Mercedes 7G-Tronic 722.9 TCM – Turbine Speed Sensor Repair C300 Dim or discoloured light output

Dim or discoloured light output

What This Means:

and EVAP system leaks

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Complete failure of indicator

Mercedes 7G-Tronic 722.9 TCM – Turbine Speed Sensor Repair C300 Dim or discoloured light outputMercedes 7G Tronic 722. 9 TCM Turbine Speed Sensor RepairThis is a repair service for the 722. 9 7G Tronic Transmission Control Module (TCM) used across a wide range of Mercedes Benz vehicles. A common failure in these units involves the internal turbine speed sensors Y3 8n1 (Turbine Speed Sensor) and Y3 8n2 (Internal Speed Sensor). Faults typically cause: Harsh or erratic shifting Transmission stuck in limp mode DTCs relating to speed sensor errors