Brake Master Cylinder

quiller303 said:

Guys,

I am experiencing the red brake warning light on the dash. It has been intermittent for a while but now is on full time. I have read in some of the threads that this is a common issue and some have had success with replacing the master cylinder w/switch. I would like to go this route but I am unsure of the exact Mopar part #. Several different part #'s have been listed here on the forum. My truck is a 2006 Quad Cab w/ 20" wheels ( I include this because I have seen this is part listings for the master cylinder). Can someone point me in the right direction. Much appreciated!

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CaptnCrash said:

That red brake warning light can also happen if the abs sensor on the rear end [ right on top of the ring gear ] is broken off or failed, and also if one or both of the abs sensors on the front wheels has failed. Best bet is to get a diagnostic reader that can do ABS and check it all out.

If truck has a bunch of miles remove and inspect the front ABS sensors. Probably just replace them if they are all clogged up / coated with crap. If you replace one front sensor replace them both.

Then drive truck and see what happens.

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