Quote:
Originally Posted by thstone
Officially, the traction control system needs to be activated to open the valves to flush all of the old fluid...
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Yes, "officially". Then again checking tire pressure in all four wheels probably has allotted at least one hour of book time units.
Both my 997 and Macan have all the ABS, TC, PSM, & PASM electronic nannies and I have yet to ever exercise any when bleeding/flushing brakes. Same w/ my BMW SUV...
Just suck out most old fluid from reservoir (old turkey baster which now stays in garage permanently), refill reservoir w/ new fluid and connect Motive Power Bleeder (dry) and pressurize. Start at wheel furthest from reservoir and work back towards closest. DOUBLE CHECK reservoir level and pressure after each caliper - refilling as necessary.
Misc tips:
- wipe up any drops or spills of brake fluid ASAP - i.e. have rags on hand at each corner and reservoir before starting
- use a clear catch container or at least translucent one
- add graduated markings w/ a permanent marker to catch container if not already present (approx every 4 oz is good). After a few bleeds you'll become comfortable w/ what's coming out, when the line is clear/new fluid and also confident about not running reservoir dry.
- if catch container is not magnetic or doesn't have a hanger/retainer strap, get a bleed tube long enough to reach your container on ground (most any hardware store)
- use a 90 degree nipple on your bleeder tube - less dripping when removed
- when finished bleeding, adjust reservoir to proper level by adding fluid or if overfull by bleeding excess out at closest caliper as opposed to sucking out
Good luck
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