Selective Catalytic Reduction (SCR) System
The 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).
Be careful not to allow the DEF to run out. If the DEF completely runs out, the SCR system will not operate normally.
When the remaining DEF is low, a message is displayed on the multi-information display, and the SCR warning light turns on/flashes.
Refer to Selective Catalytic Reduction (SCR) System Indications (Search).
In this case, consult an Authorized Mazda Dealer. If DEF needs to be replenished, add DEF following the specified procedure.
Refer to Diesel Exhaust Fluid (DEF) Replenishment (Search).
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DEF needs to be replenished periodically according to the scheduled maintenance information.
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Normally, the vehicle can be driven about 12,000 km (7,500 miles) before the DEF needs to be replenished. However, it may need to be replenished earlier depending on the driving and environmental conditions (such as putting a high load on the engine while driving or driving the vehicle at high altitudes).
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The sound of the SCR system operating may be heard from the area under the vehicle, however, this does not indicate a problem.
