Toyota Yaris Owner's Manual page 338

338
7-3. Do-it-yourself maintenance

Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.

When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine

If low quality oil or oil of an inappropriate viscosity is used

When driving at high engine speeds or with a heavy load, when towing
(except for South Africa), or when driving while accelerating or decelerating
frequently

When leaving the engine idling for a long time, or when driving frequently
through heavy traffic

After changing the engine oil (diesel engine only)
The engine oil maintenance data should be reset. Perform the following pro-
cedures:
1
Switch the display to the trip meter "A" when the engine is running.
(P. 91)
2
Turn the engine switch to the "LOCK" position (vehicles without a smart
entry & start system) or off (vehicles with a smart entry & start system).
3
Vehicles without a smart entry & start system:
While pressing the display change button (P. 91), turn the engine
switch to the "ON" position (do not start the engine because reset mode
will be canceled). Continue to press and hold the button until the trip
meter displays "000000".
Vehicles with a smart entry & start system:
While pressing the display change button (P. 91), turn the engine
switch to the IGNITION ON mode (do not start the engine because other-
wise the reset mode will be canceled). Continue to press and hold the
button until the trip meter displays "000000".