2018 TOYOTA TUNDRA service indicator

4817-2. Maintenance
7
Maintenance and care
Emission inspection and maintenance (I/M)
programs
The OBD system determines that a problem exists somewhere in th e
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.
● When the battery is disc onnected or discharged
Readiness codes that are set duri ng ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.
● When the fuel tan k cap is loose
The malfunction indicator lamp comes on indicating a temporary
malfunction and your vehicle m ay not pass the I/M test.
The error code in th e OBD system will not be cleared unless the vehi-
cle is driven 40 or more times.
Contact your Toyota dea ler to prepare the vehicle for re-testin g.
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnostics) checks. The OBD system
monitors the operation of t he emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M test in the following situations:
When the malfunction indicator lamp still remains on after sev-
eral driving trips
If your vehicle does not pass the I/M test

6129-1. Specifications
■Non-recommendation of the use of blended gasoline (gasoline engine)
● If you use gasohol in your vehicle, be sure that it has an octa ne rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methan ol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an 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 adv ersely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If this
happens, contact your Toyota dealer for service.
■ Non-recommendation of the use of after-market fuel additives (Flex-fuel
vehicles)
Do not use any after-market fuel additives when repeatedly refu eling with
E85, as some after-market fuel additives are not compatible wit h E85.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time whi le accelerat-
ing or driving uphill. This is normal and there is no need for concern.
●
Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from any pump labeled
E30, E50, E85 (which are only some
examples of fuel containing more than
15% ethanol).
DO NOT use gasoline contain-
ing more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

666Alphabetical index
ReplacingFuses .................................... 518
Light bulbs ............................ 521
Tires ...................................... 565
Wireless remote control battery ................................ 516
Reporting safety defects
for U.S. owners ...................... 634
Resetting the message indicating maintenance
is required .............................. 477
Seat belts.................................... 32 Adjusting the seat belt ............ 33
Automatic Locking Retractor............................... 34
Child restra int system
installation ............................ 60
Cleaning and maintaining the seat belt ........................ 474
Emergency Locking
Retractor............................... 34
How to wear your seat belt ..... 32
How your child should wear the seat belt .......................... 34
Pregnant women, proper seat belt use ......................... 35
Reminder light and buzzer .... 548
Seat belt extender................... 34
Seat belt pretensioners ........... 33
SRS warning light ................. 547
Seat heaters ............................. 426
Seat position memory ............. 128
Seat ventilators ........................ 426
Seating capacity ...................... 171 Seats, Front.............................. 123
Adjustment............................ 123
Adjustment precautions ........ 125
Child seats/child restraint system installation . ............... 60
Cleaning ............................... 473
Driving position memory ....... 128
Head restraints ..................... 132
Power easy access system .......... ...................... 128
Properly sitting in the seat ...... 30
Seat heaters ......................... 426
Seat position memory ........... 128
Seat ventilators ..................... 426
Seats, Rear ............................... 126 Adjustment precautions ........ 127
Child seats/child restraint
system installation . ............... 60
Cleaning ............................... 473
Head restraints ..................... 132
Raising the bottom cushion ............................... 126
Sensor Automatic headlight system .......... ...................... 209
Automatic High Beam system .......... ...................... 211
Camera sensor ..................... 226
Inside rear view mirror .......... 141
Intuitive parking assist .......... 270
LDA
(Lane Departure Alert) ....... 244
Radar sensor ........................ 226
Service reminder indicators ..... 90
Shift lever ................................. 197
Automatic transmission ........ 197
If the shift lever cannot be shifted from P .... 201
Shift lock system ..................... 201
Side airbags ............................... 39
Side doors ................................ 114
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