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Mercedes W221 S-Class 7G-Tronic Conductor Plate Failure — Mercedes-Benz S-Class 2005 | MyCarFault
⚪ UNSOLVED No confirmed fix yet · Be the first to help

Mercedes W221 S-Class 7G-Tronic Conductor Plate Failure

Mercedes-Benz S-Class 2005 7G-Tronic 722.9
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 7G-Tronic conductor plate on W221 S-Class develops electrical resistance faults with age and heat cycling. Symptoms include erratic gear selection, sudden limp mode in third gear, delayed engagement from rest and gearbox warning lights. Fault codes P0730-P0738. Conductor plate replacement costs £350-700 at an independent Mercedes 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 S-Class 2005 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.

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