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Mercedes-Benz 722.9 Intelligent Servo Module (ISM)
Restore electronic gear selection functionality in your Mercedes-Benz 722.9 7G-Tronic transmission with this Intelligent Servo Module (ISM). This replacement unit controls the transmission selector mechanism, enabling Park, Reverse, Neutral and Drive selection.
Compatible OE reference numbers include A0002701752 and A0002701852. Vehicle-specific verification is essential before ordering. SCN coding or initialization with a Mercedes-Benz-capable diagnostic tool is required after installation.
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Description
Mercedes-Benz 722.9 Intelligent Servo Module (ISM)
The Intelligent Servo Module (ISM) is an electronic transmission component used in selected Mercedes-Benz vehicles equipped with the 722.9 7G-Tronic automatic transmission. It operates the transmission selector mechanism, controlling movement between Park, Reverse, Neutral and Drive.
This replacement module is intended for vehicles experiencing faults related to electronic gear selection, selector positioning or ISM communication.
Key Features
- Replacement Intelligent Servo Module for Mercedes-Benz 722.9 transmissions
- Controls electronic transmission selector movement
- References OE numbers A0002701752 and A0002701852
- External transmission mounting location
- Designed for selected Direct Select-equipped vehicles
Common Symptoms of ISM Failure
- Vehicle unable to shift into Park
- Flashing or missing gear-position indicator
- Transmission malfunction or workshop warning
- Gear selection not matching the requested selector position
- ISM or CAN communication-related fault codes
Vehicle Compatibility
Listed applications include selected Mercedes-Benz vehicles equipped with the 722.9 transmission, including W212 E-Class, W164 M-Class, X164 GL, X166 GLS, W251 R-Class, CLS and S-Class Coupé applications.
Compatibility must be confirmed using the complete part number on the original ISM and the vehicle identification number (VIN). The two OE references listed are not sufficient on their own to guarantee interchangeability across every 722.9 vehicle.
Installation and Programming
The ISM is mounted externally on the transmission housing. Installation involves disconnecting the electrical connection and removing the module from the selector mechanism.
Programming is required. After installation, the replacement module must undergo vehicle-specific SCN coding or initialization using a compatible Mercedes-Benz diagnostic system. The Park position must also be correctly taught before normal operation.
Professional installation and programming are recommended. Check battery voltage and scan for relevant ISM and CAN communication faults before replacing the module.
Product Specifications
| Specification | Details |
|---|---|
| Product Type | Intelligent Servo Module (ISM) |
| Vehicle Make | Mercedes-Benz |
| Transmission | 722.9 7G-Tronic |
| Transmission Type | 7-Speed Automatic |
| Product Brand | Unbranded / Manufacturer Not Disclosed |
| Condition | New Replacement |
| Mounting | External Transmission Housing |
| Function | Electronic Transmission Gear Selection |
| Programming | SCN Coding / Initialization Required |
| Diagnostic Equipment | Mercedes-Benz-Compatible Diagnostic Tool |
| Weight | 3.48 lb (approximately 1.58 kg) |
OE and Cross-Reference Numbers
| Reference Type | Part Number |
|---|---|
| OE Reference | A0002701752 |
| OE Reference | A0002701852 |
Listed Vehicle Applications
| Mercedes-Benz Model Range | Chassis / Platform |
|---|---|
| E-Class | W212 |
| M-Class | W164 |
| GL-Class | X164 |
| GLS-Class | X166 |
| R-Class | W251 |
| CLS-Class | Chassis not specified |
| S-Class Coupé | Chassis not specified |
Fitment notice: These are the model applications identified in the product listing, not a guaranteed fitment list for every production year or engine. Verify the transmission type, original ISM part number and VIN before ordering.
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