🚗 Classic Fault — Mercedes-Benz W115 (1968–1976)
Fuse box corrosion causing intermittent electrical faults
💰 Estimated Repair Cost
$15 – $60 USD
Parts and labour estimate
🔧 Tools Required
Contact cleaner, electrical tools
📋 Overview
The original W115 fuse box uses glass tube fuses in clip holders. The clips corrode creating high resistance in circuits. Intermittent electrical faults that cannot be traced often come from here.
🩺 Symptoms
- Intermittent faults across multiple systems
- lights flickering
- components working sometimes
- cannot trace fault
🔍 Possible Causes
- Corroded fuse clips
- oxidised contacts
- wrong amperage fuses by previous owner
🛠️ Diagnosis Steps
Remove each fuse. Inspect clips for corrosion — green or black residue confirms oxidation.
✅ Most Confirmed Fix
Clean all fuse contacts with contact cleaner. Replace corroded holders. Fit correct amperage fuses.
78% of users confirm this fix worked (20 reports)
🏷️ Parts Needed
Fuse box contact cleaner; replacement fuses
🔗 Other Mercedes-Benz W115 Faults
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