U300A

RAM

Diagnostic Trouble Code (DTC) U300A-29

RAM

"Base led headlamp RT 25 MY HDCC Ignition DTC (U300A-29 Ignition Switch - Signal Invalid) in stored state for SLML and SLMR. All headlamps on the Heavy Duty with SW 24.43.00(Premium) or 24.44.00(Base) will show a U300A-29 -> Ignition Switch-Signal Invalid as a stored DTC. If you experience this condition, please clear the DTCs o…

FORD

Some 2023-2024 F-Super Duty vehicles equipped with a keyed ignition may exhibit a "Vehicle May Not Start/Restart Service Now" message in the instrument panel cluster (IPC) with diagnostic trouble code (DTC) U300A:01 stored in the body control module (BCM). This may be due to an obstruction of the ignition key due to a mispositio…