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-Class vehicles 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.