...lights don't always work.? Its only one bulb that dosnt work when i apply the brake. I get the warning indicator on my dash when it doesnt go off. I checked the fuses, theyre fine. Could it be the relay? if so which one?
Clean the bulb sockets with contact cleaner and a suitable brush. Volvo's brake light setup and the associated bulb warning feature are troublesome and I've found that cleaning the sockets and bulb bases usually works