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Re: Renault master brake warning light
Really clutching at straws here.
Follow the wiring leading away from the brake pedal switch under the dash.
If it leads to a multiplug close by, try disconnecting the plug and see if light goes off.
Some Renaults have the wiring to the fluid reservoir running through that plug. It may run past the brake pedal and through the bulkhead.
Check for any damage chaffing on that cable, both inside and under the bonnet.
Just a possible.
Currently in lancs dave's garage:
Scenic 1.4ish 2002. Clio 1.2 2002. Thunderbird 885 1995, Suzuki Gsx600f 1989. Fazer 600 2002. Specialist cement mixer for proffessionals only, not yer average forum numpty. Your car is probably worth more than all that lot put together.