// Datasheet
| REF | UNIT-ISM-01 |
|---|---|
| FAMILY | ISM/DSM |
| FITMENT | C-Class W205 · E-Class W213 / Coupé C238 · A-Class W177 · S-Class W222 · GLC W253 · Vito / V-Class W447 · Sprinter W907 / W910 |
| SERVICE | TCM / Gearbox Modules — Request a quote |
| BENCH | Basingstoke workshop · UK postal · mobile London & South East |
Part numbers
- A0002703252
- A0002703352
- A0002704452
- DSM222
Other ISM/DSM revisions are covered — if your number is not listed, get in touch.
Common faults
- Gear selector stuck in Park
- Blank or incorrect gear display
- Intermittent shifting — often worse cold or after sitting overnight
- "Visit Workshop" message with transmission codes
- Water damage around the selector on W447 Vito and Sprinter
Repairable?
// Bench verdict
Yes — component-level repair where the unit allows (motors, PCB faults); otherwise a full FBS4 data transfer onto a tested donor, returned plug-and-play with no further coding. Postal service £250, mobile from £350 — against £600–£1,000+ for the part alone from Mercedes.