U0277Lost Communication With Seat Control Module K
- Generic OBD-II code · Network
- How the car detects it
- Ford uses seat control module K for a second-row seat: on the 2025 Lincoln Navigator, SCMK drives the power seat behind the driver, in SSM 54226 called the rear left-hand power seat module. Its update SCMK-25.5.5.3 was meant to make that seat store its memory positions reliably, and SSM 54226 deals with second-row seats stuck in their longitudinal position, B167F:11 stored in SCMK or SCML, which moved again only after the configuration apps of both modules had been run in FDRS. U0277 itself, the lost-communication code for SCMK, appears in no public bulletin. If set, the left second-row seat cannot be adjusted electrically or recall memory positions; seats in front are unaffected. U0278 is the right-hand module, U0578 invalid data from SCMK.
- What you may notice
- Left second-row power seat does not move
- Memory positions of that seat not stored or recalled
- Likely causes
- LikelySeat harness or connector under the second-row seat strained or unplugged
- PossibleSCMK not configured or software update incomplete
- PossibleSeat module fuse or supply open
- RareSeat control module K internally faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.