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Mazda CX-70 and CX-90 Electrical Unit Software Issue
medium How serious is it? About this label
A dash electrical unit that is not functioning properly increases the risk of a crash, according to the notice. The notice does not tell owners to stop driving.
Key facts
| NHTSA campaign number | 24V814000 |
|---|---|
| Reported to NHTSA | Oct 31, 2024 |
| Manufacturer | Mazda North American Operations |
| Part affected | Electrical System:software |
| Vehicles covered | 2 model/year combinations, model years 2025 |
| Do-not-drive advisory | No |
| Park-outside advisory | No |
| Repair | Free at any franchised dealer |
What's wrong, in plain English
In some Mazda CX-90 and CX-70 vehicles equipped with a Dash Electrical Supply Unit, several features may not work correctly during startup. This can affect the defroster, the seat belt warning, the 360-degree view monitor, and, on plug-in hybrid models, the system that cools the high-voltage battery.
What you should do
2. Contact a Mazda dealer to have the Dash ESU reprogrammed with updated software; call Mazda customer service at 1-800-222-5500, option 6.
3. The repair is free.
Where do I find my VIN, and what do I tell the dealer?
Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 24V814000. More in how recalls work.
Affected vehicles (2)
Who to contact
Mazda — official Mazda recall lookup
Customer service: 1-800-222-5500
The bigger picture
- Mazda Electrical System Recalls Affect Warning Displays and Drive Power · all 5 Mazda recalls in this area
Other Mazda CX-70 recalls
- Sep 2, 2025Mazda CX-70, CX-90 Fuel Gauge May Read Wrongmedium
- Oct 31, 2024Mazda CX-70 Hybrid Inverter Software May Cut Powerhigh
- Oct 31, 2024Mazda CX-70 Control Module Software May Cut Powerhigh
Official notice
- Component
- ELECTRICAL SYSTEM:SOFTWARE
- Summary
- Mazda North American Operations (Mazda) is recalling certain 2024-2025 CX-90 and 2025 CX-70 vehicles equipped with a Dash Electrical Supply Unit (ESU). During vehicle startup, the defroster, seat belt warning, 360° view monitor functions, and the PHEV high-voltage battery cooling system may not function properly.
- Safety risk
- An ESU that does not function properly, increases the risk of a crash.
- Remedy
- Dealers will reprogram the Dash ESU with improved software, free of charge. Owner notification letters were mailed December 18, 2024. Owners may contact Mazda customer service at 1-800-222-5500 Option 6. Mazda's number for this recall is 7124J.
Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.