NHTSA ID Number: 10237208
Manufacturer Communication Number: SA-005-23a
TSB/Document Date: 2023-06-04
Summary
Customers having MAZDA
CONNECT concerns should have their vehicle repaired using the following repair procedure.
Yes
2019-2020 vehicles - Go to step 6.
2021-2022 vehicles - Go to step 4.
No
Check / Replace the Navigation SD card.
Go to SA-014/21 if applicable.
Yes
Replace the CMU per 16-004/22 instructions. Update
the replacement CMU to the latest software version
(see MGSS -> Infotainment/TCU -> MAZDA
CONNECT Updates).
CX-50 - Go to Step 6
No
2021-2022 CX-5 and CX-9 - Update CMU software
version to 7000C0A-NA03_11040 or later, then go to
step 5.
2021-2022 Mazda3, CX-30 and MX-30 - Retrieve
CMU log data and contact Hotline for additional
support.
Important Note
Yes
Repair Complete.
5
2021-2022 CX-5 and CX-9 - Did
CMU software version 7000C0ANA03_11040 or later correct
customer concern?
No
Retrieve CMU log data and contact Hotline for
additional support.
Important Note
6
Is there a device connected to the
USB port?
Yes
Go to step 7.
No
Go to step 8.
Disconnect the USB device. Does
the reboot stop after USB device is
disconnected?
Yes
USB device is not compatible.
7
No
Go to step 8.
8
Does the reboot continue after
ignition key OFF then back ON?
Yes
Go to step 9.
No
Check / Replace the CMU.
1
2
Using M-MDS, are any infotainment
system DTC's stored?
3
Does the reboot continue after
removing the Navigation SD card?
4
Except CX-50 - Go to 16-004/22. Is
the CMU Serial Number within the
affected range?
Page 6 of 21
06/01/2023 11:50 AM tlawrenc
• Retrieve CMU log data if possible before
replacing the CMU.
Important Note
• Document date and time of the condition.
• Document customer device Brand/Model/
Model Number/software version on the repair
order.
○
Check / Replace the CMU.
9
Does the reboot continue after
vehicle battery disconnect?
Yes
No
• Retrieve CMU log data if possible before
replacing the CMU.
Important Note
• Document date and time of the condition.
• Document customer device Brand/Model/
Model Number/software version on the repair
order.
○
No repair needed.
Page 7 of 21
06/01/2023 11:50 AM tlawrenc
No. 4 Infotainment System Has No Sound
Step
1
Inspection
Result
Action
Yes
• DTC U3000:49 stored, Mazda3, CX-30 built
after 7/1/2021 - Update CMU to CMU_
7000C0A-NA06_12012 or later.
• DTC U3000:49 stored, MX-30 - Update CMU
to CMU_7000C0A-NA02_11036 or later.
• Except DTC U3000:49 - Go to MGSS for DTC
diagnosis.
No
• 2021-2022 CX-5 and CX-9 - Update CMU
software version to 7000C0A-NA03_11040 or
later, then go to step 2.
• 2021-2022 Mazda3 and CX-30 built after July
1, 2021 - Update CMU software version to
7000C0A-NA06_12012 or later, then go to
step 2.
• 2022 MX-30 - Update CMU software version to
7000C0A-NA02_11036 or later, then go to
step 2.
• Except vehicles listed above - Go to step 3.
Using M-MDS, are any infotainment
system DTC's stored?
Yes
Repair Complete.
No
Go to step 3.
Is sound normal other than
navigation guidance?
Yes
Go to step 4.
No
Go to step 5.
4
Can you hear the voice after raising
the navigation volume?
Yes
Normal Operation.
No
Go to step 6.
5
Can you hear sound after turning on
audio mode?
Yes
Normal Operation.
No
Go to step 7.
Yes
Repair complete.
2
• 2021-2022 CX-5 and CX-9
• 2021-2022 Mazda3 and CX30
• 2022 MX-30
Did CMU software correct customer
concern?
3
6
Replace the Navigation SD Card.
Can you hear voice after Navigation
SD Card replacement?
Check / Replace the CMU.
No
• Retrieve CMU log data if possible before
replacing the CMU.
Important Note
○
Page 8 of 21
06/01/2023 11:50 AM tlawrenc
• Document date and time of the condition.
7
Can you hear sound after raising the
volume of audio?
8
>
Are there any problems with the
media and the music files?
>
Are there any problems with the
antenna and the reception?
>
Are there any problems with
Bluetooth?
Yes
Normal Operation.
