Selective Catalytic Reduction (SCR) System
Selective Catalytic Reduction (SCR) System (Some Models)
The SCR system is designed to reduce nitrogen oxide (NOx) in the exhaust gas and purify the exhaust gas by injecting it with AdBlue®.
Be careful not to allow the AdBlue® fluid to run out. If the AdBlue® fluid completely runs out, the SCR system will not operate normally.
When the remaining AdBlue® 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 Authorised Mazda Dealer. If AdBlue® needs to be replenished, add AdBlue® following the specified procedure.
Refer to AdBlue® Replenishment (Search).
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AdBlue® 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 AdBlue® 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.
Selective Catalytic Reduction (SCR) System Indications
As the remaining amount of AdBlue® lowers, the SCR system notifies the driver using the following indications.
The vehicle speed may be restricted for a while even if the warning light turns off after replenishing the AdBlue®. To cancel the vehicle speed restriction immediately, switch the ignition OFF after the warning light turns off and then switch the ignition ON again.
|
Status |
Warning sound |
SCR warning light |
Multi-information display indication |
Driving restriction |
|---|---|---|---|---|
|
Remaining AdBlue® has decreased (Maximum driving distance : 2400 km (1491 miles) or less) |
Sound is activated when ignition is switched ON |
Turns off |
 |
None |
|
Remaining AdBlue® is low (Maximum driving distance : 1400 km (869.9 miles) or less) |
Sound is activated when ignition is switched ON |
Turns on |
 |
None |
|
Remaining AdBlue® is extremely low (Maximum driving distance : 700 km (435 miles) or less) |
Sound is activated when ignition is switched ON |
Flashes |
 |
Vehicle speed lowers gradually to 50 km/h (31 mph) |
|
No remaining AdBlue® (Maximum driving distance : 0 km (0 miles)) |
Sound is activated when remaining-distance-to-empty indication is 0 km (0 miles) |
Flashes |
 |
Engine restarting not possible |
The following indications are displayed when there is a problem with the SCR system/AdBlue®. If there is a problem with the SCR system/AdBlue®, consult an Authorised Mazda Repairer.
The vehicle speed may be restricted for a while even if the warning light turned off after having the vehicle repaired. To cancel the vehicle speed restriction immediately, switch the ignition OFF after the warning light turns off, and then switch the ignition ON again.
|
Status |
Warning sound |
SCR warning light |
Multi-information display indication |
Driving restriction |
|---|---|---|---|---|
|
Vehicle is driven with AdBlue® in diluted form (Maximum driving distance : 700 km (435 miles) or less) |
|
Flashes |
 |
None |
|
Vehicle continues to be driven with AdBlue® in diluted form (Maximum driving distance : 650 km (404 miles) or less) |
Sound is activated when ignition is switched ON |
Flashes |
 |
Vehicle speed lowers gradually to 50 km/h (31 mph) |
|
Vehicle continues to be driven with AdBlue® in diluted form (Maximum driving distance : 0 km (0 miles)) |
Sound is activated when remaining-distance-to-empty indication is 0 km (0 miles) |
Flashes |
 |
Engine restarting not possible |
|
Problem with AdBlue® (Maximum driving distance : 700 km (435 miles) or less) |
|
Flashes |
 |
None |
|
Problem with AdBlue® continues (Maximum driving distance : 650 km (404 miles) or less) |
Sound is activated when ignition is switched ON |
Flashes |
 |
Vehicle speed lowers gradually to 50 km/h (31 mph) |
|
Problem with AdBlue® continues (Maximum driving distance : 0 km (0 miles)) |
Sound is activated when remaining-distance-to-empty indication is 0 km (0 miles) |
Flashes |
 |
Engine restarting not possible |
|
Problem with SCR system (Maximum driving distance : 700 km (435 miles) or less) |
|
Flashes |
 |
None |
|
Problem with SCR system continues (Maximum driving distance : 650 km (404 miles) or less) |
Sound is activated when ignition is switched ON |
Flashes |
 |
Vehicle speed lowers gradually to 50 km/h (31 mph) |
|
Problem with SCR system continues (Maximum driving distance : 0 km (0 miles)) |
Sound is activated when remaining-distance-to-empty indication is 0 km (0 miles) |
Flashes |
 |
Engine restarting not possible |
|
AdBlue® has been replenished over the specified amount |
― |
Turns on |
 |
None |
