Mercedes New SBC Warranty Extension 25 Years, Unlimited Mileage

Andrew Technician Commack, New York Posted   Latest   Edited  
Discussion
Braking
Industry
2005 Mercedes-Benz E320 3.2L (112.949) 5-spd (722.6)
Sbc
Sensotronic Brake Control
Extended Warranty

Yesterday Mercedes made a pretty dramatic announcement regarding their SBC brake system. They're extending the warranty coverage under a special service campaign to 25 years / Unlimited Mileage. Sensotronic brake control is like a partial Brake by Wire braking system with some mechanical/hydraulic redundancy in case of failure.

The new coverage applies to 211 E-Class …, 2006 CLS, … SL, … Maybach and … SLR. At a glance, the new warranty covers the SBC control unit, the hydraulic unit, the wheel speed sensors, the "SBC actuation unit" (Brake Operating Unit?), yaw rate sensor, pressure reservoir, and brake light switch.

There was an earlier warranty extension to 4 years 50,000 miles in about 2006. If the system has been repaired previously, customers can submit documentation to the dealer to apply for some reimbursement.

There isn't a reason given for the sudden move, there doesn't seem to be any news about it, NHTSA inquiries, law suits, or anything. So for now we can only speculate.

The early units were built with an internal timer that kept track of the operating time. There was a set limit on the service life of the unit after which it was intended to be removed and replaced. They still fail that way to this day.

What ended up happening is that people in the aftermarket started trying to reflash the units and erase the timer, sometimes used units were installed in other cars, Mercedes revised the design and updated it, leading to a lot of headaches.

I'm not aware of any time where an accident was attributed to an SBC system failure, but what does this mean for the future advanced driver assistance / safety systems?

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Aaron Owner/Technician
Gardiner, Maine
Aaron Default
 

Thanks Andrew, Do you have a bulletin number? I couldn't find anything on StarTek

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Steve Technical Support Specialist
Gainesville, Florida
Steve Default
 

Me neither. I also checked with the NHTSA, no good. I heard this info from another source and have inquired there too about the document. The document is everything.

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Andrew Technician
Commack, New York
Andrew Default
 

Look at what's new for past week on stkinfo. I don't think they put a number on it.

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Aaron Owner/Technician
Gardiner, Maine
Aaron Default
 

Thanks, I found it that way. It's also listed under "Warranty Information"

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Steve Technical Support Specialist
Gainesville, Florida
Steve Default
 

Hi Aaron, I spent some time looking in StartekInfo with no luck, so with your image I looked again. I just could not find the warranty link in my startek contents. Then I decided that maybe you were using a dealer hookup and there it was. So for anyone looking, don't bother unless you have the dealer hook up.

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James Owner/Technician
Pike, Pennsylvania
James Default
 

Good to know. I've had customers turned down when I sent them back for warranty coverage because the the earlier extension had expired. Appreciate the info

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