No
Go to step 8.
Yes
>
Check the media and the compatible files.
>
Check the antenna, the reception, and the Remote
Tuner side.
>
Check the Bluetooth connection and the Bluetooth
device.
No
Go to step 9.
Check / Replace the CMU.
9
Go to MGSS "DIAGNOSTIC ASSIST
FUNCTION [CONNECTIVITY
MASTER UNIT (US)]" and
Pass
perform Functional Inspection/
Adjustment -> Active Speaker Check
Function -> Speaker Inspection.
Did the Speaker Inspection Pass?
• Retrieve CMU log data if possible before
replacing the CMU.
Important Note
• Document date and time of the condition.
• Document customer device Brand/Model/
Model Number/software version on the repair
order.
○
Fail
Go to step 10.
Go to step 11.
10
Is the connector for the Speaker(s)
that failed inserted correctly?
Yes
No
Insert the connector correctly.
11
Is the connector for the amplifier
inserted correctly?
Yes
Go to step 12.
No
Insert the connector correctly.
12
Are the CMU connectors inserted
correctly?
Yes
Go to step 13.
No
Insert the connectors correctly.
13
Swap speakers from good known
vehicle. Can you hear sound?
Yes
Check / Replace the speakers.
No
Go to step 14.
14
Swap the Amplifier from known good
vehicle. Can you hear sound?
Yes
Check / Replace the Amplifier.
No
Go to step 15.
Check / Replace the Remote Tuner
Review the following for possible cause of Remote
Tuner failure.
15
Swap the Remote Tuner from known
good vehicle. Can you hear sound?
Yes
• CX-30 - Review SA-035/21 and 09-020/21.
• Mazda3 - Review 09-020/21.
• CX-5 and CX-9 - Inspect Remote Tuner for
external water corrosion. Contact the Mazda
National Technical Hotline before attempting
Page 9 of 21
06/01/2023 11:50 AM tlawrenc
any repairs.
No
Go to step 16.
Check / Replace the CMU.
• Retrieve CMU log data if possible before
replacing the CMU.
Important Note
• Document date and time of the condition.
• Document customer device Brand/Model/
Model Number/software version on the repair
order.
○
Yes
16
Swap the CMU from known good
vehicle. Can you hear sound?
No
Repair/Replace wiring harness. Go to MGSS View
Content -> Wiring Diagram -> Body and Accessories > Entertainment System.
No. 5 Commander Switch Does Not Work
Step
Inspection
Result
Action
1
Using M-MDS, are any infotainment
system DTC's stored?
Yes
Go to MGSS for DTC diagnosis.
No
Go to step 2.
2
Does the Commander Switch work
correctly?
Yes
Go to step 3.
No
Go to step 4.
3
Does the Steering Wheel Switch work
correctly?
Yes
Normal Operation.
No
Go to step 5.
Yes
Go to SA-025/19.
No
Go to step 8.
4
Is fuse F13 missing?
Pass Go to step 6.
5
Go to MGSS "DIAGNOSTIC ASSIST
FUNCTION [CONNECTIVITY MASTER
UNIT (US)]"
Perform Functional Inspection/
Adjustment -> Steering SW Inspection > Did the Steering SW Inspection Pass?
Fail
Go to MGSS STEERING SWITCH INSPECTION.
6
Is the connector for the CMU inserted
correctly?
Yes
Go to step 7.
No
Insert the connector correctly.
7
Swap the CMU from known good vehicle.
Does the Steering Wheel Switch work
correctly?
Check / Replace the CMU.
- 💯【Conta.ct us for Support Directly】If you met any...
- 🔥🔥🔥【2026 AUTEL FLAGSHIP MK900BT MK900-BT, NEW...
- 🚗【3000+ ACTIVE TESTS (50➡3000+), SAME AS MS...
- 🚗【40+ HOT SERVICES FOR 150 MAKES (28+➡40+)】Full...
- 🚗【OE ALL SYSTEM DIAGNOSE, AUTO SCAN 2.0: SCAN LICENSE...
- 【TURN OFF CEL】 This AL319 car scanner diagnostic tool...
- 【EXTENSIVE APPLICATION】 Autel AL319 Compatible with...
- 【FOR END USER & DIYERS】 This error code reader AL319 is...
- 【USER-FRIENDLY DESIGN】 This OBD2 scanner and check...
- 【HIGH-QUALITY SERVICES】 12 months war.ranty from the...
