Choosing the ISM module – A1644460410 and A2C53124662
A used, original ISM module (Siemens VDO) working with the 7G-Tronic 722.9 gearbox. This is the VIRGIN version – clean and reset, ready for programming. The bench test is done before every dispatch.
Similar ISM modules
We also have: A0044460310, A1644460310, A0002701952, A0002703252. Pick the one whose number matches your module.
Numbers to compare with your label
| Label | Number (different formats) |
|---|
| Mercedes-Benz number | A1644460410 / 1644460410 / A 164 446 04 10 |
| Siemens VDO number | A2C53124662 |
Application and selection
The number starts with 164 – in Mercedes-Benz numbering this is the ML W164 / GL X164 series the module was developed for. What matters are the codes on the label of your module: A1644460410 and A2C53124662. In the Mercedes-Benz catalogue, number A1644460410 is superseded by A0002701852 – we stock that module too: A0002701852.
Programming or cloning
The module is programmed in two steps: positioner calibration, then adaptation to the gearbox and the car. If you prefer, we will clone the data from your old module; cloning is part of the price.
Typical symptoms
A faulty module can cause these symptoms:
- gearbox fault message,
- the gearbox does not respond when D or R is selected,
- the car cannot be shifted out of P,
- the gearbox goes into limp mode.
Similar symptoms can come from the selector, wiring or the gearbox control unit (VGS), so a diagnosis before buying is worthwhile.
Contact and warranty
Not sure whether the number matches? Contact us. The module comes with a warranty – 6 months. Other modules: Mercedes-Benz Transmission Control Units (TCU).
Questions and answers: A1644460410
| Question |
Answer |
| How do I put module A1644460410 into service? |
Calibrate the positioner, then adapt the ISM module to the gearbox and the car. Instead, we can clone the data from the old module – included in the price. |
| What does an ISM module do? |
The ISM (Intelligent Servo Module) sits on the 7G-Tronic 722.9 gearbox and electrically shifts it into P, R, N and D when commanded by the selector. It is a different module from the VGS gearbox control unit. |
| Which cars does this module fit? |
We have not confirmed models for this number – choose the module by the label numbers. |
| How do I check whether the module fits my car? |
Compare the codes on the label of your module: A1644460410 and A2C53124662. |
