🚗 Classic Fault — Mercedes-Benz W126 (1979–1991)
W126 W107 SL brake hard line corrosion
💰 Estimated Repair Cost
$100 – $400 GBP
Parts and labour estimate
🔧 Tools Required
Pipe cutter, flaring tool, pipe bending tool
📋 Overview
Steel brake hard lines on W126 and W107 cars corrode from outside in. Line failure is sudden and causes complete brake loss.
🩺 Symptoms
- Brake fluid loss
- spongy or non-existent brake pedal
- visible rust on brake lines
- wet brake pipe
🔍 Possible Causes
- External corrosion of steel brake lines
- road salt damage
- age-related failure
🛠️ Diagnosis Steps
Inspect all brake hard lines carefully — look for surface corrosion, bubbling or wet sections. Replace all suspect lines.
✅ Most Confirmed Fix
Full brake hard line replacement in copper-nickel
88% of users confirm this fix worked (26 reports)
🔗 Other Mercedes-Benz W126 Faults
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