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U0577 Invalid Data Received From Lighting Driver Control Module D

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0577 is the code for invalid messages from lighting driver control module D, the last of the four-letter block; U0276 is its lost-communication partner. LED matrix drivers can be chained: TI's TPS92662 addresses up to 31 devices over one multi-drop UART line, can use CAN transceivers for a sturdier physical layer, and also drives sequential turn signals and animated daytime lights. Lincoln documents four driver modules, A to D, for the headlamps of the 2025 Navigator without saying where each one sits. No manufacturer publishes U0577. Corrupt status from module D may disable dynamic functions it handles, while the lamp can keep burning in its default mode. No MIL.

Likely causes

Driver module D software not at the level of the other lighting modules
Fault on the serial link between lighting controller and driver chips
Lighting driver control module D internally faulty

Symptoms

  • Sequential indicator or animated daytime light not working
  • Lamp lit only in a basic setting

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–1,800
Time0.3–3 h

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

Parts involved

lighting driver module d

Related codes

U0276U0576U0574

References: static.nhtsa.gov, ti.com.