Mercedes C-Class Speedometer Dead — CAN Bus Fault
Mercedes-Benz
C-Class
2007
All W204
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟡 Monitor Closely
Complete speedometer failure on W204 C-Class (with other instrument malfunctions) indicates a CAN bus communication fault rather than sensor failure. Scan all modules for communication errors. SAM module or instrument cluster replacement may be required.
Onarım / Çözüm
No confirmed fixes yet. Share yours below.
⚠️ Yanlış Teşhis mi?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz C-Class 2007 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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