Service bulletins for the 2025 Mazda CX-50
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.
162 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| SSPE0 Repair a | 2026-05-05. Service campaign. ENGINE. 2025MY - CX-50 Hybrid System Failure DTC P2530 UPDATED April 10, 2026 – STANDALONE PROCEDURE IS BELOW. The repair is a software update OR a check to make sure the software is at the current level with an ODR upload. DO NOT STOP AT THE “SOFTWARE UPDATE SUMMARY” screen in MDARS. You must continue to finish all steps in the entire procedure. You must have a “Software Update” entry present in MDARS for the PT_GWU showing current level OR updated. If you don’t have an entry for “Software Update”, bring the vehicle back in immediately for re-repair. Module to be reprogrammed or checked to make sure it is at the current level: 1. PT_GWU Section B: Repair Procedure Reprogram ECUs by MDARS and follow all steps as required. https://s3.us-east-1.amazonaws.com/tsd.mazdausa.com/MDARS/MDARS_ECU_ REPROGRAMMING_ PROCEDURE.pdf |
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| SA-031-26 | 2026-05-05. Service bulletin. STRUCTURE:BODY; UNKNOWN OR OTHER. DESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label. To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer Assistance Group) using VIN Plate Request Form available on One Mazda. To obtain a replacement vehicle certification label (located on the Bpillar or front door), contact your assigned DSM (District Service Manager) to place the order. If DSM contact information is not available, refer to the Dealer & Field Contact Directory. |
| SA-029-26 | 2026-05-05. Service bulletin. UNKNOWN OR OTHER; ENGINE; POWER TRAIN; SERVICE BRAKES. This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers. SCHEDULED MAINTENANCE Refer to the applicable Workshop Manual or Owner's Manual for vehicle -specific manufacturer scheduled maintenance. Workshop Manual - Refer to section 00-00 SCHEDULED MAINTENANCE. Owner's Manual - Refer to section 8 Maintenance and Care. b. Note: Please refer to the information below outlining the services not included in Mazda's Factory Scheduled Maintenance: IMPORTANT: Recommending fluid flushes when not necessary can lead to customer confusion and dissatisfaction. Fluid flushing for preventive maintenance purposes is strongly discouraged, unless otherwise specified in a published procedure (Owner’s Manual, Workshop Manual, Technical Service Bulletin, etc.). |
| SA-027-26 | 2026-05-05. Service bulletin. ELECTRICAL SYSTEM. This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-007/25 10/22/25, 06/02/25 and 02/03/25 DESCRIPTION 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 Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings (excluding i-STOP batteries e.g. Q-85, S-95) molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. 2. CCA (Cold Cranking Amps): CCA ratings are normally located on a sticker affixed to the top of the battery to indicate a battery’s Cold Cranking Amps. CCA rated batteries are supplied with domestically produced vehicles. NOTE: If an incorrect CCA rating is entered into the Mazda DCA-8000, it will result in a false result and invalid Warranty Code from the tester. This will also result in unnecessary replacement of batteries. TEST PROCEDURE 1. Connect the charger clamps to the appropriate battery posts. |
| SA-026-26 | 2026-05-05. Service bulletin. ENGINE. This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may fail prematurely. Metallic debris from the old engine (with catastrophic internal mechanical failure) may rest inside the intake manifold. When the new engine assembly is installed, debris in the intake manifold will be ingested into the new engine and cause internal damage. Clean the intake manifold internally to remove any debris from old engine before installing the new replacement engine assembly. If the intake manifold cannot be properly cleaned internally, replace it. |
| SA-021-26 | 2026-05-05. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. This Service Alert supersedes the previously issued SAs and bulletin(s) listed below: The changes are noted below in red. SA-010/23 02/09/23 DESCRIPTION Some customers may experience one or more electrical malfunctions after a vehicle body repair. A newly painted fender stay (2) may be causing a poor front harness (1) ground connection. The front fender stay (2) newly painted surface at ground point (3), where attachment bolt (4) is seated, may create a poor front harness ground connection. NOTE: DO NOT paint ground point (3) attachment bolt (4) is seated. NEWLY INSTALLED FRONT FENDER STAY NOTE: CAUTION: If the bolt (4) contact area (3) is painted when the front fender stay (2) is newly replaced, it could cause a malfunction in the PCM. Before painting a newly replaced part, protect the bolt (4) contact area (3) with masking tape (5) as shown in the figure. |
| SA-028-26 | 2026-05-04. Service bulletin. STEERING; SUSPENSION. DESCRIPTION Some vehicles may exhibit a clicking, popping, tapping or knocking noise from the front when turning left or right and accelerating. NOTE: The noise could occur at different steering wheel angles or power levels. Due to the insulating properties of the suspension and chassis, it can be difficult to determine which driveshaft is at fault by listening from inside the vehicle. See the attached video for an example of an outer CV joint clicking. Repair Procedure: Replace the affected driveshaft after confirming the source of the noise using chassis ears. Both driveshafts may be faulty; verify each side before replacement. |
