Emission Control System (SKYACTIV-D 2.2)
This vehicle is equipped with an emission control system (the catalytic converter and the Selective Catalytic Reduction (SCR) system*1 are part of this system) that enables the vehicle to comply with existing exhaust emissions requirements.
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SCR system is designed to reduce nitrogen oxide (NOx) in the exhaust gas and purify the exhaust gas by injecting it with Diesel Exhaust Fluid (DEF). For more details, refer to the Selective Catalytic Reduction (SCR) System (Search).
About the catalytic converter
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 fire could cause serious injury or death.
Ignoring the following precautions could cause lead to accumulate on the catalyst inside the converter or cause the converter to get very hot. Either condition will damage the converter and cause poor performance.
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Do not drive your Mazda with any sign of engine malfunction.
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Do not coast with the ignition switched off.
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Do not descend steep grades in gear with the ignition switched off.
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Do not operate the engine at high idle for more than 2 minutes.
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Do not tamper with the emission control system. All inspections and adjustments must be made by a qualified technician.
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Do not push-start or pull-start this vehicle.
About the SCR system
Be careful not to allow the DEF to run out. If the DEF completely runs out, the SCR system will not operate normally:
If the vehicle runs out of DEF, the vehicle speed is restricted in steps to prevent contaminants from being exhausted. When the remaining distance-to-empty reaches 0 km (0 miles) in the final stage, the engine is forced to idle. For replenishment of the DEF supply, consult an Authorized Mazda Dealer.
Use a Mazda genuine product or a product conforming to ISO22241-1 for DEF. If incompatible DEF is used, the SCR system may not operate normally. For the recommended DEF, consult the nearest Authorized Mazda Dealer.
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When the remaining distance-to-empty is 640 km (400 miles) or shorter while the DEF warning indication is displayed, the SCR warning light turns on and the vehicle speed is restricted. In addition, if there is a problem with the SCR system/DEF and the remaining distance-to-empty is 200 km (125 miles) or shorter, the SCR warning light flashes and the vehicle speed is restricted.
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DEF needs to be replenished periodically according to the scheduled maintenance information. If a warning message is displayed in the multi-information display or the SCR warning light flashes, consult an Authorized Mazda Dealer.
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Normally, the vehicle can be driven about 12,000 km (7,500 miles) before the DEF needs to be replenished.
