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Old 06-09-2015, 04:56 PM
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DIY Brake Fluid Change

 
Old 10-31-2010, 12:36 AM
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2004 E55 AMG
DIY Brake Fluid Change

I decided it was about time to flush the system and figured another DIY might be helpful. The entire procedure took about 2.5 liters of fluid.

Here's the main supplies I used...STAR, Motive bleeder, and Pentosin Super Dot 4 which is the MB spec and OE part from what I can find, http://www.crpindustries.com/pentosi...uperDOT4_3.pdf , but much less at NAPA ($13 per liter) than going to the dealer for the same thing in an MB bottle. You'll also need an 8mm wrench for the rear bleeders and a 10mm for the front caliper bleeders.



First I sucked out as much of the old brake as I could from the reservoir using a 60cc syringe I got from the farm store with a silicone hose suck on the end.



Hook up the bleeder.



Pump up the pressure to about 2bar.



Go to the SBC control unit screen and select General Servicing.



Then Replace Brake Fluid...



Again..



Next screen reminds you of the bleed sequence...



At this screen make sure your bleed hose is connected and sitting in your container so when you hit F3 you can go crack the bleeder open while the SBC builds pressure. You'll hear some valves open and close and then a burst of fluid go into the drain container. After that it slows to a steady flow and the STAR screen will basically tell you what to do next.



Here's a sample screen after I finished with the left rear caliper and moved on to the front calipers. Each of the front calipers have two bleeders - one on the outside and one on the inside. Outside one's are bled first.



Almost done...moving on to last bleeder.



There will be a couple other screens after this which are self-explanatory. After those I removed the pressure bleeder and made sure the proper amount of brake fluid was in there and closed the sytem. The last thing I did was run this pressure check where there SBC tests the system to make sure it's holding the correct amount. 90bar was factory spec if I recall and mine was 88bar so I'm good to go.



Install the plastic cover over the reservoir, shut off the ignition, start the car, check for any codes, and you're done.



I'll be flushing the coolant and changing the oil tomorrow.

Last edited by BrianS; 04-08-2015 at 11:30 AM. Reason: Links to pics updated.
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Old 10-31-2010, 12:59 AM
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I'm sorry, I cant see beyond your sig...is there other info posted?

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Old 10-31-2010, 01:07 AM
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Originally Posted by Worth the wait View Post
I'm sorry, I cant see beyond your sig...is there other info posted?

ahahahaha I stared at it for a good 15 mins before realizing I should post something.


great write-up, sucks I don't have access to STAR
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Old 10-31-2010, 09:38 AM
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Great write up!
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Old 10-31-2010, 02:49 PM
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Can this be done without STAR?
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Old 10-31-2010, 09:24 PM
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As always ... great writeup! All I could see were big X for pics and only the sig ! I had to use my VPN to view the blocked pics since I am in China this week .

I need to change my rear pads soon, might as well do rotors and fronts at the same time as well as this! So perfect timing!

To change brake pads, the only additional things I guess I need to do is hit Deactivate SBC, change rotors/pads and reactivate before bleeding right?
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Old 10-31-2010, 11:55 PM
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Originally Posted by Forrest Gump 9 View Post
Can this be done without STAR?
Yes, but the fluid will come out a little slower and it won't be a 100% flush. You shouldn't have any problems.
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Old 10-31-2010, 11:56 PM
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Originally Posted by turbo97se View Post
To change brake pads, the only additional things I guess I need to do is hit Deactivate SBC, change rotors/pads and reactivate before bleeding right?
Right.
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Old 11-01-2010, 12:14 AM
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Thanks for the writeup!
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Old 11-01-2010, 12:15 AM
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how long did the whole process take u?
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Old 11-01-2010, 12:15 AM
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Great writeup, thanks
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Old 11-01-2010, 10:10 AM
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Originally Posted by leonarddi View Post
how long did the whole process take u?
Roughly an hour. It could probably be done in less time but I was being methodical about it.
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Old 12-31-2010, 05:13 PM
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Originally Posted by BrianS View Post
Roughly an hour. It could probably be done in less time but I was being methodical about it.
Cool signature.
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Old 12-31-2010, 06:25 PM
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Awesome write up....even better signature! Well done!
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Old 01-01-2011, 09:48 AM
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What software are you using and where do you get it? What are the implications of changing the brake fluid without using STAR? How do you deactivate SBC to change rotors and pads? Thanks!
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Old 01-01-2011, 10:21 AM
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Due to the fact that the E55 uses Sensotronic Brake Control (SBC) which essentually is a brake by wire system. I think that you have to use Star, as my E63 doesn't have SBC, and you don't need Star to change brake fluid, I changed mine in June of last year. Remember that you need to bleed both sides of the front calipers. Each side of the caliper, has its own bleeder valve, one inside and one outside. The rears just have one bleeder valve.