| SA-012-26b | 2026-05-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. • Connected Vehicle Remote functions may fail. • The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) • U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) • U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT Are the following DTCs stored? YES: Proceed to next step. • NO: This service information does not apply. Continue troubleshooting using MGSS. • 3. Check for electrical devices in the vehicle such as a device connected to USB hub, Dash Cam, Insurance Device, FasTrak........ect. Are there any customer electrical devices in the vehicle? YES: Document customer device used, then go to the next step. • NO: Go to the next step. • 4. Clear the DTC's |
| SA-008-26a | 2026-05-04. Service bulletin. STRUCTURE:BODY. During PDI, an indentation in the rear bumper may be noticed, or in some cases, the customer may return after delivery to report the indentation. Follow the steps below to repair the concern. REPAIR PROCEDURE Check the rear bumper for an indentation. Repair bumper. |
| 30-001-26b | 2026-05-03. Service bulletin. POWER TRAIN. HYBRID SYSTEM FAILURE DISPLAYED ON METER WITH DTC P2530:12 This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 30-001/26 02/19/26 and 03/24/26 This technical service bulletin has been superseded to SSPE0. Concern Outline: When starting the vehicle, a Master Warning Light may turn on and a hybrid system failure message (Hybrid System Malfunction Have the Vehicle Inspected) may be displayed in the instrument cluster. The hybrid system may not activate, and the engine may not start, along with the DTC P2530:12 [Hybrid Control] and other numerous DTCs. Repair Outline: Reprogram the PT_GWU with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic And Repair Software (MDARS) by following TSB 30-001/26 repair instructions. |
| 09-014-26 | 2026-05-03. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience intermittent battery discharge. This may be caused by improperly installed door boots allowing water to enter into the central connectors C-22/C-23 (located near the A-pillar at the base of the left and right front doors), leading to corrosion in the connector. REPAIR PROCEDURE Replace the rear harness and the affected door harness with new ones, making sure to properly install the door boots. |
| 01-003-26a | 2026-05-03. Service bulletin. POWER TRAIN. This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 01-003/26 01/30/26 Some vehicles may exhibit a check engine light ON with DTC P20F8:00 stored. P20F8:00 - Swirl control circuit range/performance problem. In these cases, increasing temperature levels of the Swirl Control Valve (SCV) motor due to excessive actuation leads to duty limitation, causing poor openingangle response and resulting in a stuck judgment. To eliminate this concern, the PCM logic has been modified. REPAIR PROCEDURE Reprogram the PCM with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic and Repair Software (MDARS). Refer to MDARS ECU Reprogramming Procedure. |
| SSPE0 Warranty | 2026-04-04. Service campaign. ENGINE. Subject: Notification of Special Service Program (SSPE0) - 2025 CX-50 Hybrid - Hybrid System Failure Displayed on Instrument Cluster (DTC P2530:12) Dear Mazda Dealer Colleagues, Mazda Motor Corporation has decided to conduct a Special Service Program on certain 2025 CX-50 Hybrid vehicles. Concern Outline: When starting the vehicle, a Master Warning Light may turn on and a hybrid system failure message (Hybrid System Malfunction Have the Vehicle Inspected) may be displayed in the instrument cluster. The hybrid system may not activate, and the engine may not start, along with the DTC P2530:12 [Hybrid Control] and other numerous DTCs. Repair Outline: Reprogram the PT_GWU with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic And Repair Software (MDARS) by following TSB 30-001/26 repair instructions. ACTION ITEM - STOP DELIVERY: All dealer inventory types: New, Certified Pre-Owned, or Used can be sold but not delivered until repaired. There are approximately 50 new vehicles in dealer stock and/or in transit to dealers. All affected dealer inventory types with this SSP must be repaired prior to delivery. The number of affected units at your dealership can be seen in Inventory & Sales 2.0 in eMDCS and VIN list (via an internal MNAO campaign reporting) will also be provided to your District Service Manager by 5pm (Pacific Time) on March 24, 2026. Owner Notification: Mazda will notify owners of affected vehicles no later than April 24, 2026 or earlier. Vehicles will display in eMDCS as “Open” on March 24, 2026 and all vehicles can be repaired immediately. |
