SA-054-21

BULLETIN NOTES
APPLICABLE MODEL(S)/VINS
2021 Mazda3
2021 CX-30
2021 CX-5
2021 CX-9
2022 MX-30
DESCRIPTION
Some customers may complain about any the following infotainment system concerns:
•
•
•
•
Reboot
Slow reboot in morning
Display frozen
Display blank
NOTE:
• Rear view monitor operation is normal
• No DTC stored
REPAIR PROCEDURE
1. Verify customer concern.
2. Check for DTCs.
Is DTC stored?
• YES: This service information does not apply. Go to normal MGSS DTC diagnosis.
• NO: Go to next step.
3. Retrieve 6 digit CMU Serial Number. Go to "CMU Serial Number Retrieval"
Is the CMU Serial Number within the affected range? See "Affected CMU Serial Number Range" table.
• YES: Contact Hotline for additional support.
• NO: This service information does not apply. Go to MGSS SA-027/21 diagnostics.
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4. Verify repair.
CMU Serial Number Retrieval
CX-5 and CX-9
Mazda3, CX-30, MX-30
1. Press and hold the Volume knob, then press
and hold the Entertainment and Favorites buttons
at the same time for 3-5 seconds and the Factory
/Service Inspection screen will appear.
2. Select "Service Information"
3. Select "Connected Device Information"
4. Select "CMU"
5. Scroll down to "Serial No." and document in
Hotline file
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6. Return to Factory/Service Inspection main
screen and select End Diag Mode
Affected CMU Serial Number Range
Model
Serial Number Start
Serial Number End
Part Number
MX-30
500125
500664
DN4E 66 9C0-C
CX-5 and CX-9
687234
754800
TC3P 66 9C0-F
Mazda3 (Japan built)
622110
624748
BDGF 66 9C0-W
Mazda3 (Japan built)
500070
505859
BGMC 66 9C0-D
Mazda3 (Mexico built) and CX-30
216848
227361
DGH9 66 9C0-J
Mazda3 (Mexico built) and CX-30
104005
121788
DGMR 66 9C0-D
TBD
TBD
BFWM 66 9C0-*
111827
113170
BGCE 66 9C0-B
Mazda3 Turbo (Japan built)
Mazda3 Turbo (Mexico built) and CX-30 Turbo
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