CanyonRS4

I know I need to by the Bentley manual but I don't have it yet... Does anyone know the recommended order for the bleeding sequence?

TIA-Brian

Bob W.

if you have a VAG tool, there is supposedly a feature that allows you to bleed a 'hidden' area of the ABS system...I haven't looked into that personally, so all I know is that it exists. I've bled several Audi vehicles with ABS using the traditional method (RR, LR, RF, LF) without VAG tool assistance, and it works just fine. If you're really **** about it, you need a VAG and a power bleeder.

daveak05

i believe the BM says rear first. although i would be inclined to do fronts first. my logic is you don't want to bleed the rears, close off, then bleed the fronts and have some air possibly moved in the lines between front and rear again. the source of air is the master cyl. i'm probably wrong on this, but there it is.

CanyonRS4

Thanks for the info, now all I need is the motivation to head for the garage...<ul><li><a href="http://www.ross-tech.com/vag-com/cars/absbleeding.html">ABS Bleeding...</a></li></ul>

Bob W.

yeah, so I guess you're ok not doing that as long as you keep the reservoir from sucking air.

Bob W.

wrong...in any car, you always bleed from furthest to closest to the master cylinder.

daveak05

so i've heard. do you happen to know the reason why?

ELEVENS

I think it has to do with the added compressability of air as the length of pipe is increased but in the end it may not matter. Dave Zechhausen is the brake expert and here is what he says:

<b>Must brakes be bled in a specific order?</b>
<i>
Bleeding is done one wheel at a time. The "old timers" will tell you to start with the wheel furthest away from the master cylinder and then work your way closer. Typically, this would mean RR, LR, RF, then LF. However, it doesn't really matter if you start with the front or rear wheels, since they are on separate brake circuits on modern cars with ABS and/or dynamic stability control systems. However, you should start with the passenger side wheel and then do the driver's side.
</i><ul><li><a href="http://www.zeckhausen.com/bleeding_brakes.htm">How to bleed brakes</a></li></ul>

ToblertheDog

While the actual sequence is not critical to the bleed performance it is easy to remember the sequence this way (farthest to the closest). This will also allow the system to be bled in such a way as to minimize the amount of potential cross-contamination between the new and old fluid.

daveak05

i think if pressurized bleed the opposite is recommended(fronts first)