| SSPE0 Repair | 2026-04-04. Service campaign. ENGINE. Subject: Notification of Special Service Program (SSPE0) - 2025 CX-50 Hybrid - Hybrid System Failure Displayed on Instrument Cluster (DTC P2530:12) Dear Mazda Dealer Colleagues, Mazda Motor Corporation has decided to conduct a Special Service Program on certain 2025 CX-50 Hybrid vehicles. Concern Outline: When starting the vehicle, a Master Warning Light may turn on and a hybrid system failure message (Hybrid System Malfunction Have the Vehicle Inspected) may be displayed in the instrument cluster. The hybrid system may not activate, and the engine may not start, along with the DTC P2530:12 [Hybrid Control] and other numerous DTCs. Repair Outline: Reprogram the PT_GWU with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic And Repair Software (MDARS) by following TSB 30-001/26 repair instructions. ACTION ITEM - STOP DELIVERY: All dealer inventory types: New, Certified Pre-Owned, or Used can be sold but not delivered until repaired. There are approximately 50 new vehicles in dealer stock and/or in transit to dealers. All affected dealer inventory types with this SSP must be repaired prior to delivery. The number of affected units at your dealership can be seen in Inventory & Sales 2.0 in eMDCS and VIN list (via an internal MNAO campaign reporting) will also be provided to your District Service Manager by 5pm (Pacific Time) on March 24, 2026. Owner Notification: Mazda will notify owners of affected vehicles no later than April 24, 2026 or earlier. Vehicles will display in eMDCS as “Open” on March 24, 2026 and all vehicles can be repaired immediately. |
| SSPE0 Dlr Ltr | 2026-04-04. Service campaign. ENGINE. Subject: Notification of Special Service Program (SSPE0) - 2025 CX-50 Hybrid - Hybrid System Failure Displayed on Instrument Cluster (DTC P2530:12) Dear Mazda Dealer Colleagues, Mazda Motor Corporation has decided to conduct a Special Service Program on certain 2025 CX-50 Hybrid vehicles. Concern Outline: When starting the vehicle, a Master Warning Light may turn on and a hybrid system failure message (Hybrid System Malfunction Have the Vehicle Inspected) may be displayed in the instrument cluster. The hybrid system may not activate, and the engine may not start, along with the DTC P2530:12 [Hybrid Control] and other numerous DTCs. Repair Outline: Reprogram the PT_GWU with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic And Repair Software (MDARS) by following TSB 30-001/26 repair instructions. ACTION ITEM - STOP DELIVERY: All dealer inventory types: New, Certified Pre-Owned, or Used can be sold but not delivered until repaired. There are approximately 50 new vehicles in dealer stock and/or in transit to dealers. All affected dealer inventory types with this SSP must be repaired prior to delivery. The number of affected units at your dealership can be seen in Inventory & Sales 2.0 in eMDCS and VIN list (via an internal MNAO campaign reporting) will also be provided to your District Service Manager by 5pm (Pacific Time) on March 24, 2026. Owner Notification: Mazda will notify owners of affected vehicles no later than April 24, 2026 or earlier. Vehicles will display in eMDCS as “Open” on March 24, 2026 and all vehicles can be repaired immediately. |
| SA-014-26 | 2026-04-02. Service bulletin. ENGINE. This Service Alert supersedes the previously issued SA(s) and TSB(s) listed below: The changes are noted in Red. SA-035/24 05/31/24 DESCRIPTION There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small coolant leak from the bleed hole. This Service Alert is to inform you about the water pump sealing mechanism and the criteria if replacement is necessary or not. A mechanical seal (A) is used for the water pump. This mechanical seal can seal coolant (B) by sliding a mating ring (C) against a seal ring (D). When the sliding surface temperature of the mechanical seal is more than 248 °F (120 °C) while driving, a small amount of steam (E) is leaked and bleeds through the bleeding hole (F). After drying, the steam leaves a green coolant deposit near the water pump bleed hole (F). This is a normal condition and does not require water pump replacement. The water pump should only be replaced if there is an accumulation of crystallized coolant near the bleed hole. When you encounter a water pump with coolant seepage marks, decide to replace it or not based on the following criteria using sample photos. NOTE: During the initial period of use*, the sliding surfaces of the seals may not yet be fully settled, which can temporarily increase the amount of leakage. Continued use will allow the surfaces to settle, reducing the leakage. Replacing parts that are already settled with new ones will increase the leakage again until the new parts become conditioned. Therefore, replacement should be avoided in this initial period of use. *As a guideline, this applies to vehicles with less than 1,860 miles (3000 km) of mileage. |
