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E-Class (W211) 2003-2009

reduced brake power

 
Old 05-19-2014, 05:29 PM
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reduced brake power

hi guys!
so here is my story after reading all post i couldn't find answer to my question . my w211 made in 2006 (E220) had a brake fluid leakage on the right front wheel, at the MB company they said i have to change the caliper for that side.
it was 1000$ cost so i was planning to do it later but yesterday there was a message 'low brake fluid' . again i went to MB and they refilled it so the error was gone and they said you have to change the caliper because there will be leakage and the same problem .
today when i went into car there was a message 'reduced braking power , start engine ' i started the engine mean while i realized the brake pedal is not normal and was going down with out any resistance as usual which is hard to push downward , after start the message changed to ' reduced braking power depress brake pedal fully! . i depressed it and there was another message ' ESP defective visit workshop . and the ABS and the red alarm for handbrake are also turned on . i tried to refill the brake fluid bc i saw no fluid in reservoir but it didnt help this time.

all this made me so scared and i felt so bad .plz if somebody know help me what is the problem .
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Old 05-20-2014, 08:58 AM
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Now, by waiting you may have damaged more components-------tow the car back to MB and get the caliper replaced!!

An alternative is to park the car and buy another, donate the car or sell the car as is!!
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Old 05-20-2014, 11:27 AM
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is this all you can tell me? i went to MB today and they asked me 1500$ to replace the caliper plus the brake pedas and brake liquid and they said still the error might stay and if so the SBC has problem and need to replace . i checked the caliper and the only problem i found was the rubber seal ring around the piston in a groove which was not in well fixed to the piston . i attach a photo of it which i took there . so thats the reason oil leaks . and those error should be bc of low pressure in brake due to loss of oil and replacement with air as they said there was only 3 liter oil in my brakes which should be 6 liter . so 3 liter air in my car 3 liter oil .
but the thing is they say you should buy a caliper because mb doesnt sell that simple rubber sealer separate !!! is not this crazy?
please help me in this case with your experiences i really appreciate it
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Old 05-20-2014, 12:28 PM
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I think you need to go to a Voodoo specialist--they will tell you what you want. In this country a water buffalo is a water buffalo---now if you want to call it something else that's fine, but remember a caliper is a caliper!!

MB has said there isn't a caliper repair kit, therefore you have to replace the caliper---now you keep asking for help---what help do you need, do you need financial help, or be very specific as to what help you need, because you need a different caliper???
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Old 05-20-2014, 02:11 PM
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first of all thanks for your reply but dont try to show how cool you are with making joke of my thread plz, you better not reply if you think it does not worth to, i am asking from those who knows something more than me about caliper as im not good in the mechanic and car service .and you talk like you dont know how dirty business can be for car services and what ever they say is written in holy book. at the end i might not be as rich as you but i dont need your financial help.
and my question was clear i wanted to know is this true that there is no rubber sealer in market or services for replacement and for that i need to change the whole caliper which has no problem except a sealer??
and is this true that the w211 has 6 liter brake fluid capacity???
and lastly what make it clear that SBC has problem , is there an error in the car display to say SBC defect or not , im worried about SBC more than caliper now.
i mentioned all this in my post and added a photo to be precise . i searched the net and forum i couldnt find answer thats why i posted here otherwise i did not post here.

Last edited by w211E220; 05-20-2014 at 02:14 PM.
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Old 05-21-2014, 09:23 AM
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IF I remember correctly the caliper is a two piece caliper. This means you have to split the caliper to remove the piston. The problem is not the piston. The problem is getting a good seal back on assembly. My guess is the lawyers won't let them sell the kit because of fear you won't get a good seal on the two parts.

Why not just buy a caliper from one of the on line suppliers people use on this forum known to be reliable and put it on yourself? You will have to bleed the brakes.
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Old 05-21-2014, 12:55 PM
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thanks vettdvr !! i think i have no option instead of that.
do you think if i bleed it after replacing new caliper those error which i mentioned on the clock will disappear or there might be damages to SBC also? there was never such errors in the car and they just appreared when my brake fluid was almost empty due to leakage .
i couldnt realize what are exact indication of having SBC damage in w211
and how much fluid is needed for bleeding in total ? i heard 6L from dealer but also 2.5L in this forum and 4L in the net so im confused . couldnt find it in the user manual
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