2013 TOYOTA TUNDRA service indicator

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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 moni-
tors the operation of th e emission control system.
■If 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 Toyota dealer
to service the vehicle.
■ Your vehicle may not pass the I/M test:
●When the battery is disconnected or discharged
Readiness codes that are se t during ordinary 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 comes on as a temporary mal-
function and your vehicle may not pass the I/M test.
■ When the malfunction indicator lamp goes off after several
driving trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■ If your vehicle does not pass the I/M test
Contact your Toyota dealer to prepare the vehicle for re-testing.

688 6-1. Specifications
■Toyota does not recommen d gasoline containing MMT
Some gasoline contains octane enhancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adversely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If
this happens, contact your Toyota dealer for service.
■ Toyota does not recommend blende d gasoline (Flex-fuel engine)
Do not use non-specified fuels such as the following.
• Fuels containing methanol.
• Fuels with more than 85% ethanol.
■ Toyota does not recommend the use of after-market fuel additives
(Flex-fuel engine)
Do not use any after-market fuel additives when repeatedly refueling with
E85, as some after-market fuel additives are not compatible with E85.
NOTICE
■Notice on fuel quality
●Do not use improper fuels.
If improper fuels are used the engine will be damaged.
● Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic
converters causing the emission control system to malfunction.
● Gasoline engine: Do not use gasohol other than that stated here.
Other gasohol may cause fuel system damage or vehicle performance
problems.
● Use of unleaded gasoline with an octane rating lower than 87 may result in
engine knocking. Persistent knocking can lead to engine damage and
should be corrected by refueling with higher octane unleaded gasoline.

742 Alphabetical index
Seatback table .......................... 507
Seat beltsAdjusting the seat belt .............77
ALR .........................................81
Automatic Locking Retractor ...............................81
Child restraint system installation ........................... 144
Cleaning and maintaining the seat belts ...................... 532
ELR .........................................81
Emergency Locking
Retractor ...............................81
How to wear your seat belt......77
How your child should wear
the seat belt ..........................82
Pregnant women,
proper seat belt use ..............81
Reminder buzzer ........... 613, 616
Reminder light ....................... 613
Seat belt extenders .................82
Seat belt pretensioners ...........80
Seat heaters.............................. 502
Seat heaters and
ventilators .............................. 504
Seating capacity....................... 266 Seats
Adjustment ........................ 60, 65
Adjustment precautions .... 64, 68
Child seats/child restraint system installation .............. 144
Cleaning ................................ 531
Folding down the rear seat ....................................... 67
Folding down the rear seat precaution ............................. 68
Folding passenger’s seat ........ 63
Front seat adjustment ............. 60
Front seat adjustment precautions ........................... 64
Driver’s seat position memory................................. 70
Head restraint ......................... 73
Properly sitting in the seat..... 120
Raising the bottom cushion ................................. 66
Seat heaters.......................... 502
Seat heaters and ventilators ........................... 504
Service reminder indicators .............................. 195
Shift lever
Automatic transmission ......... 181
If the shift lever cannot be shifted from P ................ 646
Shift lock system ..................... 646
Shopping bag hooks ............... 512
Side airbags ............................. 122
Side doors .................................. 49S