Transmission Control Unit (TCU)
* Location: usually installed inside the automatic transmission pan.
*Features:
* Controls automatic gear shifting.
* Controls transmission fluid pressure.
* Diagnoses and stores fault codes.
*Part number:
* A 906 270 05 80
* A 906 270 07 08
* A 906 270 08 08
*Compatibility:
* Mercedes-Benz Sprinter W901 (1996-2006)
* Peculiarities:
* Adapts to individual driving style.
* Includes anti-slip mode that prevents transmission damage.
*Can have different driving modes such as “Comfort”, “Sport” and “Economy”.
* Possible problems:
* Incorrect gear shifting.
* Gear slippage.
* Transmission fluid leaks.
* TCU related fault codes.
* Replacement:
* To replace the automatic transmission control unit, special equipment and software are required.
* After replacing the TCU, it must be programmed for a specific vehicle.