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Mazda CX-90 Recall 24V816: Engine may fail to restart after idle stop, raising crash risk

NHTSA campaign 24V816, reported October 31, 2024, 38,926 vehicles potentially affected.

What this recall means for you

On certain 2024 vehicles, the idling stop feature (i-stop) can shut off the engine, but a software issue may prevent it from restarting. An engine that will not restart can leave you stopped in traffic or unable to move out of a hazardous spot, which increases the risk of a crash.

The remedy is a free software update. Authorized dealers will reprogram the powertrain control module (PCM) and the battery energy control module (BECM). Owner notification letters were mailed December 19, 2024. You can also contact Mazda customer service at 1-800-222-5500, Option 6, and refer to Mazda recall number 7024J.

Check your vehicle identification number (VIN) for open recalls to confirm whether your car is affected, and schedule the free repair at an authorized dealer as soon as possible.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 24V816Mazda North American Operations
Component
ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM):SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Problem
Mazda North American Operations (Mazda) is recalling certain 2024 CX-90 vehicles. The engine may not restart after the idling stop feature (i-stop) turns off the engine due to a software issue.
Risk
An engine that fails to restart increases the risk of a crash.
Remedy
Dealers will reprogram the powertrain control module (PCM) and the battery energy control module (BECM) software, free of charge. Owner notification letters were mailed December 19, 2024. Owners may contact Mazda customer service at 1-800-222-5500 Option 6. Mazda's number for this recall is 7024J.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to www.nhtsa.gov.

Affected vehicles

Mazda CX-902024