John, Tony,
You do not realise how close you are to the possible problem.
Earlier today whilst battling the bus full of school kids through traffic my mind started pondering and came up with the idea that maybe the non-OEM led had broken and shorting the supply to earth. The ECU theoretically should limit the current flow through it's short circuit protection system by dropping the supply voltage to the faulty bulb to virtually zero volts. This would match my symptoms so Sturday's first plan is to strip the inner left light unit and check the LED bulb. If it has gone short circuit then I guess the OEM filament bulbs are gonna have to be refitted.
Shame really 'cos the light output of the LEDs is much better than the OEMs.
__________________
Ray at Wigan Pier
2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore..
In progress, Nothing left to do.
Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter)
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