Mercedes W212 E-Class ISM Repair — 7G-Tronic No Drive | The Vehicle Check
The Mercedes W212 E-Class fitted with the 7G-Tronic automatic gearbox uses an ISM module that is susceptible to the same failure modes as the W204 unit. When the W212 ISM fails, the gearbox has no drive — the selector lever moves but all gear positions produce no movement. P0705 and P0706 are the primary fault codes stored. The Vehicle Check repairs and clones Mercedes W212 E-Class ISM modules at component level via our nationwide mail-in service.
W212 ISM Fault Diagnosis
The W212 ISM is mounted on the 7G-Tronic gearbox body and is exposed to significant heat and vibration. Internal solder joint fatigue and power transistor failure are the primary causes of no-drive faults on W212 vehicles. The fault can appear gradually — intermittent no-drive that clears on restart — before becoming permanent.
W212 models most commonly affected include the E200, E220, E250, E300 and E350 with 7G-Tronic gearbox, produced from 2009 to 2016.
ISM Repair and Cloning
We carry W212-specific ISM test procedures and repair data. Component-level repair restores the original ISM to full function — the repaired module fits back without any programming. Where cloning is required we transfer the original module data to a tested donor W212 ISM.
All repaired and cloned ISM units are bench tested before return with a full repair report.
Post Your W212 ISM to Us
Post your W212 ISM to The Vehicle Check, Enfield, EN3 7NJ. We return it repaired or cloned. Call 0203 489 2610.
Send Your Unit Today
The Vehicle Check | Unit 8 25 Mollison Avenue | Mollison Avenue | Enfield | EN3 7NJ
📞 0203 489 2610 | 📧 info@thevehiclecheck.co.uk
Nationwide mail-in postal service. All work covered by our repair warranty.