boy Posted August 8, 2009 Share Posted August 8, 2009 hello people one off my mate has just got a 300tdi disco and has got sum probs with the flashers and the brake lights and i've been rope in to fixing it!! the flasher flash fast on the left and the rigth i think its the relay and may be a dodgy connetion!! the brake lights arent working but i have tested the switch and thats ok but no feed going to the lights!!! can anyone help please!!! dave Quote Link to comment Share on other sites More sharing options...
errol209 Posted August 8, 2009 Share Posted August 8, 2009 hello people one off my mate has just got a 300tdi disco and has got sum probs with the flashers and the brake lightsand i've been rope in to fixing it!! the flasher flash fast on the left and the rigth i think its the relay and may be a dodgy connetion!! the brake lights arent working but i have tested the switch and thats ok but no feed going to the lights!!! can anyone help please!!! dave Electronic flasher units normally only flash quickly when one of the bulbs has gone. If they're all working then maybe the flasher unit is stuffed. The brake lights could be the bulbs (swap one for a known good bulb to see) or a a dodgy wire or connection. Get your mate to hold the pedal down and see where you get a feed. The brake light wires are green/purple stripe. Did he ever see the lights working properly? Quote Link to comment Share on other sites More sharing options...
boy Posted August 8, 2009 Author Share Posted August 8, 2009 all the flasher are working so must be the realy!! no never saw the brake lights working the switch is ok already tested that but there is no feed going to the light !!! Quote Link to comment Share on other sites More sharing options...
pinny Posted August 8, 2009 Share Posted August 8, 2009 check the earth connections and clean all the connections an earth fault can cause havoc Quote Link to comment Share on other sites More sharing options...
Penguindonkey Posted August 8, 2009 Share Posted August 8, 2009 A long short but happened to me. If the bulbs have been replaced with LED's then after changing more than 2 the flasher unit played up changing back to filiment bulbs cleaered the problem. However I would suspect poor eathing return Quote Link to comment Share on other sites More sharing options...
BogMonster Posted August 8, 2009 Share Posted August 8, 2009 Has it got indicators in both the main rear light clusters and in the bumper, and are they both working (i.e. 2 left and 2 right indicators on the rear of the vehicle, plus the normal side repeaters and the front indicators)? The most common cause of quick flashy syndrome is that the lights in the bumper pack up because they fill up with mud and water even in road use, and if a bulb is blown then the load on the flasher relay is wrong and it flashes quickly. Sometimes a wiggle and/or some WD40 will sort it out but usually you might as well dump the fittings to start with and put new ones in because that's what you'll end up doing anyway. I may be wrong but I have a vague notion that the brake light switch made an earth for the brakelights rather than supplying 12V to them. You need to check it out on a wiring diagram but assuming that is the case, the fault will be somewhere in the supply side not in the earth side. Quote Link to comment Share on other sites More sharing options...
boy Posted August 9, 2009 Author Share Posted August 9, 2009 all sorted now people there was a brake i the wiring for the brake lights and the flasher has a dodgy earth!! thanks for all the info Quote Link to comment Share on other sites More sharing options...
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