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: SA-005-23a
Replacement Service Bulletin Number:
MFR Communication Date: 2023-05-31
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- 💯【Conta.ct us for Support Directly】If you met any issues about: Received a registered device/ Language Changing/ Function not Support/ VCI150 Blueto-oth connector malfunction/ Subscription Renewal, please conta.ct us via 📞autelsupply @outlook. com🛣️, we will provide perfect solution for you. ⚠️Note: Autel MK900BT comes with 1-Year Free Software Update, most features will remain active after update subscription expires. 1. For questions regarding updates or need more useful accessories, please conta.ct us via 📞autelsupply @outlook.com🛣️. 2. If the device fails to charge or turn on, please conta.ct us via 📞autelsupply @outlook. com🛣️, we will handle it promptly.
- 🔥🔥🔥【2026 AUTEL FLAGSHIP MK900BT MK900-BT, NEW MODEL OF MK808S MK900 MX900 MK808BT MX808S】2026 newest Autel MK900BT retains all features of MK808S MX900 MX808S MK808Z MK808Z-BT MK808K-BT, while EXTRA added powerful functions (value 2000+ bucks). The Pro-level Autel MK900BT makes a big leaps: 28+➡40+, 50+➡3000+ Active Tests, 2026 NEW✅CAN FD & DOIP protocols ✅Pre&Post diagnostic report ✅WIFI Print ✅Auto VIN&Auto Scan 2.0 ✅Scan VIN/ License ✅Battery Test (Need purcha.se BT506). If found defect or us.ed, please conta-ct 📞autelsupply @outlook. com📞 get perf-ect solut.ion.
- 🚗【3000+ ACTIVE TESTS (50➡3000+), SAME AS MS906 PRO】Differ from MS906BT MS906 MP808 MK808 MX808 MK808BT only 50 tests, Autel scanner MK900BT escaner automotriz professional offers 3000+ active tests, it can send command to ECUs & monitor actuators operation, quickly locating faulty components. Bidirectional scanning takes your diagnostics to the next level with menu lists 3000+ active tests, such as windows, rear mirrors, sunroof, wipers, fuel injector, coolant fans, radiator fan, AC clutch, coolant pump and more. Note: Functions are not available for all vehicles, please send vehicle VIN to us check compatibility.
- 🚗【40+ HOT SERVICES FOR 150 MAKES (28+➡40+)】Full level-up of OBD2 code reader MaxiCOM MK808S MK808 MK808Z MX808 MK808Z-BT with 28 service, Autel scan tool MK900BT/ MK900-BT offers 40+ maintenance service on 150+ brands 10,000 vehicles from 1996-2025-2026. Hottest Services like: Oil Reset, ABS Bleed, SAS Calibration, Injector Coding, SRS, Throttle Reset, Gearbox Reset, Battery Registration etc. Added 12+ advanced resets: rain slash light sensor reset, HVA.C/ SUS calibration etc. Welcome to send Vehicle Make>Model>Year>VIN>Functions you required to 📞autelsupply @ outlook . com📞 check compatibility.
- 🚗【OE ALL SYSTEM DIAGNOSE, AUTO SCAN 2.0: SCAN LICENSE/ AUTO VIN】2026 new release Autel MaxiCOM MK900-BT scan tool embodies all system diagnostic with its 8in display for all vehicles. Like Sna.p-on tools, it can perform ✔Read/Clear Codes✔Displays 5-in-1 Live Data✔Record & Playback Data✔Retrieve Info on all available systems like ABS ECM BCM SRS TCM etc. In addition to Auto VIN technology, Autel MK900BT adds Scan License/ Auto Scan 2.0 to identify vehicle’s VIN/ license, make, year, model, no need manual input; One-click WiFi Printing of Pre&Post comparison diagnostic reports, highlight root causes of problems.
- 【TURN OFF CEL】 This AL319 car scanner diagnostic tool supports Reading and Clearing DTCs, DTC Look Up, displaying Live Data, Freeze Frame & I/M Readiness, view vehicle information, etc., to figure out the root cause of the Check Engine Light (CEL) and turn it off, helping you catch any potential issues early and avoid excessive costs from unnecessary repairs.
- 【EXTENSIVE APPLICATION】 Autel AL319 Compatible with 7 languages (English, French, Spanish, etc.) and various post-1996 OBD II protocol vehicles (Toyota
, Nissan, Honda, Ford, etc.), this OBD II scanner provides accurate and fast diagnosis for worldwide car owners. - 【FOR END USER & DIYERS】 This error code reader AL319 is “plug and play” and comes with an easy interface. Even if you’re not familiar with vehicle repair, you can quickly take control of this obd2 scanner, and get the information you want.
