How do you bleed the ABS Hydraulic unit?
07-29-2002, 03:43 AM
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I completely drained my brake fluid last week in order to make...
changing my lines a bit cleaner. I bled the brakes at all four wheels but last night, my brake and ABS lights came on. I'm thinking I may still have some air in the ABS hydraulic unit. Does that sound right?
07-29-2002, 04:11 AM
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I don't think air will cause a light to come on. you should plug a vag tool to be sure.
You should never have NO brake fluid, even when doing a complete flush, and it's certainly not necessary when changing lines
(oh well, what's done is done right
)
does the pedal still feel mushy after the bleed? I'd have that light checked.
regards,
Liam
(oh well, what's done is done right
)does the pedal still feel mushy after the bleed? I'd have that light checked.
regards,
Liam
07-29-2002, 04:44 AM
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Yeah, whats done is done... very true, but to my suprise...
on my way to work this morning the light was off?!? What is this rough road sensor that disables your ABS I keep hearing about? I ask because I did go over a few large speed bumps before the light came on. Also, what is the proper procedure for a complete brake bleed. RR, LR, Clutch, FR, and FL?
07-29-2002, 05:36 AM
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I wasnt able to do it successfully, but here's how it's supposed to happen...
...activate the ABS/ESP controller, which cycles or purges the isolated fluid contained inside the system. Supposedly you can drain it out of your clutch bleed screw, but I wasnt able to make that happen.
I left it alone and called it a day - my fluid wasnt all that dirty, and I cant imagine that much was isolated inside the ABS/ESP controller.
Maybe I was just a little too chicken with the bleeder screw? I dunno.
I left it alone and called it a day - my fluid wasnt all that dirty, and I cant imagine that much was isolated inside the ABS/ESP controller.
Maybe I was just a little too chicken with the bleeder screw? I dunno.
