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Mercedes W212 E-Class Heater Matrix Leak Sweet Smell — Mercedes-Benz E-Class 2009 | MyCarFault
⚪ UNSOLVED No confirmed fix yet · Be the first to help

Mercedes W212 E-Class Heater Matrix Leak Sweet Smell

Mercedes-Benz E-Class 2009 All
On This Page: 🔧 All Repairs ⚠️ Avoid These 🔗 Similar Faults
⚡ Quick Summary
Severity Level
High
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟠 Fix Soon

The heater matrix on W212 E-Class leaks coolant into the cabin causing sweet-smelling steam from vents and wet carpets. Partial dashboard removal required for access. Repair costs £600-1,500 at a specialist.

Repair / Solution

No confirmed fixes yet. Share yours below.

⚠️ Wrong Diagnosis?

No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz E-Class 2009 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.

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