NOTE:
1. DEF needs to be replenished periodically according to the scheduled maintenance
information.
2. Normally, the vehicle can be driven about 7,500 miles (12,000 km) before the DEF
needs to be replenished. However, it may need to be replenished earlier depending on
the driving and environmental conditions (i.e. high load on the engine while driving or
driving the vehicle at high altitude).
3. The sound of the SCR system operating may be heard from under the vehicle,
however, this does not indicate a problem.
▼Selective Catalytic Reduction (SCR) System Indications
As the remaining amount of Diesel Exhaust Fluid (DEF) 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 DEF. To cancel the vehicle speed
restriction immediately, switch the ignition OFF after the warning light turns off, then
switch the ignition ON again.

Status
Remaining DEF has
decreased (Max.
driving distance: 600
miles (966 km) or
less).

Warning sound

SCR
warning
light

Multiinformation
display
indication

Driving
restriction

Sound is activated
when the ignition is Turns off
switched ON.

None

See Owner's
Manual ->
When Driving
-> Selective
Catalytic
Reduction
(SCR) System

Page 10 of 27
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2019 Mazda North American Operations, U.S.A.

Service Alert No.: SA-026/19

Last Issued: 06/13/2019

Remaining DEF is low
(Max. driving
distance: 400 miles
(644 km) or less).

Sound is activated
when the ignition is Turns on
switched ON.

Vehicle speed
of 50 mph (80
km/h) or
slower.

Remaining DEF is
extremely low (Max.
driving distance: 200
miles (322 km) or
less).

Sound is activated
when the ignition is
switched ON.

Flashes

Vehicle speed
of 30 mph (48
km/h) or
slower.

No remaining DEF
(Max. driving
distance: 0 miles (0
km)).

Sound is activated
when the remaining
distance to empty
indication is miles (0
km).

Flashes

Creep travel *1

The following indications are displayed when there is a problem with the SCR system/DEF.
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, then switch the ignition ON again.

Status

Warning sound

SCR
warning
light

Multiinformation
display
indication

Driving
restriction

Sound is activated
when there is a
problem.

There is a problem with
the SCR system/DEF
(Max. driving distance:
Flashes
250 miles (402 km) or Sound is activated
less).
when the ignition is
switched ON.
Condition in which a
problem with SCR
system/DEF continues
(Max. driving distance:
125 miles (201 km) or
less).

Sound is activated
when the ignition is Flashes
switched ON.

None

Vehicle speed
of 30 mph (48
km/h) or
slower.

Page 11 of 27
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2019 Mazda North American Operations, U.S.A.

Service Alert No.: SA-026/19

Last Issued: 06/13/2019

Condition in which a
Sound is activated
problem with SCR
when the remaining
system/DEF continues
distance to empty Flashes
(Max. driving distance: 0
indication is 0 miles
miles (0 km)).
(0 km).

DEF has been
replenished over the
specified amount.

---

Creep travel *1

Turns on

None

1. If the SCR catalyst temperature exceeds 356 °F, {180 °C}, the NOx sensor is activated,
and NOx is detected. The Diesel Exhaust Fluid (DEF) injection function operates
according to the purification rate of the catalyst.
2. The dosing control unit controls the heater (urea tank, urea hose) to keep warm or
defrost the Diesel Exhaust Fluid (DEF) according to the surrounding environment and
Diesel Exhaust Fluid (DEF) conditions.
3. The warning function operates if there is low or excess Diesel Exhaust Fluid (DEF) or
fluid other than normal Diesel Exhaust Fluid (DEF) is in the tank, or there is a
malfunction in the SCR system.

Page 12 of 27
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2019 Mazda North American Operations, U.S.A.

Service Alert No.: SA-026/19

Last Issued: 06/13/2019

See Owner's
Manual ->
Maintenance
▼Diesel Exhaust Fluid (DEF) Handling
and Care ->
Diesel
CAUTION:
Exhaust Fluid
(DEF)
1. Store DEF in a place out of the reach of children. If DEF gets in your mouth, wash your Handling
mouth with a large amount of water immediately and seek medical attention. If DEF is
mistakenly swallowed, drink 1 to 2 cups of water immediately and seek medical
attention. If DEF gets in your eyes, rinse them with running water immediately and
seek medical attention.
2. Do not use DEF when 2 years have elapsed from the production date indicated on the
container or the use period has expired. If DEF with an expired use period is used, the
Selective Catalytic Reduction (SCR) System may not operate normally.
3. Do not store DEF in the vehicle. DEF may deteriorate or the interior may be damaged
due to fluid leakage from the container.
4. If DEF gets on the painted surface or the interior, wash it off with water or wipe it off
with a wet cloth immediately, otherwise, it may damage the painted surface or the
interior.
5. Do not put DEF into a different container. There may be foreign matter in the
container. If DEF containing foreign matter is used, it could cause a problem with the
SCR system. In addition, changing containers is dangerous because it increases the risk
of accidental ingestion.
NOTE:
Maintenance

1. Store DEF in a cool, dark place. DEF freezes at 12 °F (–11 °C), however, when the
temperature increases, the DEF returns to its original condition.
2. DEF is a colorless, transparent, odorless, and nonpoisonous solution (urea: 32.5 %,
aqueous solution (AUS32)). When opening the container, there may be a smell of
ammonia. Open the container in a well-ventilated area.
3. If DEF gets on your hands, wash them with running water immediately.
▼Diesel Exhaust Fluid (DEF) Replenishment
CAUTION:
1. Use a Mazda genuine product or a product conforming to ISO22241-1 for DEF. If
incompatible DEF is used, the Selective Catalytic Reduction (SCR) system may not
operate normally.
2. Do not dilute DEF with water. If diluted DEF is used, it could cause a problem with the
SCR system or damage it. Do not add any fluid other than DEF to the urea tank. If any
fluid other than DEF is added, it could cause a problem with the SCR system or damage
it. Do not switch the ignition ON, and contact an Authorized Mazda Dealer.
Page 13 of 27
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2019 Mazda North American Operations, U.S.A.

