SA-025-23a

BULLETIN NOTES
This service alert supersedes the previously issued service alert listed below. The changes are noted in Red text.
Previous Service Alert
Date(s) Issued:
SA-025/23
04/21/23
SA-034/22
05/20/22
SA-004/21
09/13/21, 06/02/21, 05/24/21 and 01/19/21
SA-010/20
06/29/20, 06/01/20, 05/08/20, 04/29/20 and 01/15/20
APPLICABLE MODEL(S)/VINS
2019-2024 Mazda3
2021-2024 CX-5
2022-2023 MX-30
2020-2024 CX-30
2021-2023 CX-9
2023-2024 CX-50
2024 CX-90
DESCRIPTION
When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU
after replacement.
Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated..
CAUTION:
• DO NOT swap TCU with another vehicle as the TCU is VIN locked after activation. A TCU swap with another
vehicle will disable Connected Services on both vehicles.
• If TCU activation is not performed, connected vehicle functions will not operate. This will have a negative impact
on the customer because they will need to return to the dealer for repairs.
TCU Activation
1. Install the new TCU.
• Mazda3 - TELEMATICS COMMUNICATION UNIT REMOVAL/INSTALLATION
• CX-30 - TELEMATICS COMMUNICATION UNIT REMOVAL/INSTALLATION
2. Use the DCA8000 battery charger SST to maintain battery voltage. Go to SA-034/21.
3. Confirm M-MDS hardware that is in good working condition. Go to SA-066/20.
4. Turn the ignition ON (engine ON or OFF).
Page 1 of 9
12/06/2023 02:09 PM tlawrenc
5. Connect MDARS to the vehicle.
6. Select "Tool Box".
7. Select the repair icon.
Page 2 of 9
12/06/2023 02:09 PM tlawrenc
8. Select "Mazda Connect"
9. Select Activating TCU
(links TCU to server) ->
"Run".
Wait for "initialization
complete" message.
NOTE: MDARS may show
"Incomplete". This may be
caused by:
• Advanced key is not in
the vehicle.
• Connected vehicle
maintenance mode is
enabled.
• Pacemaker radio wave
interference prevention
is enabled.
• key transmitter power
saving function is
enabled. See SA-020/
21.
Page 3 of 9
12/06/2023 02:09 PM tlawrenc
10. Check the Items as shown
(A) then select "Next" (B)
11. Select Activating Remote
Control by Smart Phone (links
TCU to BCM) -> "Run".
Wait for "initialization
complete" message.
If customer was previously enrolled, reception strength icon will show normal
12. Turn Ignition OFF and
wait at least 2 minutes.
13. Turn Ignition ON and then
check reception strength.
If customer was not previously enrolled, reception strength icon will show "X", this is a
normal Deactivation Mode function.
Page 4 of 9
12/06/2023 02:09 PM tlawrenc
Customer/Dealer can activate CV services anytime via MyMazda app (there just might
be a slight delay in making the backend connection since it was temporarily
deactivated).
14. Clear DTC's
NOTE:
• New TCU replacement part may not have the latest software version installed. See Parts Information.
• Perform the following steps to confirm TCU software version is at:
10006 or later for CX-30 and Mazda3
10023 or later for CX-5 and CX-9
10003 or later for CX-50
10019 or later for MX-30
○
○
○
○
CX-5 and CX-9
CX-30 and Mazda3
a. Press and hold the Volume
knob, then press and hold the
Entertainment and Favorite
buttons at the same time for
3-5 seconds and the Factory/
Service Inspection screen will
appear.
b. Select Service Information.
Page 5 of 9
12/06/2023 02:09 PM tlawrenc
c. Select TCU Linked
information.
d. Scroll down to TCU
Software Version and confirm
the software version is at:
• 10006 or later for CX30 and Mazda3
• 10023 or later for CX-5
and CX-9
• 10003 or later for CX50
• 10019 or later for MX30
Is the TCU software version
correct?
• Yes: Repair is
complete.
• No: Go to MGSS ->
Infotainment/TCU ->
Telematics
Communication Unit
(TCU) Updates to
update the TCU
software version.
See Warranty
Information for
software update
payment.
○
Page 6 of 9
12/06/2023 02:09 PM tlawrenc
NOTE:
• If DTC U2050:55-TCU (Activation of remote control not implemented) is stored, go to TSB 09-013/20 - DTC
U2050:55 STORED AFTER REPLACING OR REPROGRAMMING TCU.
• If the TCU was not replaced and MDARS shows error code 400t02 and/or ERROR:05, TCU activation was
previously completed. Ignore these errors as TCU activation is not required.
ERROR:05
Error code 400t02
Page 7 of 9
12/06/2023 02:09 PM tlawrenc
PARTS INFORMATION
Model
CX-5
CX-9
Mazda3
CX-30
Base Part
Number
KJK9-67CM0
TC3M-67CM0
BGMC-67CM0
DGH9-60CM0
Description
DATA
COMMUNICATION
MODULE
DATA
COMMUNICATION
MODULE
DATA
COMMUNICATION
MODULE
DATA
COMMUNICATION
MODULE
Suffix
Action
"B" or
earlier
Go to MGSS -> Infotainment/TCU -> Telematics
Communication Unit (TCU) Updates to update the TCU
software version.
"C" or
later
TCU softtware update is not required
"B" or
earlier
Go to MGSS -> Infotainment/TCU -> Telematics
Communication Unit (TCU) Updates to update the TCU
software version.
"C" or
later
TCU softtware update is not required
"A" or
earlier
Go to MGSS -> Infotainment/TCU -> Telematics
Communication Unit (TCU) Updates to update the TCU
software version.
"C" or
later
TCU softtware update is not required
"F" or
earlier
Go to MGSS -> Infotainment/TCU -> Telematics
Communication Unit (TCU) Updates to update the TCU
software version.
"G" or
later
TCU softtware update is not required
Page 8 of 9
12/06/2023 02:09 PM tlawrenc
WARRANTY INFORMATION
NOTE:
• This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
• This repair will be covered under Mazda’s New Vehicle Limited Warranty
• Additional diagnostic time cannot be claimed for this repair.
Warranty Type
A
Symptom Code
99
Damage Code
Part Number Main Cause
Quantity
99
**** -67-CM0 *
1
Operation Number / Hours
(For Replacement)
T0524XRX
Mazda3 / 0.4 Hrs.
’20 CX-30 / 0.5 Hrs.
’21 CX-30 / 0.6 Hrs.
CX-5 / 0.6 Hrs.
CX-9 / 0.7 hrs.
Operation Number / Hours
(For Reprogramming)
T0524XRT / 0.4 Hrs. (Max)
NOTE: All claims will pend for adjuster review.
Page 9 of 9
12/06/2023 02:09 PM tlawrenc