For some reason my headlight main beam isn't working. If I pull the stalk back it it flashes but if I push it forward the main beam doesn't engage and the blue main beam indicator doesn't light. All the fuses are fine. Could it be a relay, and if so which one of the four? Anyone got any ideas?
There are five relays on an M3W with cooling fan. Two are for headlamps, dip/main and main beam - each have a blue/slate wire for identification, check by substitution with similar diode relay (worth having a spare). Check also stalk switch and TSM/headlamp unit connectors. If no luck with suggestions would suspect the latter.
