Hi All,

I just finished a brake bleeding job with the Motive Power Bleeder on a 2011 G37 a few days ago. I stumbled a crossed the FSM and see that there is a caution warning of "Turn the ignition switch OFF and disconnect the ABS actuator and electric unit (control unit) connector or the battery negative terminal before performing work." I realized i did not do this step, and am wondering if I have done damage to the ABS unit with the pressure executed by the Motive Bleeder. I am also curious what is the purpose of disconnecting the ABS before bleeding brake?

Any inputs would be appreciated. Thanks.

 

I've done the above 3 or 4 times now. Never touched the battery or disconnected the abs box. Never had any issues. Probably a precaution in case the unit should actuate while you're doing the job.

 

Or Turkey baster method, suction out as much as you can and refill with dot 3 or 4. Do it again a week later then once more another week after.

 

And with the above method you'll still end up with old fluid in the distant part of the lines. Do it right or don't do it at all.

 

Have help and a small box end wrench - bleeding takes 15 minutes, flushing more like 30.

Have no help? Buy speedbleeders and pressure bleeder..

The pressure bleeder just replaces the helper's foot on the pedal. Speedbleeders keep it from sucking air back in while you run around doing all the things.

 

Problem is if you replace a line or caliper or upgrade to akebono you must bleed system.

I do use this method for power steering and clutch resevoir

 

@rotarymike My concern doing it the traditional way is having to fully or almost fully depress the brake pedal. During normal driving the pedal doesn't get depressed to that extent. So what happens to the brake master when it's bottomed out like that.... Premature wear¿? Pressure bleeding eliminates this possibility. No need for a helper either.

@PNW_IPL The clutch is so easy to do with gravity bleeding. Takes maybe 15 min. Finish off with a few bleeds the traditional way.