Brain fart bleeding the brakes

dean911 · 04-13-2013, 05:30 PM

Yep, you guessed it. Didn’t keep the reservoir filled.

I got side tracked before doing the last wheel and thought I had filled up the reservoir. Filling my last cup with a hand vac pump and I hear the gurgling sound. Topped it off and sucked out a second cup of fluid out of the caliper but no good. Now the brakes are like mush. I believe I sucked air into the ABS unit.

Been doing brakes forever but never did this before. Can I fix this at home or is it time for the dealer?

Oops!

Ovaltine · 04-18-2013, 11:55 AM

On an E36 you can manually control the ABS pump by pulling the ASC (or DSC?) relay and shorting the contacts. This would allow you to cycle fluid through and purge the air. I'm not sure if there's an equivalent method for the Z4 or not. If not, the dealer is the safe bet. They'll use their scan tool to cycle the ABS pump.

Kgolf31 · 04-18-2013, 12:07 PM

Could you possibly activate the ABS and cycle it by doing panic stops?

Ovaltine · 04-18-2013, 12:29 PM

Good idea. Panic stops (or even regular stops) in grass for the full ABS effect.

The HACK · 04-18-2013, 01:07 PM

Any independent mechanic with access to a GT1 machine can hook it up and get the ABS pump to manually cycle.

04-13-2013, 05:30 PM	#1
dean911 Enlisted Member 4 Rep 49 Posts Drives: '07 Z4 M Coupe Join Date: Dec 2012 Location: Ohio iTrader: (2)	Brain fart bleeding the brakes Yep, you guessed it. Didn’t keep the reservoir filled. I got side tracked before doing the last wheel and thought I had filled up the reservoir. Filling my last cup with a hand vac pump and I hear the gurgling sound. Topped it off and sucked out a second cup of fluid out of the caliper but no good. Now the brakes are like mush. I believe I sucked air into the ABS unit. Been doing brakes forever but never did this before. Can I fix this at home or is it time for the dealer? Oops!
	Appreciate 0 Tweet Quote

04-18-2013, 11:55 AM	#2
Ovaltine floor sweeper 1 Rep 47 Posts Drives: 2007 Z4 Coupe Join Date: Oct 2011 Location: West Chester, OH iTrader: (0)	On an E36 you can manually control the ABS pump by pulling the ASC (or DSC?) relay and shorting the contacts. This would allow you to cycle fluid through and purge the air. I'm not sure if there's an equivalent method for the Z4 or not. If not, the dealer is the safe bet. They'll use their scan tool to cycle the ABS pump.
	Appreciate 0 Quote

04-18-2013, 12:07 PM	#3
Kgolf31 Brigadier General 459 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	Could you possibly activate the ABS and cycle it by doing panic stops?
	Appreciate 0 Quote

04-18-2013, 12:29 PM	#4
Ovaltine floor sweeper 1 Rep 47 Posts Drives: 2007 Z4 Coupe Join Date: Oct 2011 Location: West Chester, OH iTrader: (0)	Good idea. Panic stops (or even regular stops) in grass for the full ABS effect.
	Appreciate 0 Quote

04-18-2013, 01:07 PM	#5
The HACK Midlife Crises Racing Silent but Deadly Class 1819 Rep 5,337 Posts Drives: 2006 MZ4C, 2021 Tesla Model 3 Join Date: Oct 2007 Location: Welcome to Jamaica have a nice day iTrader: (1)	Any independent mechanic with access to a GT1 machine can hook it up and get the ABS pump to manually cycle. __________________ Sitting on a beat-up office chair in front of a 5 year old computer in a basement floor, sipping on stale coffee watching a bunch of meaningless numbers scrolling aimlessly on a dimly lit 19” monitor.
	Appreciate 0 Quote

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search