Mercedes A & B-Class 722.8 TCM – Turbine Speed Sensor & Bond Wire Repair This is a repair service for the Transmission Control Module (TCM)used in Mercedes A-Class and B-Classvehicles fitted with the 722.8 CVT automatic transmission.
Common failures include:
Turbine speed sensor faults (Y3/9b4)
Internal bond wire failure
No gear engagement or limp mode
Transmission-related fault codes
We address both sensor and bond failure issues, replacing faulty components and restoring full TCM functionality.
Compatible with:
Mercedes A-Class W169 (2004–2012)
Mercedes B-Class W245 (2005–2011)
All repairs are fully tested before return and include a 12-month warranty.
Note: This is a repair service – your TCM must be sent to us for repair.