Network, generic

U024B Lost Communication With Seat Control Module G

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

Ford assigns seat control module G to the driver's multi-contour seat (SCMG), which runs massage and lumbar adjustment. Two Ford bulletins name U024B. TSB 19-2293, later 19-2390, covers multi-contour seats from the 2013 MKZ to 2019 F-150, Explorer, Expedition and Navigator: massage and lumbar respond only now and then from the switch or touchscreen, sometimes with B1471, U024B or U024C, because terminals fret in the SCMG and SCMH connectors; new pigtails and a rerouted harness fix it. SSM 53226 adds that on 2020–2021 F-Super Duty an SCMG software update by FDRS can misconfigure the module so the SYNC module (APIM) stores U024B; running the SCMG configuration app clears it. Expect driver massage and lumbar to drop out. The passenger unit H is U024C; invalid data from G are U054C.

Likely causes

Fretting corrosion in the SCMG connector terminals under the seat
Module misconfigured after a software update (configuration app not run)
Seat harness strained by seat travel or poor routing
Multi-contour seat module internally faulty

Symptoms

  • Driver seat massage and lumbar inoperative or intermittent
  • Seat settings on the SYNC screen without response
  • B1471 stored alongside

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–700
Time0.3–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

seat control module gvehicle bus wiring

Related codes

U024CU054CU0208U024D

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.