Mercedes Vito ISM Repair — No Drive Fault | The Vehicle Check
The Mercedes Vito fitted with the 7G-Tronic automatic gearbox uses an ISM gear selector module that is particularly susceptible to failure in the commercial vehicle operating environment. When the Vito ISM fails the gearbox produces no drive in any gear — a serious fault for any commercial operator relying on the vehicle. The Vehicle Check repairs and clones Mercedes Vito ISM modules at component level via our nationwide mail-in service. We cover the W639 and W447 Vito variants.
Vito ISM Fault — Symptoms and Causes
The Vito ISM experiences the same stress factors as the Sprinter ISM — voltage variation from auxiliary equipment, frequent battery drain events and temperature cycling in the gearbox bay. Internal power transistor failure and connector pin corrosion are the primary failure modes. P0705 and P0706 are the main fault codes stored.
Vito 116 CDI, 119 CDI, 120 CDI and BlueTec variants fitted with 7G-Tronic are all affected. The fault typically presents suddenly and completely — no drive in any position.
ISM Repair and Cloning for Vito
We carry Vito-specific ISM test data for both the W639 and W447 variants. Component-level repair addresses the exact failed transistor or connector. Where cloning is required we transfer the original ISM data to a tested donor unit — no dealer programming after fitting.
Commercial operators — tradespeople, delivery businesses and fleet operators — regularly use our Vito ISM service as a fast alternative to main dealer repair.
Post Your Vito ISM to Us
Post your Vito ISM to The Vehicle Check, Enfield EN3 7PH. We return it repaired or cloned in 2 to 3 working days. Call 0203 489 2610.
Send Your Unit Today
The Vehicle Check | Unit 8 Solway Business Centre | Tysoe Street | Enfield | EN3 7PH
📞 0203 489 2610 | 📧 info@thevehiclecheck.co.uk
Nationwide mail-in postal service. All work covered by our repair warranty.