2012 TOYOTA COROLLA low oil pressure

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■When replacing wheels
The wheels of your Toyota, except for the compact spare tire, are
equipped with tire pressure warning valves and transmitters that allow
the tire pressure warning system to provide advanced warning in the
event of a loss in tire inflation pressure. Whenever wheels are replaced,
the tire pressure warning valves a
nd transmitters must be installed.
(  P. 369)
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 ends facing inward.
Installing the nuts with the tapered
ends facing outward can cause the
wheel to break and eventually cause
the wheel to come off while driving,
which could lead to an accident
resulting in death or serious injury.
Tapered
portion

420
5-2. Steps to take in an emergency
If a war ning light tur ns on or a war ning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.The following warning indicates a possible problem in the brake sys-
tem. Immediately stop the vehicle in a safe place and contact your
Toyota dealer.
*: Parking brake engaged warning buzzer: The buzzer sounds to indicate that the parking brake is still engaged (with the vehicle having reached a speed
of 3 mph [5 km/h]).
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Warning lightWarning light/Details
(U.S.A.)
(Canada) Brake system warning light (warning buzzer)*
• Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low.
Calmly perform the following actions if any of the warning lights turn
on or flash. If a light turns on or flashes, but then turns off, this does
not necessarily indicate a malfunction in the system.

523
Alphabetical index
Tools......................................... 432
Total load capacity .................. 180
Towing
Dinghy towing ............... 201, 202
Emergency towing ................ 414
Trailer towing ................ 185, 200
TRAC ........................................ 173
Traction control ....................... 173
Trip information....................... 156
Trip meter................................. 149
Trunk Opener ................................... 47
Trunk light Wattage ................................ 475
Turn signal lights Replacing light bulbs ............ 399
Switch ................................... 146
Wattage ................................ 475
Valet key..................................... 22
Vanity mirrors .......................... 321
Vehicle identification number................................... 464
Vehicle stability control .......... 173
VSC ........................................... 173 Warning buzzers
Brake system ........................420
Downshifting..........................143
Seat belt reminder .................422
Warning lights
Anti-lock brake system ..........421
Brake assist system ..............421
Brake system ........................420
Charging system .... ...............420
Electric power steering system ................................421
Engine oil maintenance ......... 422
Engine oil pressure ...............420
Low fuel level ........................422
Low tire pressure warning light .....................................422
Malfunction indicator lamp ....421
Open door .............................422
Pretensioners ........................421
Seat belt reminder light .........422
Smart key system... ...............430
SRS airbags ..........................421
Tire pressure warning light ....422
Washer fluid ..........................422
V
W

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What to do if...
■
Warning lights
P. 422
or
P. 4 2 0P. 422
P. 4 2 0P. 421
P. 4 2 0P. 421
P. 421
or
P. 4 2 1P. 422
P. 4 2 1P. 422
P. 422
or
P. 4 2 1P. 422
P. 4 2 2P. 430
*: The light flashes to indicate a malfunction.
Brake system warning
lightTire pressure warning
light
Low windshield washer fluid level
warning light
Charging system warn-
ing lightElectric power steering
warning light
Low engine oil pressure
warning lightSlip indicator
light
Malfunction indicator
lampCruise control indicator
light
*
Open door warning light
SRS warning lightLow fuel level warning
light
ABS warning lightDriver’s seat belt
reminder light
Front passenger’s seat belt
reminder light
Maintenance required
reminder lightSmart key system warn-
ing light