| SA-012-26a | 2026-04-02. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-012/26 02/26/2026 DESCRIPTION Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT REPAIR PROCEDURE 1. Verify the concern. 2. Check if any of the following DTCs are stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT Are the following DTCs stored? YES: Proceed to next step. NO: This service information does not apply. Continue troubleshooting using MGSS. 3. Check for electrical devices in the vehicle such as a device connected to USB hub, Dash Cam, Insurance Device, FasTrak........ect. Are there any customer electrical devices in the vehicle? YES: Document customer device used, then go to the next step. NO: Go to the next step. 4. Check for a Navi SD Card. Is the vehicle equipped with a Navi SD Card? YES: Replace the Navi SD Card. NO: Go to next step. 5. Complete the Dealer Connected Vehicle Questionnaire. 6. Collect CMU log data. Go to Infotainment/TCU --> Collecting CMU Log Data --> CMU Log Data Retrieval Instructions 7. Collect TCU log data. Go to Infotainment/TCU --> TCU Log Data Retrieval Instructions --> CMU Log Data Retrieval Instructions 8. Contact Hotline for additional assistance. 9. Release the vehicle to the customer. NOTE: This concern is currently under investigation |
| 30-001-26a | 2026-04-02. Service bulletin. ENGINE; UNKNOWN OR OTHER. DESCRIPTION Hybrid system failure displayed on meter with DTC P2530:12. (This TSB has been superseded to SSPE0). REPAIR PROCEDURE 1. Verify the customer concern. 2. Reprogram the PT_GWU with the Mazda Modular Diagnostic System (M-MDS), using Mazda Diagnostic And Repair Software (MDARS). Refer to MDARS ECU Reprogramming Procedure. WARNING: During module reprogramming, the engine cooling fan may turn on and off automatically. Keep hands, tools, and any objects clear of the cooling fan and other moving components in the engine bay during the reprogramming procedure. NOTE: Be sure to submit Diagnostic Information (ODR) data as it is a required item and will be checked during warranty claim submission. Instructions can be found under M-MDS -> MDARS (Uploading Diagnostic Information (ODR) Data). 3. Clear any other DTC. 4. Verify the repair by starting the engine (READY ON) and confirming there is no CHECK ENGINE light ON or abnormal warning lights present. |
| SA-012-26 | 2026-03-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-060/25 12/16/25 Some customers may experience a message "TCU Malfunction. Have the Vehicle Inspected" in the instrument cluster. Additional symptoms that may occur: Connected Vehicle One Time Passcode (OTP) may fail. Connected Vehicle Remote functions may fail. The following DTC's may be stored: B1252:87-8B:TCU - COMMUNICATION ERROR WITH CONNECTIVITY MASTER UNIT (CMU) U0198:00-03:CMU - COMMUNICATION ERROR WITH EMERGENCY CALL UNIT/TELEMATICS COMMUNICATION UNIT |
| SA-008-26 | 2026-03-04. Service bulletin. STRUCTURE:BODY. This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-041/25 10/31/25 and 09/10/25 During PDI, an indentation in the rear bumper may be noticed, or in some cases, the customer may return after delivery to report the indentation. Follow the steps below to repair the concern. |
| 30-001-26 | 2026-03-03. Service bulletin. ENGINE. This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 30-001/25 06/30/25 and 05/15/25 Some customers may experience a hybrid system failure message appearing on the meter and the engine does not start, along with other numerous DTCs. This is caused by improper logic of the Powertrain Gateway Unit. To eliminate this concern, the control software of Powertrain Gateway Unit has been modified. |
| 04-001-26 | 2026-03-03. Service bulletin. SERVICE BRAKES. This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 04-001/25 02/06/25 Some vehicles may experience the front inner brake pads wear out faster than the outside. This accelerated pad wear may be caused by dirt and sand easily adhering to the inner friction surface of the disc while driving. To eliminate this concern, the shape of the dust cover and the front brake pad chamfer shape have been changed. |
| SA-005-26 | 2026-02-03. Service bulletin. UNKNOWN OR OTHER. There are currently 2 methods for cutting a new auxiliary key blank. A. Auxiliary Key Trace Cut Method • B. Auxiliary Key Code Cut Method 2019 and newer models require a 10-digit key code to accurately cut keys • 5-digit codes CANNOT be provided for 2019 and newer vehicles (the traditional 5-digit code from the key tag or driver's door lock cylinder is not sufficient and will not be issued for key cutting on these models). • Only Mazda-approved key cutting machines can process these 10-digit codes. • Many older key machines do not support 10-digit codes and cannot be updated to do so. In these cases, dealers will need to purchase one of the newer Mazda-approved key cutting machines capable of handling this requirement. • For a list of current Mazda-approved machines and purchasing options, refer to the Mazda Dealer Equipment Program or view the current Mazda approved key machines below. |
| SA-004-26 | 2026-02-03. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY. Some customers may complain that a door beltline molding is loose, fell off, or is missing. |
| SA-002-26 | 2026-02-03. Service bulletin. WHEELS. Some customers may complain that the tire sidewalls are distorted or "damaged". Sidewall waviness/indentations/undulations are common on radial tires and are more noticeable on tires with taller sidewalls. The higher the tire pressure, the more noticeable the effect will be. Be sure to set the tire pressures at the recommended tire pressure on the vehicle tire label. Sidewall indentations are a cosmetic condition that does not affect the performance of the tires. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.