Mercedes W220 S-Class SBC Brake System Fault
The Sensotronic Brake Control system on W220 is an electronic brake-by-wire system that can fail catastrophically. Mercedes issued a recall/goodwill extension. A failed SBC unit results in significantly increased pedal effort or total loss of power assistance. SBC replacement costs £600-1,500. Check if recall has been applied before purchase.
Repair / Solution
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⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz S-Class 2000 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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