Mazda bulletin SA-052-23
What it saysSome customers may experience any of the following: Multiple Warning Lights On Infotainment center display blank Engine no start unless the key transmitter is placed near the start button. NHTSA’s full summary ↓
Mazda filed this with NHTSA as a service bulletin dated Sep 11, 2023, received Oct 5, 2023, about the equipment adaptive/mobility. It names 1 model year (2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSome customers may experience any of the following: Multiple Warning Lights On Infotainment center display blank Engine no start unless the key transmitter is placed near the start button. Interior lights do not illuminate. DTC P2507:00 - PCM, PCM POWER SYSTEM: (LOW INPUT) stored. DTC U0156:00 - PCM, CAN communication system, Communication error with CMU (Connectivity Master Unit). This may be caused by Fuse F1 not fully seated or poor terminal tension.
Trouble codes it names: P2507 U0156
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SA-052-23 | Service bulletin | Sep 11, 2023 | 10243555 | PDF, 874 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 440 complaints with NHTSA since 2015. 153 of them name Engine, Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Vehicle is in normal mode with EV mode engaged, car is going 70mph and suddenly accelerator stops working and decelerates to ~60mph until vehicle suddenly aggressively switches to gas mode and accelerates again
2024 Mazda CX-90 · Engine · filed with NHTSA Jan 30, 2024
Hybrid system electrical leakage. Literally makes the car unusable. Dozens of examples on both Reddit and Facebook
2024 Mazda CX-90 · Electrical System · filed with NHTSA Feb 18, 2024
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the equipment adaptive/mobility
Source: same model, same component group11 other manufacturer communications filed against the Mazda CX-90 under the same component group (equipment adaptive/mobility), newest first. The eight newest are listed; the rest are on the Mazda list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SA-020-24a | Service bulletin | Apr 23, 2024 | The CX-70 and CX-90 have new and revised features that are different from previous models and may be difficult to understand. This Service A… |
| SA-009-24 | Service bulletin | Feb 8, 2024 | Frequently Asked Questions (FAQ): General Questions, Reception Level Inspection, Setup and Getting Started, Dealer Processes, Registration /… |
| SA-006-24 | Service bulletin | Feb 1, 2024 | Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure. |
| 09-001-24 | Service bulletin | Jan 10, 2024 | Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU… |
| SSPD1e | Service bulletin | Dec 27, 2023 | SSPD1 - 2024 CX-90 (All) - Side Radar Smart Brake Concern: On certain CX-90 vehicles, while driving near any objects with high reflection in… |
| SSPD1c | Service bulletin | Dec 13, 2023 | SSPD1 - 2024 CX-90 (All) - Side Radar Smart Brake Concern: On certain CX-90 vehicles, while driving near any objects with high reflection in… |
| 15-002-23 | Service bulletin | Oct 9, 2023 | Some vehicles may exhibit one or both of following, making the customer uncomfortable with the operation; 1. Sometimes the steering assist f… |
| 16-009-23 | Service bulletin | Sep 20, 2023 | Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA11_10010).… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mazda, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mazda SA-052-23 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the SA-052-23 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does SA-052-23 cover?
The manufacturer filed it against 1 model year: 2024 Mazda CX-90. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.