- 【USER-FRIENDLY DESIGN】 This OBD2 scanner and check engine code reader features a patented One-Click I/M Readiness, TFT color display, built-in speaker, LED Indicator etc. The cable is long enough without being too long and getting in the way. No batteries are needed.
- 【HIGH-QUALITY SERVICES】 12 months war.ranty from the date of purchase and lifetime free update are offered by this Automobile OBDII scan tool. Welcome to contact us via Q&A, email, or hotline, and our after-sale-service team for technical support.
- 👨🎓Tips Before Order: 🚩All function are vehicle-specific - send VIN(17 digits)/Make/Model/Year & needed function via 📞auteldirect @ outlook . com📞 to check before order. 🚩Register tool: a) Follow on-screen guide; or b) Register em-ail on Autel we-b, then bind using SN(back of device) + verification code (find in tool settings or con-tact us via above em-ail). MK808BT PRO comes with ✅English, if need Spanish, please s.end device SN to add. ✅1-year war-ranty. ✅$150 worth 1yr fr-ee updates(New users: ignore renewal alerts). ⚠️📢Post-expiry: Most functions remain functional,for exclusions, refer to A+ Tips. ⚠️Fee for FCA AutoAuth Ga.teway(optional): $50/year, charged by AutoAuth,not Autel.
- 【2026 MK808BT PRO: Same as MK900BT, up of MK900 MX900 MK808S MX808S】Why pay more? 2026 MK808BT PRO functions as MK900BT and saves you 100USD. At same c0st, you now get diagnostic 8X faster and sup-port for 150+ models(1996-2026).💡Dramatically Improved: ✔️Faster & Smarter OS: Android 4.4➡ Android 11 ✔️More Services: 28+➡ 40+ ✔️Bidirectional Control: 50+➡ 3,000+ ✔️Enhanced Hardware: 1/32G➡ 4G/64G ✔️2.4GHz➡ 5G Dual WiFi ✔️Working range: 0.9m➡ 10m+ 🔋Battery test is clear on the large 7in display(BT506 required). 🔔Your Autel scanner is shipped brand new. For any issues(used, damaged, incompatible), e-m-a-il 📞auteldirect @ outlook . com📞 for priority resolution.
- 👍【New Next-Level Bidirectional Control, 50➡3000+ Tests, Covers Daily Repairs】Unlike the Autel DS708 DS808 MP808 MK808 and MX808 car diagnostic scanners, which offer only 50 functional tests, the Autel bidirectional scan tool MK808BT PRO is equipped with over 3000 active tests. These tests are widely used on car subsystems to help technicians quickly check if the car's actuators are functioning properly. Such as ABS, windows, rearview mirrors, wipers, sunroofs, fuel injectors, AC clutches, coolant fans, radiator fans, coolant pumps,etc. Tips📢: All functions are vehicle-specific, not universal to all vehicles,pls send VIN to 📞auteldirect @ outlook . com📞check compatibility before order.
- 👍【28+ Hot Services for 150+ Makes】Autel scan tool MK808BT PRO, upgraded with a BT VCI Mini(valued at 120USD), surpasses the old wired OBDII scanner MK808S MK900, by providing a convenient 33ft wireless working range, offering greater freedom and comfort compared to the 3.3ft cable limit of the MK900 MK808S MX808S car scanner. New features include VIN Check across different modules for comparison and 28+ resets, such as injector coding, ABS autobleed, Oil reset, SAS cali.bration, BMS, throttle relearn, suspension adjustments, etc. ⚠️📢Tips: Service functions are vehicle-specific, not universal to all vehicles, pls send VIN to 📞auteldirect @ outlook . com📞check compatibility before order.
- 👍【All Available Module Diagnosis - OE-Level Scanner】The OE versatile OBDII scan tool MK808BT PRO escaner para autos effectively works with all car systems: ABS, ECM, BCM, SRS, TCM,etc. It identifies vehicles via AutoVIN/manual input/select, like S.nap-on tools, it can ✔read/clear 7000+ DTCs, ✔read ECU info, ✔view 5-in-1 live data, ✔perform active tests, and ✔reset services. ✔Reports can be shared via QR-code and printed, working globally and 21+ multilingual. Supports 150+ US/EU/Asian makes, with ongoing updates from 2024 to 2026. ⚠️Note📢: The AutoVIN function usually works for post-2006 cars, depending on if the vehicle's VIN is stored in the ECU. You can always do manual input/select.
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.