If your Mercedes Vito W447 will not start, shows no ignition response, or the key turns with nothing happening, the issue is commonly a failure within the EIS / FBS4 authorisation system.
We provide a same-day mobile Mercedes W447 EIS repair service, carried out on the road at your vehicle — no part removal, no postal repairs, and no dealer delays.
We cover:
Stafford
Stoke-on-Trent
Uttoxeter
Newcastle-under-Lyme
Stone
Cannock
and surrounding Staffordshire areas
The Mercedes W447 platform (Vito & V-Class) uses the FBS4 immobiliser system, which is known to develop internal EIS authorisation faults.
Common symptoms include:
Key turns but engine will not start
No ignition response
Dashboard does not power up
Steering unlocks but nothing happens
Intermittent starting followed by complete failure
Vehicle immobilised on a driveway, roadside, or work site
These are EIS / FBS4 system faults — not key programming issues.
Unlike postal EIS repair services, we carry out authorisation-level repairs on site.
✔ EIS unit remains with the vehicle
✔ No sending modules away
✔ No waiting days for return shipping
✔ Same-day repair where possible
As a specialist mobile auto locksmith, we attend your location and restore starting authorisation directly at the vehicle.
Our mobile service allows us to:
Diagnose Mercedes W447 EIS / FBS4 faults
Restore ignition authorisation
Re-enable vehicle starting functionality
Confirm correct system operation before leaving
⚠️ Important:
On FBS4 systems, keys cannot be programmed, cloned, or re-synchronised.
This service focuses on repairing the EIS / authorisation fault, not altering keys.
This service applies to:
Mercedes Vito W447
Mercedes V-Class W447
Vehicles fitted with FBS4 security systems
If you’re unsure whether your vehicle is affected, we can confirm this quickly when you contact us.
We attend your vehicle wherever it is — roadside, depot, workplace, or home.
Most W447 EIS faults can be resolved the same day, avoiding dealer-only downtime.
This is specialist immobiliser and EIS work — not general mechanical repair.
Fast response across Stafford, Stoke-on-Trent, Uttoxeter, and nearby areas.
This service is ideal if:
Your Mercedes Vito W447 has suddenly stopped starting
You rely on the vehicle for work or business
You want a local mobile solution, not a postal repair
You need a same-day fix at the vehicle
Contact us with your vehicle details and location
We attend the same day where possible
Fault is diagnosed and repaired on site
System operation is confirmed
You’re back on the road
If your Mercedes Vito W447 will not start, don’t wait for dealership appointments or postal services.
📞 Call or WhatsApp AutoVault
📍 Mobile Mercedes W447 EIS repair in Stafford, Stoke-on-Trent, Uttoxeter & surrounding areas
Specialist FBS4 EIS repair — carried out on the road, same day.
AutoVault is your trusted auto locksmith, specializing in fast, reliable, and secure vehicle access solutions. Whether you're locked out or need key replacements, we're here 24/7 to keep you moving.