2012 TOYOTA TUNDRA low oil pressure

189
2
When driving
2-2. Instrument cluster
Gauges and meters
Vehicles with multi-information display
The following gauges, meters and displays illuminate when the
engine switch is in the ON position. Tachometer
Displays the engine speed in revolutions per minute.
Speedometer
Displays the vehicle speed.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Vo l t m e t e r
Displays the charge state.
Engine oil pressure gauge
Displays the engine oil pressure.
Engine coolant temperature gauge
Displays the engine coolant temperature.
Odometer/trip meter switching and trip meter resetting button
Switches between odometer and trip meter displays. Pushing and hold-
ing the button will reset the trip meter when the trip meter is being dis-
played.

570 4-3. Do-it-yourself maintenance
■When replacing wheels
The wheels of your Toyota are equipped with tire pressure warning
valves and transmitters (except for spare tire) that allow the tire pressure
warning system to provide advanced warn ing in the event of a loss in tire
inflation pressure. Whenever wheels are replaced, the tire pressure
warning valves and transmitte rs must be installed. (P. 558)
CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in
the Owner’s Manual, as this may re sult in loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a
tubeless tire. Doing so may result in an accident, causing death or seri-
ous injury.
■When installing the wheel nuts
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing an
accident and resulting in death or serious injury. Remove any oil or
grease from the wheel bolts or wheel nuts.
●Be sure to install the wheel nuts with
the tapered end faci ng inward. Install-
ing the nuts with the tapered end fac-
ing outward can cause wheel to
break and eventually cause a wheel
to come off while driving, which could
lead to an accident resulting in death
or serious injury.Tapered
portion

5
When trouble arises
607
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Toyota dealer as soon as
possible.
■ Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air cond itioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature g auge needle continually points
higher than normal
● Voltmeter continually points higher or lower than normal
(if equipped)
● Engine oil pressure gauge continually points lower than nor-
mal (if equipped)
● Automatic transmission fluid temperature gauge needle con-
tinually points higher than normal (if equipped)
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, s pongy feeling, pedal almost
touches the floor

610 5-2. Steps to take in an emergency
*1: Vehicles without tachometer
*2: The light may come on when the oil level is extremely low. It is not designedto indicate low oil level, and the oil level must be checked using the engine
oil level dipstick.
Have the vehicle inspected immediately.
Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
*1Low engine oil pressure warning light
Indicates that the engine oil pressure is too low*2.
Warning lightWarning light/Details
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transmission control sys-tem; or
• The emission control system.
SRS warning light Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)
(Canada) ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.

690 6-1. Specifications
Warning: The temperature grades for this tire are established for a
tire that is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either sepa-
rately or in combination, can cause heat buildup and possible tire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which a
tire may be inflated, s hown on the sidewall of
the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of trans-
mission, power steering, power brakes, power
windows, power seats, radio and heater, to the
extent that these items are available as factory-
installed equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
* that
follows

738 Alphabetical index
Inflation pressure sensor ....... 558
Replacing .............................. 623
Rotating tires ......................... 557
Size ....................................... 678
Snow tires ............................. 267
Tire pressure warning reset switch ......................... 558
Tire pressure warning
system ........................ 557, 611
Warning light ......................... 611
Tissue pocket ........................... 475
Tools ......................................... 623
Total load capacity................... 265
TOW/HAUL switch ................... 184
Towing
Bumper towing ...................... 283
Dinghy towing........................ 294
Emergency towing................. 601
Fifth wheel trailer ................... 281
Trailer towing......................... 271
Traction control........................ 249
TRAC ......................................... 249
Trip information ....................... 200
Trip meter ................................. 193
Turn signal lights Replacing light bulbs ..... 591, 594
Switch.................................... 186
Wattage ................................. 680
Vanity lights Vanity lights ........................... 489
Wattage ................................. 680
Vanity mirrors........................... 489
Vehicle identification number ................................... 668
Vehicle stability control........... 249
VSC............................................ 249 Warning buzzers
Brake system ........................ 609
Key reminder................... 53, 614
Open door ..................... 611, 613
Seat belt reminder......... 611, 614
Warning lights ABS ....................................... 610
Airbag system ....................... 610
Anti-lock brake system .......... 610
Automatic transmission fluid temperature................. 610
Brake assist system .............. 610
Brake system ........................ 609
Charging system .... ............... 609
Electronic engine control system ................................ 610
Engine oil pressure ............... 609
Four-wheel drive system
warning buzzer ................... 614
Driver’s seat belt ................... 611
Front passenger occupant
classification system ........... 610
Front passenger’s
seat belt .............................. 611
Low brake fluid ...................... 609
Low engine oil pressure ........ 609
Low fuel level ................ 611, 620
Low tire inflation pressure.............................. 611
Malfunction indicator lamp .... 610
Master warning light .............. 611
Open door ............................. 611
Power steering warning light ..................................... 610
Pretensioners ........................ 610
Seat belt reminder light ......... 611
SRS airbags .......................... 610
Tire pressure warning light.... 611
VSC/TRAC ............................ 610
Warning messages .................. 619
V
W

743
What to do if...
■
Warning lights
P. 6 1 1
or(if equipped)
P. 609 P. 610
P. 609 P. 613
P. 610 P. 611
P. 612
or
P. 6 1 0P. 6 1 1
P. 6 1 3P. 612
P. 6 1 0P. 6 1 1
P. 6 1 1P. 612
*: Slip indicator comes on.P. 6 1 2
Brake system warning
lightPower steering warning
light
Low engine oil pressure
warning light
Charging system
warning lightMaster warning light
Malfunction indicator
lampSlip indicator*
ABS warning lightTire pressure warning
light
Open door warning light
Maintenance required
reminder lightLow fuel level warning
light
SRS warning lightDriver’s seat belt reminder
light
Front passenger’s seat belt
reminder light
Low washer fluid
warning light
Automatic transmission
fluid temperature
warning light
The warning message is displayedP. 619If a warning message is displayed