catalytic converter TOYOTA YARIS 2020 Owners Manual (in English)

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
2-4. Fuel and Emission
2
Before Driving
Fuel and Engine Exhaust Precautions
Vehicles with catalytic converters or oxygen sensors must use O NLY
UNLEADED FUEL, which will reduc e exhaust emissions and keep
spark plug fouling to a minimum.
To achieve maximum engine perfor mance, use the specified fuel.
*1: U.S. federal law requires that octane ratings be posted on gas station
pumps.
Fuel with a rating lower than 87 octane (91 RON) could cause th e
emission control system to lose e ffectiveness. It could also cause
engine knocking and serious engine damage.
Gasoline blended with oxygenates such as alcohol or ether com-
pounds are generally referred to as oxygenated fuels. The commo n
gasoline blend that can be used with your vehicle is ethanol bl ended
at no more than 10 %. Gasoline containing alcohol, such as etha nol or
methanol, may be marketed under the name “Gasohol”.
Vehicle damage and drivability problems resulting from the use of the
following may not be covered by the warranty. • Gasohol containing m ore than 10 % ethanol.
• Gasoline or gasohol containing methanol.
• Leaded fuel or leaded gasohol.
Fuel Requirements
FuelOctane Rating*1 (Anti-knock index)
Regular unleaded fuel87 [(R+M)/2 method] or above (91 RON or above)
NOTICE
●USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to the catalytic converter and oxygen se nsors and
will lead to deterioration of the emission control system and o r failures.
● This vehicle can only use oxygenated fuels containing no more t han 10 %
ethanol by volume. Damage to the vehicle may occur when ethanol
exceeds this recommendation, or if the gasoline contains any me thanol.
Stop using gasohol of any kind if your vehicle engine is performing poorly.
● Never add fuel system additives other than a Toyota genuine pro duct, oth-
erwise the emission control system could be damaged. Consult yo ur Toy-
ota dealer for details.

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YARIS_YARIS HATCHBACK_OM_OM99V59z_(U)
2-4. Fuel and Emission
This vehicle is equipped with an emission control system (the catalytic
converter is part of this system) that enables the vehicle to c omply
with existing exhaust emissions requirements.
●Under U.S. federal law, any modification to the original-equipm ent emission
control system before the first sale and registration of a vehi cle is subject to
penalties. In some states, such modification made on a used veh icle is also
subject to penalties.
● While the engine is off, the sound of a valve opening and closi ng can be
heard at the rear of the vehicle, however this does not indicat e an abnormal-
ity. The vehicle has a selfchecking device and it operates whil e the engine is
off.
Emission Control System
WARNING
■ Never park over or near anything flammable
Parking over or near anything flammable, such as dry grass, is dangerous.
Even with the engine turned off, the exhaust system remains very hot after
normal use and could ignite anything flammable. A resulting fir e could
cause serious injury or death.
NOTICE
Ignoring the following precautions could cause lead to accumula te on the
catalyst inside the converter or cause the converter to get ver y hot. Either
condition will damage the converter and cause poor performance.
● USE ONLY UNLEADED FUEL.
● Do not drive your Toyota with any sign of engine malfunction.
● Do not coast with the ignition switched off.
● Do not descend steep grades in gear with the ignition switched off.
● Do not operate the engine at high idle for more than 2 minutes.
● Do not tamper with the emission control system. All inspections and
adjustments must be made by a qualified technician.
● Do not push-start or pull-start your vehicle.