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.
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Only bulletins with component: Engine are shown. Show all
| SA-038-26a | 2026-09-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ENGINE; EXTERIOR LIGHTING. This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 06/15/26 DESCRIPTION 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 functions inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Index MAZDA CONNECT 2 Center Display Status Icon MAZDA CONNECT 3 Center Display Status Icon Remote Engine Start Will Not Function Remote Engine Start Function Will turn engine OFF Customer Subscription Status TCU Communication Line Status |
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| SA-048-26 | 2026-09-04. Service bulletin. ENGINE. Some vehicle may exhibit the CHECK ENGINE light on with DTC P0524 (Engine oil pressure control system: Oil pressure decrease) and no abnormal engine noise. This may be caused by a malfunction of the oil pressure control valve (located at the rear of the engine block near the oil filter) due to machining contamination inside the electromagnet sleeve and the solenoid plunger remaining during manufacturing. This contamination is affecting the OCV operation when oil pressure control is requested by the PCM. REPAIR PROCEDURE Perform the WSM inspection for P0524. |
| SA-047-26 | 2026-09-04. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. Some customers may experience: The fuel fill door will not release until multiple button applications. The gas pump dispenser/nozzle is clicking off during refueling before the tank is full and it may take 1/2 to 1 gallon at a time. Check engine light on with DTCs. REPAIR PROCEDURE 1. Verify the customer concern. 2. Replace the evaporative shut valve according to the WSM on MGSS (FUEL SHUT-OFF VALVE REMOVAL/INSTALLATION [CW]). |
| SA-042-26 | 2026-07-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-017/25 12/16/25, 09/08/25, 07/14/25, 05/15/25 and 03/21/25 DESCRIPTION Mazda Connect Frequently Asked Questions (FAQ) Index General Questions MAZDA CONNECT Indication Setup and Getting Started Dealer Processes Registration / Enrollment / Take-Over Customer Subscription Status WI-FI General Informatio Opening the TCU Communication Line WI-FI How-To Conditions for Remote Engine Start Will Not Function WI-FI Trial Period Conditions for Remote Engine Start Function Will turn engine OFF Interacting With The App TCU Communication Line Status Service Issues Educational Videos Troubleshooting Resources MyMazda App Error Codes Customer Opt-Out |
| SA-041-26 | 2026-07-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay™/ Android Auto™ will not connect) 6. Over-sized wheels/tires (incorrect GPS location) 7. DTC C0023:14 8. Decorative trim and/or cover on the START/STOP ENGINE button Example 1: Some electrical devices connected to the DLC-2 connector by insurance or mobile phone companies may cause: Battery discharge. The device may disrupt the CAN system battery saver mode. • IDS/MMDS will not communicate with the vehicle due to poor DLC-2 connection. The aftermarket device may cause DLC-2 female terminals to spread open. |
| 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 |
| 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-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. |
| 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. |
| 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. |
| 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. |
| 01-003-26 | 2026-02-03. Service bulletin. ENGINE. Some vehicles may exhibit a check engine light ON with DTC P20F8:00 stored. P20F8:00 - Swirl control circuit range/performance problem. • The DTC is caused by overheating of the Swirl Control Valve (SCV) motor which leads to duty limitation, causing poor openingangle response and resulting in stuck judgment. To eliminate this concern, the PCM control software has been modified. |
| SA-023-25c | 2026-01-04. Service bulletin. ENGINE; EXTERIOR LIGHTING; 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 • 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Page |
| SA-052-25 | 2025-12-05. Service bulletin. ENGINE; POWER TRAIN. Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked. For this concern, inspect the vehicle for any trace of a fluid or oil leak and use the following examples as a guide to determine if it is severe enough to require a repair, or just to clean the area and monitor it at the next service. Examples of residue or seepage that may not be considered a leak and that may not require repair based on splash shield inspection. |
| SA-046-25 | 2025-11-05. Service bulletin. ENGINE. Some engine components like the timing chain cover and oil pan on the CX-50 Hybrid require the use of Threebond 1207B during installation. This sealant should be locally sourced when needed. NOTE: The following link is provided as a convenient sourcing option. https://www.amazon.com/Three-Bond-Performance-Adhesion-Gasket/dp/B008BYPRRI |
| 01-006-25 | 2025-11-05. Service bulletin. ENGINE. On some vehicles, the engine oil appears to be milky white during engine oil inspection or replacement. This is caused by moisture in the blow-by gas mixing with the engine oil when driving repeatedly for short distances in extremely low temperatures. NOTE: Inform the customer that the vehicle engine needs to to warm up to normal operating temperature in extremely cold temperatures to remove the moisture in the engine. Oil change will be covered one time only under Warranty. Customers having this concern should have their vehicle repaired using the following repair procedure. |
| SA-023-25b | 2025-09-04. Service bulletin. UNKNOWN OR OTHER; ENGINE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING. 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 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". |
| SA-023-25a | 2025-08-05. Service bulletin. EXTERIOR LIGHTING; ENGINE; UNKNOWN OR OTHER. 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 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". |
| SA-030-25 | 2025-07-02. Service bulletin. ENGINE. A tapping/rattling noise may be noticed from the valve train area. This operating condition can occur on new vehicles which have been delivered to Mazda dealers (due to loading and unloading from transport trucks or customers moving their vehicles in and out of their garages to wash the vehicle, etc.). This condition may also occur if the engine is not allowed to warm up after multiple cold starts. |
| 30-001-25a | 2025-07-01. Service bulletin. ENGINE; UNKNOWN OR OTHER. Some customers may experience a hybrid system failure message appearing on the meter and the engine does not start, along with other numerous DTCs. |
| SA-023-25 | 2025-06-05. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ENGINE; EXTERIOR LIGHTING. 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 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". |
| 30-001-25 | 2025-06-04. Service bulletin. ENGINE; POWER TRAIN. Some customers may experience a hybrid system failure message appearing on the meter and the engine does not start. 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. Customers having this concern should have their vehicle repaired using the following repair procedure. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.