Choosing the ISM module – A1644460310 and A2C53115423
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.
Programming and cloning
Programming takes two stages: first the positioner (selector) is calibrated, then the ISM module is adapted to the gearbox and the car. Instead of programming we can clone the data from your old module – cloning is included in the price.
Other ISM modules in stock
ISM modules with other numbers – the number on your label decides: A1644460410, A0044460310, A0002701952, A0002703252.
When to suspect the ISM module?
The most common symptoms:
- the gearbox goes into limp mode,
- gearbox fault message,
- the gearbox does not respond when D or R is selected.
Before you order, run a diagnosis – the selector, wiring and the gearbox control unit (VGS) can behave in a similar way.
Compatibility with the car
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: A1644460310 and A2C53115423. In the Mercedes-Benz catalogue, number A1644460310 is superseded by A0002701852 – we stock that module too: A0002701852.
Numbers to compare with your label
| Label | Number (different formats) |
|---|
| Mercedes-Benz number | A1644460310 / 1644460310 / A 164 446 03 10 |
| Siemens VDO number | A2C53115423 |
We list the numbers in several formats – the way they are printed on labels and typed into search engines.
Warranty
The warranty on this module is 6 months. You will find the other gearbox control units in the category Mercedes-Benz Transmission Control Units (TCU). Questions about choosing the number? Contact us.
Frequently asked questions about ISM module A1644460310
| Question |
Answer |
| Which cars does this module fit? |
We have not confirmed models for this number – choose the module by the label numbers. |
| Does the module need programming? |
Yes. First calibration of the positioner, then adaptation of the ISM to the gearbox and the car. You can also order cloning from us – included in the price. |
| How do I know that A1644460310 will fit? |
The label of your module must carry the same codes: A1644460310 and A2C53115423. |
| 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. |
