SYNC 3 Accessory Protocol Interface Module · 2019 Ford Expedition · serial URFO001000055
Customer reports reported symptom reproduced only under soak.
No fault found on the bench. Full functional sweep and 12-cycle thermal soak clean; reported symptom could not be reproduced. Recommend vehicle-side checks (harness, ground, battery health) before re-submission.
Verified after repair; unit cleared for quality release.
No parts replaced.