2016 LEXUS IS250 service indicator

303
4-2. Maintenance
4

Maintenance and care Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include
OBD (On Board Diagnostics) checks. The OBD system monitors the oper-
ation of the emission control system.
nIf the malfunction indicator lamp comes on
The OBD system determines that a problem 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.
nYour vehicle may not pass the I/M test:
lWhen the battery is disconnected or discharged
Readiness codes that are set during ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.
lWhen the fuel tank cap is loose
The malfunction indicator lamp comes on as a temporary mal-
function and your vehicle may not pass the I/M test.
nWhen the malfunction indicator lamp goes off after several driv-
ing trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
nIf your vehicle does not pass the I/M test
Contact your Lexus dealer to prepare the vehicle for re-testing.

448
6-1. Specifications
nLexus does not recommend gasoline containing MMT
Some gasoline contains octane enhancing additive called MMT (Methylcyclopen-
tadienyl 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 instrument cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
NOTICE
nNotice on fuel quality
lDo not use improper fuels. If improper fuels are used the engine will be damaged.
lDo not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic convert-
ers causing the emission control system to malfunction.
lDo not use gasohol other than that stated here.
Other gasohol may cause fuel system damage or vehicle performance problems.
lIS250: Use of unleaded gasoline with an octane rating lower than 91 may result
in engine knocking. Persistent knocking can lead to engine damage and should
be corrected by refueling with higher octane unleaded gasoline.
lIS350: Use of unleaded gasoline with an octane rating lower than 91 may result
in engine knocking and significantly reduced performance. Persistent knocking
can lead to engine damage and should be corrected by refueling with higher
octane unleaded gasoline.
nFuel-related poor driveability
If after using a different type of fuel, poor driveability is encountered (poor hot start-
ing, vaporization, engine knocking, etc.), discontinue the use of that type of fuel.
nWhen refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle's paint.

482
Alphabetical index
Parking assist sensors ..........................180
Parking brake .......................................... 140
Parking lights
Replacing light bulbs........................ 363
Switch ....................................................... 156
Wattage.................................................. 445
PCS ............................................................. 192
Personal lights
Switch ...................................................... 249
Power outlet............................................265
Power windows ........................................ 69
Pre-collision system.............................. 192
Radar cruise control ............................. 170
Radiator ..................................................... 319
Radio .......................................................... 222
RDS ............................................................ 223
Rear sunshade ....................................... 273
Rear turn signal lights
Replacing light bulbs........................ 363
Wattage.................................................. 445
Rear view mirror
Compass ............................................... 287
Rear window defogger........................ 218
Replacing
Electronic key battery...................... 345
Fuses ........................................................ 347
Light bulbs............................................. 363
Reporting safety defects for
U.S. owners .......................................... 470
Scuff lighting ............................................247
Seat belts
Adjusting the seat belt ........................ 57
Automatic locking retractor ........... 58
Child restraint system
installation ............................................ 104
Cleaning and maintaining
the seat belts .................................... 296
Emergency locking retractor......... 58
How to wear your seat belt ............ 56
How your child should wear
the seat belt.......................................... 59
Pregnant women,
proper seat belt use ........................ 58
Reminder light..................................... 385
Seat belt extenders.............................. 59
Seat belt pretensioners ...................... 57
Seat heaters ................................. 266, 269
Seat position memory............................ 52
Seat ventilators ...................................... 269
Seating capacity......................................199
Seats
Adjustment ...............................................46
Adjustment precautions .................... 47
Child seats/child restraint
system installation............................ 104
Cleaning ................................................ 295
Driver’s seat position memory ...... 48
Front passenger seat position
memory ..................................................52
Head restraint .........................................54
Properly sitting in the seat.................82
Seat heaters ............................. 266, 269
Ventilated seats.................................. 269
Service reminder indicators ............ 148
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