Mercedes Benz Vito W447 EIS immobiliser ignition repair service

Mercedes Benz Vito W447 EIS immobiliser ignition repair service


This is a repair service for Mercedes Benz Vito W447 FBS4 electronic ignition switch, also known as EIS/EZS unit.

You will need to remove and send us your ignition unit and we will diagnose and repair any fault you may have with it.
We will need you to also send all keys you have for the vehicle with the unit.
No need to replace your EIS at a great cost, we can save you money.

One of the most common faults is that the EIS no longer recognizes the key, this prevents the dash illuminating and the engine starting.

Modules Covered under this repair service:
Meredes Vito W447 2015 + FBS4

SKU: EIS2_fbs4 Category: Tags: , , , , , , , , ,


Please note that prices are from £350 depending on the exact fault we find, price may be more. (You will be informed before hand for you to decide if you wish to proceed or not)

Mercedes VITO W447 FBS4 EIS / EZS Immobiliser Key Module Problems and Repairs

Symptoms we can diagnose and repair are:

  • Turn The Key Nothing Happens no Dash Lights
  • Unable To Start The Vehicle
  • Turn The Key – But Vehicle Won’t Start
  • Intermittent Ignition Key Faults
  • Vehicle not responding to remote

If the EIS unit becomes faulty, the key will turn but no dash lights will illuminate and the engine will not start, also the steering lock will not release. This will stop the engine from starting.

It is very unfortunate but also a very common problem with the w447 vito electronic ignition switch. There are many reasons as to why these units fail. Some of the most common reasons are listed below:

  • Jump Starting Whilst Key Is Inserted
  • Power Surge
  • Low Battery Voltage
  • Damage to key
  • Damage to eis

All of the above can cause memory loss or corruption of the EIS module and it cannot be repaired or re-flashed using the usual Mercedes diagnostic systems.

At this point most mechanics will advise you to purchase a new ignition unit direct from Mercedes which can work out extremely expensive and will need programming and coding before it will work

***Please note all EIS repairs take Between 5 – 7 days***

***Please also note this repair service is for the Mercedes Vito w447 FBS4 ignition only, please purchase this only if your ignition is the same as the photo***

We have a standard check up fee of £70 +vat if we find nothing wrong with your unit or key after testing