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Service bulletins for the 2022 Mazda Mazda3

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

436 on file from NHTSA, as of 2026-10-19.

About U3000 on the 2022 Mazda Mazda3: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: U3000 are shown. Show all

Bulletins, newest first
15-001-252025-03-04. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some vehicle may experience the i-ACTIVSENSE/ALH warning lights on and a system error messages may be found in the center display as well. DTC U3000:04 (FSC) is stored in memory • DTC U3000:04 (FSC) - Forward sensing camera (FSC) internal malfunction • This may be caused by a hardware failure in an internal device of the FSC that results in the malfunction detection. To eliminate this concern, the production process of the FSC has been modified.
09-001-24g2024-10-05. Service bulletin. ELECTRICAL SYSTEM. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:00-TCU (Emergency call unit/telematics communication unit internal malfunction) or U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
09-001-24e2024-08-02. Service bulletin. ELECTRICAL SYSTEM. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
09-001-24d2024-07-05. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
09-001-24c2024-05-04. Service bulletin. UNKNOWN OR OTHER. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
09-001-24b2024-04-03. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
09-001-24a2024-03-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.
09-001-23a2024-01-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Some vehicles may exhibit an “In Vehicle Network Malfunction” message appearing in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored after the connected service contract has been discontinued. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified
SA-027-23c2023-12-05. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER; EQUIPMENT ADAPTIVE/MOBILITY. In-Vehicle Network Malfunction error message and Master Warning light ON with DTC U3000:04 (Telematics communication unit internal malfunction) stored.
SA-027-23a2023-07-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. IN-VEHICLE NETWORK MALFUNCTION AND MASTER WARNING LIGHT ON. DTC U3000:04 STORED (DOES NOT APPLY TO 09-001/23)
SA-027-232023-05-05. Service bulletin. ELECTRICAL SYSTEM. In-Vehicle Network Malfunction error message. DTC U3000:04 (Telematics communication unit internal malfunction) stored. NOTE: The vehicle does not apply to 09-001/23 because CSP04 is not "OPEN".
09-001-232023-02-02. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may exhibit DTC U3000:04 (Telematics communication unit internal malfunction) stored after the connected service contract has been discontinued (only vehicles in which the customer opted out of CV services are affected - CSP04). This is caused by improper control software of telematics communication unit. To eliminate this concern, the control software of telematics communication unit has been modified.
16-001-22d2022-12-02. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_12004 or later). Ver. 7000C0A-NA01_12004 fixes these software errors (bugs): * Album artwork may not appear when playing music using an USB connected iPhone. * The center display may turn black when the gear is shifted from reverse position to parking position. * Screen freezes and goes to white screen, then the system reboots. * Steering wheel switches and commander switches cannot control the audio system. * DTC U3000:49 is stored which may be accompanied with following symptoms. - No sound comes out from the speakers. - Audio source selection is unavailable. * When using the navigation with head-up mode, the vehicle icon rotates. * Beep sounds every after couple of minutes. * Language setting may not be accepted correctly. * The audio track may not pause when pressing the mute button. * The system reboots. * The screen may turn black when trying to play a video file in the USB connected device.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.