Thread: brake lights not staying on..

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My 2c says bleed it!

Originally Posted by Louey

You didn't say what type brakes you have. How ever, no pressure means the place where you have the switch has no pressure until you pump it up. So, is the pedal low at first, and when you pump them, it gets higher ? If so, that means brake adjustment is not correct. If it was air, it would be higher, but, spongy.

My guess is bleed them. You can compress air, you can not compress fluid

If the brake switch is easily accessable you may want to bleed the switch itself. I had one that did that, and after several blead still wouldn't function correctly. I blead the switch, just loosened the switch like a blead screw, and that cured the problem. I guess a small pocket of air was traped there and normal bleading wouldn't get it out. The pedal was good not spungy, but brake like wouldn't stay on. Now I use mechanical switches............ Hope this helps...........