Last edited by Yuille36; 01-01-2011 at 10:41 AM.
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Old 01-01-2011, 10:32 AM
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Thanks! I should have specified the car is an E500, but it does have SBC
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Old 01-02-2011, 04:38 AM
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Anyone know if the E63 has the same bleed order?

I have everything I need and I fortunately do no have SBC.
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Old 01-02-2011, 07:39 AM
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Originally Posted by Jon2007E63P30 View Post
Anyone know if the E63 has the same bleed order?

I have everything I need and I fortunately do no have SBC.
The bleed order as your sitting in the drivers seat is RR, LR then RF and finally LF in that order. Remember that the E63 front calipers have two bleeder valves, one inside and one outside that will need bleeding. "This is most important do not get brake fluid on your paint, as it will take the finish off in a heart beat"
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Old 01-13-2012, 08:28 PM
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Excellent write up,, which i found through google.

Question, after doing a quick test with STAR i do not see SBC so i guess i dont have SBC. Therefore i have 2 questions.

1. Can my car without SBC (cls 2007) be done without star?
2. Do i really need the high pressure bleeder? My brakes are fine, i beleive i just have some air in the system as the pedal goes down a tad more than it used to (before i had the engine removed and refitted). So im asking can i do it the old fashioned way? pump the brake pedal undo RR....ect Pump again undo RL...ect?
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Old 01-13-2012, 10:20 PM
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Originally Posted by J4GG4 View Post
Excellent write up,, which i found through google.

Question, after doing a quick test with STAR i do not see SBC so i guess i dont have SBC. Therefore i have 2 questions.

1. Can my car without SBC (cls 2007) be done without star?
2. Do i really need the high pressure bleeder? My brakes are fine, i beleive i just have some air in the system as the pedal goes down a tad more than it used to (before i had the engine removed and refitted). So im asking can i do it the old fashioned way? pump the brake pedal undo RR....ect Pump again undo RL...ect?
#1 yes
#2 yes (requires 2 bar) 2 check valves in ABS open at this pressure and you can not recreate this condition using the old school brake bleeding procedure, and the vertical run requires a constant pressure and volume to force the air down.
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Old 02-21-2012, 01:12 AM
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Excellent writeup. What laptop, STAR software and cable are you using? I'd like to purchase the same to do my own brake flush. Did you completely drain the fluid reservoir with the syringe or leave some so as not to introduce more air into the system?
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Old 11-20-2012, 12:22 AM
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Can you bleed the brakes w/o star using a extractor from the bleed valve to suck old fluid with something like this http://www.harborfreight.com/brake-b...it-69328.html?
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Old 11-20-2012, 08:50 AM
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Originally Posted by gazosnic View Post
Can you bleed the brakes w/o star using a extractor from the bleed valve to suck old fluid with something like this http://www.harborfreight.com/brake-b...it-69328.html?
(1) You don't need STAR, but you will not flush 100% without....no biggie if you flush annually or often

(2) I'd recommend a kit that use a compressor to generate pressure (like the motive setup) or vacuum like the snap on kit I use....the hand pump kits are generally garbage and a PITA to use compared to the other options
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Old 11-20-2012, 09:03 AM
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Originally Posted by cij911 View Post
(2) I'd recommend a kit that use a compressor to generate pressure (like the motive setup) or vacuum like the snap on kit I use....the hand pump kits are generally garbage and a PITA to use compared to the other options
+1

I have STAR, a Motive, and a Mac Vacuum (hooks to a compressor). Ended up using the vacuum and it worked great. My experience using STAR for this procedure was different than the OP's. It used a TON of fluid.
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