ronnieE500

So, is it safe to say if the SBC makes it 10 years it's good to go for another 10? I prefer to leave "well enough alone" but if the software upgrade won't cause any trouble, I should go for it?

SorryAboutThat

No, you should absolutely NOT assume that you're good to go for another 10 years just because you made it through the first 10 trouble free. The SBC can fail at anytime without warning. It's very likely you will have either SBC or accumulator/pressure reservoir failure at some point. These are very common problems with the 2003-2006 W211's with SBC braking system.
The software "upgrade" refered to in the previous posts in this thread is not really an upgrade. It's just resetting the counter that keeps track of brake pedal and/or SBC pump actuations. The original limit was 300,000 actuations. When that limit is reached, the red "service brake/visit workshop" message would appear and the braking system would go into emergency mode. Anyway, leaving well enough alone is probably your best bet...along with flushing the brake fluid every two years as recommended by MBZ.

hangit06

Benz-O-Rama

Add me to the list of failed SBC, on my 211. Had the white BRAKE instrument cluster warning for about week. Thought it was pads, didn't give it much thought. Ordered pads and was gonna change at next chance. Then on Saturday, I got 4 miles from my house and BOOM, RED warning, no brakes. Or, very little braking, I should say. I live in a very hilly area and getting her home was hairy, to say the least. Did the E-Brake shuffle up and down some steep mountain roads. Pucker factor was strong...

Hooked up my SDS and sure enough, C249F OPERATING TIME OF COMPONENT A7/3 IS EXCEEDED (SBC HYDRAULIC UNIT) was the code.

Cleared the codes, let it sit overnight and started her up to move her out of the way into another part of the driveway. Car stops fine, but is back to white BRAKE error on the IC. Parked it, haven't started it since. SBC warranty was up in April, so no joy from the dealer when I went in to talk to them today. Ordered new SBC unit and will install next week.


It get's better. Had them run the VIN on my SL600 just to see when that SBC warranty was up. Wait for it..... last Friday.




Happy Happy Joy Joy.

despicable merc

Holy Crap! . How much for the SBC pump?

Benz-O-Rama

Depending on you know and who you blow, $800- 1000(ish) plus install.


Here's what it looks like in SDS

vettdvr

My new Chrysler 300 C 5.7 V8 will never have an SBC failure

Benz-O-Rama

LOL. You had some bad luck for sure...


My car has been the polar opposite of yours. First real major failure on the car since I've owned it. Bought it with 29K on the clock forever ago....


My Caddy CTS Wagon will never have SBC failure. Nor, ABC, nor EIEIEO!

ASHBURY04

Please keep us posted, did you install the pump yet? how much did the pump cost?

noodleman2u

2004 e320 4matic, 129k. Experienced SBC issue w/o prior warning; back up brake system is totally inadequate!!
Bought a SBC pump from mymercedesparts.com (not available new, only factor refurb.) for $833.75 USD, plus core charge ($153) and shipping to NYC which is less that the $1490 (plus shipping) price for a new one. Havent installed the part yet; waiting for my bootleg STAR system to arrive ($400).

will update the post. Thanks for the prior post and info

Plutoe

This is going to be something to watch!!!

kenchen

Just curious. I had my SBC replaced in 2005 during the recall. Is this new unit covered under warranty for another 10 years?

vettdvr

Not unless you got a written document at the time of install.

Cars without SBC don't have a problem.

kenchen

I actually do have documentation of the SBC replacement from the dealer. It was done 9 years ago. My car is over 10 years old but the SBC unit is just 9 years old. Is the SBC unit still covered under the 10 year extended warranty?

Ken

konigstiger

No, SBC hydraulic unit warranty term is 10 years from vehicle's initial factory warranty start date.

noodleman2u

Was able to change the SBC w/o Xentry DAS. Prior to removing the SBC, I disconnected both batteries. This is the guide I downloaded.

https://www.bosch-repair-service.com...eisung_EHB.pdf

After installing the SBC, I bled the brakes using a Motive pressure bleeder (used 2 liters of brake fluid). The dash lights/alerts did not turn off right away but drove the vehicle for 2 minutes and then parked; when I restarted the vehicle, the dash lights (red alert) were off and the vehicle returned to normal ( the tranny unlocked and the brakes worked as normal).

BTW I purchased an aftermarket Xentry DAS and after abit of tweaking (reinstalling the startkey codes), the system worked great.

Thanks for the info from previous posts; steered my efforts in the right direction :-)
Happy to be back on the road :-)

ot1

2002 Seville STS, EBCM (electronic brake control module) failed, looks similar to the inside of an SBC!

woland8816

http://www.ebay.com/itm/281386257571?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
It appears to reset the SBC.

Very curious...

al00sh

I had the same problem recently my mechanic said it was some reservoir that is part of the SBC unit, $700 fix never happened again, you might wanna check that before selling