Recall 24V816 affects 38,926 2024 Mazda CX-90 vehicles because i-stop software can keep the engine from restarting. Repair is free at any franchised Mazda dealer.
Mazda is recalling 38,926 of its 2024 CX-90 SUVs because a software issue in the i-stop idling stop system can keep the engine from restarting after it shuts off at a stop. An engine that fails to restart increases crash risk, and Mazda dealers will complete the recall repair free of charge.
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What's wrong?
The powertrain control module, or PCM, is the computer that coordinates engine operation in the 2024 Mazda CX-90. The battery energy control module, or BECM, manages the hybrid battery system. Together, these modules help the mild hybrid system assist the engine and support the i-stop feature, which shuts the engine off at idle to save fuel.
On affected CX-90 vehicles, improper software in the PCM and BECM interferes with the hybrid battery assist function. When i-stop turns the engine off, the incorrect program setting leaves the system unable to restart the engine as intended. That can cause the engine to stall and leave the vehicle without motive power.
Before this happens, the engine warning light illuminates and a "Hybrid System Malfunction" message appears. Warning chimes can sound at the same time, giving the driver a clear sign that the hybrid control system has faulted.
Who's affected?
The scope is split between automatic transmission control and high-voltage traction battery control, with both parts tied to the same vehicle build period.
| 2024 Mazda CX-90 | automatic transmission |
|---|---|
| 2024 Mazda CX-90 | high-voltage traction battery |
| Units affected | 38,926 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific SUV is included.
What's the safety risk?
An engine that fails to restart increases the risk of a crash, especially when the vehicle is stopped in traffic and cannot move as expected. The warning signs are an engine warning light, a "Hybrid System Malfunction" message, and warning chimes. Repair is free at any franchised Mazda dealer.
What should I do?
- Check your VIN to confirm your 2024 Mazda CX-90 is included in this recall.
- Contact your nearest franchised Mazda dealer to schedule the free PCM and BECM software update that fixes the i-stop restart problem.
- Bring the recall notice if Mazda has mailed one. If not, reference recall number 24V816 when you call.
- Drive cautiously until the repair. Leave extra room and pull over safely if the engine does not restart after i-stop shuts it off.
What happens at the repair
At the dealer, a Mazda technician updates the powertrain control module and battery energy control module software that controls engine restart after i-stop shuts the engine off. The recall repair is available now, and Mazda covers the software update at no charge. Mazda is not offering a separate reimbursement program because all affected vehicles are under full warranty coverage. If you have prior repair paperwork for the same condition, ask the service desk how the warranty applies.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| October 31, 2024 | NHTSA published the recall |
|---|---|
| November 5, 2024 | Dealer notification began |
| November 5, 2024 | Dealer notification ended |
| December 19, 2024 | Owner notification mailed |
| December 30, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| December 30, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V816?
Recall 24V816 covers 38,926 2024 Mazda CX-90 vehicles with software that can prevent the engine from restarting after i-stop turns it off. An engine that fails to restart increases crash risk, and Mazda dealers will reprogram the PCM and BECM software for free.
What should I do if my 2024 Mazda CX-90 is on this recall?
Check your VIN to confirm your specific CX-90 is included in recall 24V816. If it is, contact a franchised Mazda dealer to schedule the PCM and BECM software reprogramming. Reference Mazda recall number 7024J when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Mazda dealers will reprogram the powertrain control module and battery energy control module software free of charge.
What is the safety risk in recall 24V816?
The safety risk is that the engine can fail to restart after the i-stop system turns it off. If the CX-90 does not restart when the driver expects it to, the vehicle can become stuck in traffic or at an intersection, increasing crash risk.
When did Mazda notify owners about recall 24V816?
Mazda mailed owner notification letters on December 19, 2024. If you bought the CX-90 used or never received a letter, the VIN still decides whether the recall applies. Check your VIN, then call a Mazda dealer if your vehicle is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V816000 |
|---|---|
| Mazda customer service | 1-800-222-5500 |
| NHTSA recall # | 24V816 |
| NHTSA recall # (full) | 24V816000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Misc. Document (PDF)
- Download Owner Notice (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →