2015 TOYOTA TACOMA check engine

189
2-4. Using other
driving systems
2
When driving
■Operating tips
The system will operate when the shift lever is in a position other than P.
However, to make effective use of the system it is recommended that the
shift lever be shifted to 2 or L.
■ The system will not operate when
●The front-wheel drive control switch is in the H2 or H4 position.
● The rear differential is locked.
■ The downhill assist control system indicator light flashes when
● The shift lever is in the N position.
● The front-wheel drive control switch is in the H2 or H4 position.
● The rear differential is locked.
■ If the brake system overheats
The system will cease operation and a buzzer will sound to alert the driver.
Stop the vehicle in a safe place. (Ther e is no problem with continuing normal
driving.)
■ System malfunction
●The downhill assist control system indicator does not come on when the
engine switch is turned to the ON position.
● The downhill assist control system indicator does not come on when the
DAC switch is pressed.
In the above cases have your vehicle checked by your Toyota dealer.
CAUTION
■Do not rely excessively on the downhill assist control system
It may not be able to maintain a low speed over road surfaces on which slid-
ing can easily occur, such as extremely steep slopes or icy or muddy roads.

201
2-5. Driving information
2
When driving
NOTICE
■
To prevent the water damage
●Take all necessary safety measures to ensure that water damage to the
engine or other components does not occur.
● Water entering the engine air intake will cause severe engine damage.
● Water entering the automatic transmission will cause deterioration in shift
quality, locking up of your transmission accompanied by vibration, and ulti-
mately damage.
● Water can wash the grease from wheel bearings, causing rusting and pre-
mature failure, and may also enter the differentials, transmission and
transfer case, reducing the gear oil’s lubricating qualities.
■ When you drive through water
If driving through water, such as when crossing shallow streams, first check
the depth of the water and the bottom of the river bed for firmness. Drive
slowly and avoid deep water.
■ Inspection after off-road driving
●Sand and mud that has accumulat ed in brake drums and around brake
discs may affect braking efficiency and may damage brake system compo-
nents.
● Always perform a maintenance inspection after each day of off-road driv-
ing that has taken you through rough terrain, sand, mud, or water. For
scheduled maintenance information, refer to the “Scheduled Maintenance
Guide” or “Owner’s Manual Supplement”.

209
2-5. Driving information
2
When driving
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropri-
ate to the prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that are appropriate to the prevailing outside tem-
peratures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspect the level and specific grav-
ity of battery electrolyte.
● Have the vehicle fitted with four snow tires or purchase a set
of tire chains for the rear tires.
Ensure that all tires are the same size and brand, and that chains
match the size of the tires.
■Before driving the vehicle
Perform the following according to the driving conditions.
●Do not try to forcibly open a window, scrape an outside rear
view mirror surface or move a wiper or outside rear view mir-
ror that is frozen. Pour warm water over the frozen area to
melt the ice. Wipe away the water immediately to prevent it
from freezing.
● To ensure proper operation of th e climate control system fan,
remove any snow that has accumulated on the air inlet vents
in front of the windshield.
● Remove any ice that has accumu lated on the vehicle chassis.
● Periodically check for and remove any excess ice or snow
that may have accumulated in the wheel well or on the
brakes.

355
3-5. Other interior features
3
Interior and exterior features
■
The protection circuit may be activated to cut the power supply if any
of the following conditions apply:
●The engine is started with the power outlet main switch on.
● Use of electrical appliances exceeding the maximum capacity is
attempted.
A sound may be heard when the protection circuit is activated.
This is normal and does not indicate a malfunction.
● Electrical appliances, which consume power exceeding 100 W, have
been used continuously for a long time period.
● The total power usage by all electrical features (headlights, air condition-
ing, etc.) has exceeded the total vehicle maximum for an extended
period of time.
■ If the protection circuit is activated and the power supply is cut, con-
duct the following procedure:
Park the vehicle in a safe place, and then securely apply the park-
ing brake.
Check and ensure the following conditions:• The shift lever is in P or N. (automatic transmission)
• The shift lever is in N and the clutch pedal is not depressed. (manual transmission)
Make sure that the power consumption of the electric appliance is
within the maximum capacity of the power outlet and the appliance
is not broken.
Press the power outlet main switch again.
When the cabin temperature is high, open the windows to cool the tempera-
ture down. Once it reaches the normal temperature, turn the power outlet
main switch on again.
If the power supply is not resumed even after performing the above proce-
dure, have the vehicle inspected by a Toyota dealer.

363
3-5. Other interior features
3
Interior and exterior features
CAUTION
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering
with the pedals while driving. An unexpectedly high speed may result or it may
become difficult to stop the vehicle, leading to a serious accident.
■
When installing the driver’s floor mat
●Do not use floor mats designed for other models or different model year
vehicles, even if they are Toyota Genuine floor mats.
● Only use floor mats designed for the driver’s seat.
● Always install the floor mat securely using the retaining hooks (clips) pro-
vided.
● Do not use two or more floor mats on top of each other.
● Do not place the floor mat bottom-side up or upside-down.
■ Before driving
●Check that the floor mat is securely
fixed in the correct place with all the
provided retaining hooks (clips). Be
especially careful to perform this check
after cleaning the floor.
● With the engine stopped and the shift
lever in P (automatic transmission) or N
(manual transmission), fully depress
each pedal to the floor to make sure it
does not interfere with the floor mat.

Maintenance and care4
387
4-1. Maintenance and careCleaning and protecting the vehicle exterior ......... 388
Cleaning and protecting the vehicle interior .......... 391
4-2. Maintenance Maintenance requirements .................. 394
General maintenance....... 396
Emission inspection and maintenance (I/M)
programs
.......................... 399
4-3. Do-it-yourself maintenance Do-it-yourself service precautions .................... 400
Hood ................................ 404
Engine compartment ........ 406
Tires ................................. 422
Tire inflation pressure ...... 431
Wheels ............................. 436
Air conditioning filter......... 439
Wireless remote control battery ............................ 442
Checking and replacing fuses .............................. 444
Light bulbs........................ 454

396
4-2. Maintenance
General maintenance
Engine compartment
ItemsCheck points
Battery Maintenance-free. ( P. 418)
Brake fluid At the correct level? ( P. 414)
Engine coolant At the correct level? ( P. 412)
Engine oil At the correct level? ( P. 408)
Exhaust system No fumes or strange sounds?
Power steering fluid At the correct level? ( P. 416)
Radiator/condenser/hoses Not blocked with foreign matter?
(P. 414)
Washer fluid At the correct level? (P. 420)
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Scheduled Maintenance
Guide” or “Owner’s Manual Supp lement”. It is recommended that
any problem you notice should be brought to the attention of your
Toyota dealer or qualified service shop for advice.

398 4-2. Maintenance
Vehicle exterior
Steering wheel• Moves smoothly?
• Has correct free play?
• No strange noises?
ItemsCheck points
Doors • Operate smoothly?
Engine hood • The lock system works properly?
Fluid leaks • Is there any leakage after park-
ing?
Tire • Inflation pressure is correct?
• Tire surfaces not worn or dam-
aged?
• Tires rotated according to the maintenance schedule?
• Wheel nuts are not loose?
Windshield wipers • The wiper blades should not
show any signs of cracking,
splitting, wear, contamination or
deformation.
• The wiper blades should clear the windshield without streak-
ing or skipping.
CAUTION
■ If the engine is running
Turn the engine off and ensure that there is adequate ventilation before per-
forming maintenance checks.
ItemsCheck points