roadPilot
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- Apr 29, 2021
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- SE Michigan
- Vehicles
- 2026 F350 Platinum CCSB 6.7L PSD 4x4 6.75'
Ford Engineering did release supplemental instructions to several CSP's related to the Sync4 updates.Here we go again!
About a couple of hours later I get an email from the tech support division of Ford telling me to call my dealer and have them install the almost day long update. Well, that is what they did 6 week ago and it would not take. So we are back to square one with a still sick sync 4 system.
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Most module SW update "failures" are/were the result of the battery voltage being allowed to drop too low during the install.
The supplemental instructions were to fully charge the battery BEFORE they start programming and keep it on a charger (to keep the voltage above 12.5V to 12.8V) DURING programming.
If your dealership tried SW updates six weeks ago, that was before those supplemental instructions.
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