This article will dissect the B109C15 fault, explain why generic repairs fail, and outline the protocols for fixing it right the first time.
Moisture entry into the light housing or connector terminals, especially common in older models like the Discovery 4 or Range Rover Sport. Blown Fuse/Module Glitch:
(interior lighting). In Land Rover's diagnostic language, the "B" prefix indicates a body system fault, and the "-15" suffix often denotes a short circuit to battery or open circuit service-landrover.ru