If it's low you can just add in some more to get between the min and max levels. I'd stick with what is already in there; in other words, if it's the standard OEM fill I'd go with that.

If you're replacing it, go with either ATE SuperBlue (or gold), or the BMW OEM stuff. Either will be fine.

 

http://forums.e60.net/index.php?showtopic=...hl=bleed+brakes

 

If you have the proper tools (a pressure bleeder helps) and access to a lift you should be able to perform a brake fluid flush. I do, however, think the modern ABS systems require some massaging of the electronics to ensure the system is completely flushed and replenished with the proper clean brake fluid whilst preventing any air to enter the system.

That said, and I'm a big DIY believer, I've seen area BMW dealers offering brake fluid flush/replacement "specials" for less than $100. When I factor in my time and using proper tools and such, it may be a better "deal" to leave some tasks to the pro's!

 

You don't need a lift: http://forums.e60.net/index.php?showtopic=60186

Also, I can't see where the electronics factor into it regardless of ABS or not. What kind of "massaging" would you do? I can't think of anything electronic that would verify that the system is flushed, or insure that air isn't introduced.

Use different color fluid to tell when everything is flushed, and use proper technique to make sure no air is introduced. Bleeding brakes is really quite simple; it was my first DIY (other than changing oil once) and it couldn't have been easier.

I've seen dealers just suck out the master cylinder and refill and call it a flush and fill. No thanks.

 

> What kind of "massaging" would you do? > There are several methods (depending on the ABS system) to achieve cycling of the system and ensuring the brake fluid flush is complete and that no air is trapped.
> I've seen dealers just suck out the master cylinder and refill and call it a flush and fill. > You've seen the wrong dealers but I'm sure they exist.
> I've done my share of brake fluid flushes etc over the past xx# of years but now decide what DIY stuff I choose to do and what other repair and maintenance tasks I leave to a select group of skilled mechanics who help maintain my cars.

 

Kind of my point: you don't need to be a skilled mechanic, or even a unskilled one to do a brake fluid flush and fill. There is a lot of voodoo myth about these floating around that just isn't true.

I've always been amused at how many people will leave a brake fluid change to a dealer because they think it's complicated, but have no problem plugging a $100 internet-purchased device into their ECU.

 

Just a quick question, how much brake fluid is needed to flsuh the system? Just 1 liter will do?

 

After the flush how do you reset the I-drive?

 

http://forums.e60.net/index.php?showtopic=44579

Check out the 2nd post.

 

That would be more than enough.