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Service bulletins for the 2024 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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
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.
09-030-242024-07-05. Service bulletin. ELECTRICAL SYSTEM. Some customers may experience the following symptoms: No sound from some audio sources (AM, FM, SiriusXM®) after turning the ignition on. Radio station selection (AM, FM, SiriusXM®) changes unintentionally after turning the ignition on. Audio source cannot be changed. Diagnosing according to MGSS online does not solve the problem. These concerns may be caused by the remote tuner not operating properly under certain situations. To eliminate these concerns, the remote tuner control software 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.
SA-032-242024-06-04. Other. ELECTRICAL SYSTEM. The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission
SA-031-242024-06-04. Other. ELECTRICAL SYSTEM. This service information provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the batteries periodically according to the repair procedure.
09-029-242024-06-03. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. Some customers may experience the rear audio subwoofer sound pauses intermittently at a high volume level. When the volume level is lowered, the subwoofer audio sound returns to normal. The actual volume level where the concern occurs may vary depending on the audio source. If the audio source consists of many low frequency (40 - 70 Hz) sounds, the concern may occur at volume level 35 or higher. This concern is due to the improper control software of the audio amplifier (Bose® audio system). To eliminate this concern, the control software has been modified.
09-027-242024-06-03. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. Some customers may experience that after the doors are locked and the Fuel Door Lock Delay with MAZDA CONNECT has passed (default setting is 90 seconds), the fuel-filler lid does not lock, but can be opened when pressed. NOTE: The fuel-filler lid does not lock immediately after the doors are locked, but after the time set in the Fuel Door Lock Delay (0, 30, 60, 90, and 120 seconds). Although the root cause has not been identified, the vehicle should be repaired by adjusting the fuel-filler lid opener cable position when there is a customer complaint.
07-003-242024-05-04. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some customers may complain that the ambient temperature on the instrument cluster is displayed more than 50 °F (10 °C) lower than the actual temperature, resulting in insufficient performance of the air conditioning. This is caused by inappropriate soldering in the ambient temperature sensor. To eliminate this concern, the soldering process has been enhanced at the supplier.
09-024-242024-05-04. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. Some customers may experience that the liftgate or the trunk lid will not unlock even when the vehicle is parked and the ignition is off. If the engine is running (POWER ON) or the ignition is turned to on (READY ON), it will unlock. To eliminate this concern, the control software of the DSC HU/CM (or the electronically controlled brake unit) has been modified.
09-023-242024-05-04. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES. Some customers may experience one or both of the following symptoms while locking and unlocking the doors works fine using the remote transmitter. Symptom 1: The touch sensor of the front door outer handle does not lock the doors after rain and/or car washing, even though unlocking is possible. Symptom 2: The touch sensor of the front door outer handle does not unlock the doors.
SA-021-242024-05-03. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT. Some customers may complain about intermittent audio no sound from the MAZDA CONNECT infotainment system and/or static noise from the speakers. The concern may be reproduced by tapping on the dash pad near the MAZDA CONNECT center display and the following DTC's may be stored. U0186:08 Communication error with audio amplifier U2145:08 Communication error with remote tuner (RT) U2145:02 Communication error with remote tuner (RT)
SA-017-242024-04-03. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Some customers may complain about any of the following: 1. Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative. Engine Start / Stop, Door Lock / Unlock, Lights ON / OFF, Climate control
15-002-242024-04-03. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. Some vehicles may experience the vehicle speed decreasing unintentionally while using MAZDA Radar Cruise Control (MRCC). This may occur when a vehicle in the adjacent lane is misidentified as being in its own lane, and the MRCC controls decelerate accordingly. This concern is caused by improper control software of the Vehicle Control Module (VCM). To eliminate this concern, the VCM control software 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.
SA-009-24a2024-03-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Frequently Asked Questions (FAQ): General Questions, Reception Level Inspection, Setup and Getting Started, Dealer Processes, Registration / Enrollment, TCU Activation, WI-FI General Information, Conditions for Remote Engine Start Will Not Function, WI-FI How-To Conditions for Remote Engine Start Function Will turn engine OFF, WI-FI Trial Period, Deactivation Mode, Interacting With The App, Educational Videos, Service Issues, Resources, Troubleshooting Page.
SA-009-242024-03-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Frequently Asked Questions (FAQ): General Questions, Reception Level Inspection, Setup and Getting Started, Dealer Processes, Registration / Enrollment, TCU Activation, WI-FI General Information, Conditions for Remote Engine Start Will Not Function, WI-FI How-To Conditions for Remote Engine Start Function Will turn engine OFF, WI-FI Trial Period, Deactivation Mode, Interacting With The App, Educational Videos, Service Issues, Resources, Troubleshooting Page.
SA-006-242024-03-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
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.
SA-012-242024-03-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Some customers may experience a Bluetooth phone call with low volume from the phone side (caller can barely hear the other side). Be advised that Mazda is aware of the issue and is working on a resolution. This Service Alert will be revised when a fix is available. NOTE: Do not perform any repairs at this time.
09-003-242024-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Some vehicles may experience the opening sequence of the instrument cluster is not displayed after IG-ON. NOTE: Opening sequence of the instrument cluster refers to the display that occurs immediately after ignition is turned on. The vehicle model's logo is shown on the instrument cluster's LCD screen before transitioning to the speedometer display. The sequence also swings the analog meter needle to its maximum. This concern is caused by improper control software of the BCM. To eliminate this concern, the control software of the BCM control module has been modified. Customers having this concern should have their vehicle repaired using the following repair procedure. NOTE: CSSU regulation compliance: This Service Information provides the software modification and the software information according to United Nations Regulation on Cybersecurity (CS) and Software Updates (SU).
SA-025-23a2024-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. 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.
SA-021-23b2024-01-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE. Qi Wireless Charger symptom troubleshooting
SA-015-23e2024-01-06. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. Frequently Asked Questions (FAQ): General Questions Reception Level Inspection Setup and Getting Started Dealer Processes Registration / Enrollment TCU Activation WI-FI General Informatio Conditions for Remote Engine Start Will Not Function WI-FI How-To Conditions for Remote Engine Start Function Will turn engine OFF WI-FI Trial Period Deactivation Mode Interacting With The App Educational Videos Service Issues Resources Troubleshooting Page
SSPD1-D4a2023-12-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. RECALL 6223J, 6323J, SSPD1, SSPD2, SSPD3, SSPD4 - MULTIPLE CAMPAIGNS REPAIR PROCEDURE AND MULTIPLE MODULE REPROGRAMMING.
SA-071-23a2023-12-05. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. The A/T (Automatic Transmission) warning light is flashing in the instrument cluster at new car delivery, without any DTCs being present.

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