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May 7, 2026 Over-the-air update

Quality improvements include: -Updates the Restraint Control Module to prevent a potential internal fault...

Ford technical service bulletin RCM-26.4.2.1 SuperDuty for 2026 Ford F-250 SD, 2026 Ford F-350 SD and 2026 Ford F-450 SD and others.

Bulletin number
RCM-26.4.2.1 SuperDuty (RCM-26.4.2.1)
Component
Seat belts
Summary
Quality improvements include: -Updates the Restraint Control Module to prevent a potential internal fault that may cause a warning light to illuminate for one key cycle

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