A1644460710 – used ISM module
On this page you will find an original Siemens VDO ISM module for the 7G-Tronic 722.9 gearbox. This is the VIRGIN version – clean and reset, ready for programming. The unit passes a bench test before we send it.
Label – numbers and formats
| Label | Number (different formats) |
|---|
| Mercedes-Benz number | A1644460710 / 1644460710 / A 164 446 07 10 |
| Siemens VDO number | A2C53238787 |
Other ISM modules in stock
ISM modules with other numbers – the number on your label decides: A1644460610, A0002703252, A0002701952, A0044460310.
Which cars does A1644460710 fit?
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: A1644460710 and A2C53238787. In the Mercedes-Benz catalogue, number A1644460710 is superseded by A0002701852 – we stock that module too: A0002701852.
After installation
- calibration of the positioner (selector),
- adaptation of the ISM module to the gearbox and the car.
Alternatively we clone the data from your old module – included in the price.
Typical symptoms
A fault may be indicated by:
- the gearbox does not respond when D or R is selected,
- gearbox fault message,
- the gearbox goes into limp mode,
- no communication with the ISM module in diagnostics.
Before you order, run a diagnosis – the selector, wiring and the gearbox control unit (VGS) can behave in a similar way.
Warranty and contact
The module is covered by a warranty: 6 months. More modules: Mercedes-Benz Transmission Control Units (TCU). Question about a number? Contact us.
Questions and answers: A1644460710
| Question |
Answer |
| What is an ISM module? |
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. |
| How do I know that A1644460710 will fit? |
The label of your module must carry the same codes: A1644460710 and A2C53238787. |
| How do I put module A1644460710 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. |
| In which cars is A1644460710 used? |
We have not confirmed models for this number – choose the module by the label numbers. |
