wheel Adjusting ................................................... 40
Audio switches..................................... 195
Driving position memory .................. 25
Stop lights Wattage .................................................. 372
Stuck If your vehicle becomes stuck ...... 361
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