Service Alert No.: SA-026/19

Last Issued: 06/13/2019

3. When adding DEF, use a bottle with an anti-spill nozzle. If a bottle without an anti-spill
nozzle or a commercial dispenser at a gasoline station is used, it could cause leakage
or the DEF could spray out.
4. Do not overfill the DEF. If the DEF is overfilled, it may freeze during cold temperatures
of 12 °F (–11°C) or less. When urea freezes, it expands and could cause tank breakage.
Always use a bottle with an auto-stop function and stop adding fluid when the autostop function operates.
NOTE:
1. When adding DEF during low temperatures of 12 °F (–11°C) or less, move the vehicle
to a warm location. If the DEF starts to freeze, it may not flow correctly, and the
correct amount may not have been added. In addition, if the fluid freezes in the urea
tank, you may not be able to tell if the correct amount of fluid was added.
2. Replenishment of DEF by an Authorized Mazda Dealer is recommended. If you want to
replenish the DEF yourself, follow the replenishment procedure below.
DEF Replenishment Procedure
1. Check the remaining amount of Diesel Exhaust Fluid (DEF) on the multi-information
display. The remaining amount of DEF and the remaining-distance-to-empty indications
are displayed when the ignition is switched ON (the screen content changes each time the
INFO switch is pressed).

See Owner's
Manual ->
Maintenance
and Care ->
Diesel
Exhaust Fluid
(DEF)
Replenishme
nt

NOTE:
The replenishment amount (reference) according to the DEF level (%) indication is
mentioned in the Owner's Manual or Workshop Manual. Even if DEF is added at the
indicated replenishment amount, 100% may not be indicated on the display.
2. Stop the vehicle on level ground.
3. Switch the ignition OFF.
4. Open the fuel-filler lid.

Page 14 of 27
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2019 Mazda North American Operations, U.S.A.

Service Alert No.: SA-026/19

Last Issued: 06/13/2019

See Owner's
Manual ->
Maintenance
and Care ->
DEF
Replenishme
nt Procedure

5. Open the cap for the DEF filler port.
6. Remove the cap from the DEF bottle. Insert the bottle into the DEF filler port and screw
it in lightly until it stops.
CAUTION:
If too much DEF is added, the SCR system might display a warning. If the warning remains
displayed, the urea tank may have a problem, or it may be damaged.
NOTE:
1. If excessive force is applied when pressing in the bottom of the bottle, the bottle or
the DEF filler port may be damaged.
2. When the urea tank is full, stop adding DEF. The flow from the bottle slows down due
to the bottle's auto-stop function. If you continue adding DEF, the urea tank will
overfill.
7. Press in the bottom of the bottle straight and add DEF.

See Owner's
Manual ->
Maintenance
and Care ->
Recommend
ed Oil

NOTE:Always use a bottle with an auto-stop function and stop adding fluid when the
auto-stop function operates.
8. Remove the bottle in the reverse order of insertion. At this time, be careful of DEF
Page 15 of 27
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2019 Mazda North American Operations, U.S.A.

Service Alert No.: SA-026/19

Last Issued: 06/13/2019

dripping from the bottle.
9. Tighten the cap of the DEF filler port until you hear two or more click sounds.
10. Switch the ignition ON once.
11. Check the following while the vehicle is stopped.
1. No DEF level warning indication is displayed on the multi-information display.
2. The DEF level (%) indication on the multi-information display shows an increase.
12. Switch the ignition OFF.
If the above indications remain unchanged even after one minute has passed with the
vehicle stopped:
1. If you have already added 1.0 US gal (3.8 L, 0.84 Imp gal) of DEF according to the DEF
level (%) indication on the multi-information display, prepare an additional 1.0 US gal See Owner's
(3.8 L, 0.84 Imp gal) of DEF or more and add it following the replenishment procedure. Manual ->
2. If you added the correct amount of DEF, the DEF level (%) indication on the multiMaintenance
information display will show an increase while the vehicle is being driven. If the DEF
and Care ->
level (%) shows no increase or the speed restriction does not cancel even while driving Inspecting
the vehicle, consult an Authorized Mazda Dealer.
Engine Oil
(Technical Background)
Level
1. Top up with new diesel exhaust fluid in the urea tank once a year.
2. Check the total driving mileage for the last three years. If 12,000 miles (19,200 km) or
more, top up with new diesel exhaust fluid in the urea tank. If less than 12,000 miles
(19,200 km), replace the diesel exhaust fluid in the urea tank.
▼Recommended Oil
SKYACTIV-D SAE 0W-30 engine oil
Mazda Genuine Oil is used in your Mazda vehicle and is the recommended SKYACTIV-D
SAE 0W-30 lubricant. Mazda Genuine SKYACTIV-D SAE 0W-30 Oil is exclusively for
SKYACTIV-D and required to achieve optimum fuel economy and durability for the Diesel
Particulate Filter. If Mazda Genuine SKYACTIV-D SAE 0W-30 Oil is not available, ACEA C3
0W-30 may be used for oil level maintenance and oil changes however, it is strongly
recommended to replace with Mazda Genuine SKYACTIV-D SAE 0W-30 at the next oil
change to maintain optimum performance.