I have the brake warning light lit on my 2008.
Just bled the brakes front and rear. Any suggestions on where to start checking?
Thanks.
Jeff
What I believe you have is the switch on the bottom of the proportion valve back by the master cylinder is being activated. That valve is there for if either the front or the rear system failed the valve will cut off fluid to failed system leaving the other system functioning put at a much reduced rate. When you bled the brakes you might have allowed that piston in there to move enough to activate the switch but probably not enough to block one of the systems. I found that a hard application of the brakes a couple of times helped to center the piston.
What I believe you have is the switch on the bottom of the proportion valve back by the master cylinder is being activated. That valve is there for if either the front or the rear system failed the valve will cut off fluid to failed system leaving the other system functioning put at a much reduced rate. When you bled the brakes you might have allowed that piston in there to move enough to activate the switch but probably not enough to block one of the systems. I found that a hard application of the brakes a couple of times helped to center the piston.
I did. All good.Check fluid level. :wave4:
Question, why did you bleed your brakes?
Was this light on prior? No
Did you run the master cylinder low when bleeding? No
Was your brake pedal low and spongy prior to bleeding? Yes
Most metering/ combination valves are NOT serviceable in the field
This means once the pressure difference is detected you will set a light and it will not go out until the failed unit has been replaced and brake system is bleed properly
Is it time for me to think about replacing the proportioning valve?
Your answer to question about brakes being low or spongy was yes?
While you have bled your brakes it is worth doing it 1 more time
It does not take much pressure difference to set a brake light
Have a helper pump the brakes with even slow pumps then crack the bleeders open 1 at a time
See if that resets your light
If not the valve is going to have to be replaced
I have checked the circuit by removing the wire at the brake lever end and that is not the problem. I then unhooked the wire at the valve and the light and buzzer stopped. The culprit is in the valve so I need a part # for a new one.
Jeff