2008 TOYOTA HIGHLANDER check engine

198 2-3. Operating the lights and wipers
■The windshield wiper and washer can be operated when
The “ENGINE START STOP” switch or the engine switch is in ON.
■ Intermittent windshield wiper interval (INT) mode
■ If no windshield washer fluid sprays
Check that the washer nozzles are not blocked and if there is washer fluid in
the windshield washer fluid reservoir.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■ When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled
toward you and held continually.
■ When a nozzle is blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.
Intermittent windshield wiper interval
adjustment (increase)
Intermittent windshield wiper interval
adjustment (decrease)

214 2-4. Using other driving systems
■If the “DAC“switch is turned off du ring operation of the downhill assist
control system
The downhill assist control system gradually ceases operation. The downhill
assist control system indicator will flash during the cancelling operation, and
then go off when the system is fully off.
■ Downhill assist control system operation sound
A sound may be heard from the engine compartment during operation of the
downhill assist control system. This sound does not indicate a malfunction.
■ When the downhill assist contro l system operates continuously
The brake actuator may overheat. In that case, the system will cease opera-
tion and a buzzer will sound to alert the driver. Stop the vehicle in a safe
place. (Do not continue normal driving.)
■ System malfunction
●The downhill assist control system indicator does not come on when the
“ENGINE START STOP“ switch of the engine switch is turned to ON.
● 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
■Conditions which may affect th e downhill assist control system
The system may not operate on the following surfaces, which may lead to an
accident causing death or serious injury.
● Slippery surface such as wet or muddy roads
● Icy surfaces
● Unpaved roads

217
2-5. Driving information
2
When driving
CAUTION
■
Off-road driving precautions
Always observe the following precautions to minimize the risk of serious per-
sonal injury or damage to your vehicle:
●Drive carefully when off the road. Do not take unnecessary risks by driving
in dangerous places.
● Do not grip the steering wheel spokes when driving off-road. A bad bump
could jerk the wheel and injure your hands. Keep both hands and espe-
cially your thumbs on the outside of the rim.
● Always check your brakes for effectiveness immediately after driving in
sand, mud, water or snow.
● After driving through tall grass, mud, rock, sand, rivers, etc., check that
there is no grass, bush, paper, rags, stone, sand, etc. adhering or trapped
on the underbody. Clear off any such matter from the underbody. If the
vehicle is used with these materials trapped or adhering to the underbody,
a breakdown or fire could occur.
● When driving off-road or in rugged terrain, do not drive at excessive
speeds, jump, make sharp turns, strike objects, etc. This may cause loss
of control or vehicle rollover causing death or serious injury. You are also
risking expensive damage to your vehicle’s suspension and chassis.
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.

224
2-5. Driving information
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 front tires.
Ensure that all tires are the same size and brand, and that chains
match the size of the tires.
■Before driving the vehicle
Observe the following according to the driving conditions.
●Do not try to forcibly open a window or move a wiper 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.

233
2-5. Driving information
2
When driving
●
Note that when making a turn, th e trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by making
a larger than normal turning radius.
● Crosswinds and rough roads will adversely affect handling of your
vehicle and trailer, causing sway . Periodically check the rear to
prepare for being passed by large trucks or buses, which may
cause your vehicle and trailer to sway. If swaying occurs, firmly grip
the steering wheel, reduce speed immediately but gradually, and
steer straight ahead. Never increase speed. If you make no
extreme correction with the stee ring or brakes, your vehicle and
trailer will stabilize.
● Take care when passing other vehicles. Passing requires consider-
able distance. After passing a vehicle, do not forget the length of
your trailer, and be sure you hav e plenty of room before changing
lanes.
● In order to maintain engine braking efficiency when driving on a
long steep downgrade, do not use overdrive. Transmission shift
range position must be in 4, in the S mode.
● Due to the added load of the trailer, your vehicle's engine may
overheat on hot days (at temperatures over 85°F [30°C]) when
driving up a long or steep grade. If the engine coolant temperature
gauge indicates overheating, immedi ately turn off the air condition-
ing (if in use), pull your vehicle off the road and stop in a safe spot.
(  P. 520)

235
2-5. Driving information
2
When driving
■
Before towing
Check that the following conditions are met:
●The vehicle's tires are properly inflated. ( P. 534)
● Trailer tires are inflated according to the trailer manufacturer's recom-
mendation.
● All trailer lights work
● All lights work each time you connect them.
● The vehicle remains level when a loaded or unloaded trailer is hitched.
Do not drive if the vehicle is not level, and check for improper tongue
load, overloading, worn suspension, or other possible causes.
● The trailer cargo is securely loaded.
● The rear view mirrors conform to all applicable federal, state/provincial or
local regulations. If they do not, instal l rear view mirrors appropriate for
towing purposes.
■ Break-in schedule
If your vehicle is new or equipped with any new power train components
(such as an engine, transmission, differential and wheel bearing), Toyota
recommends that you do not tow a trailer until it has been driven for over
2000 miles (3200 km).
However, avoid full throttle acceleration.
■ Maintenance
●If you tow a trailer, your vehicle will require more frequent maintenance
due to the additional load. (See “Scheduled Maintenance Guide” or
“Owner’s Manual Supplement”.)
● Retighten the fixing bolts of the towing ball and bracket after approxi-
mately 600 miles (1000 km) of trailer towing.

298 3-3. Using the rear audio system
■The rear seat entertainmen t system can be used when
The “ENGINE START STOP” switch or the engine switch is in ACC or ON.
■ Discs that can be used
Discs with the marks shown below can be used.
Playback may not be possible depending on recording format or disc fea-
tures, or due to scratches, dirt or deterioration.
■ When appears on the screen
It indicates that the selected switch cannot work.
■ Rear system lock
P. 290
■ Error messages
DISC CHECK: Indicates that the disc is dirty, damaged or was inserted
upside down. Clean the disc or insert it correctly.
REGION ERROR: Indicates that the DVD region code is not set properly.
DVD ERROR: Indicates that there is a problem inside the player. Eject the disc. Set the disc again.
If the malfunction still exists, take the vehicle to your
Toyota dealer.

Maintenance and care4
397
4-1. Maintenance and care ............................... 398
Cleaning and protecting the vehicle exterior......... 398
Cleaning and protecting the vehicle interior.......... 401
4-2. Maintenance ................... 404 Maintenance requirements .................. 404
General maintenance....... 406
Emission inspection and maintenance (I/M)
programs........................ 409 4-3. Do-it-yourself
maintenance ................. 410
Do-it-yourself service precautions .................... 410
Hood ................................ 414
Positioning a floor jack ..... 416
Engine compartment ........ 419
Tires ................................. 433
Tire inflation pressure ...... 443
Wheels ............................. 447
Air conditioning filter......... 449
Key battery ....................... 452
Checking and replacing fuses .............................. 455
Light bulbs........................ 466