Every listing in this shop is a send-in postal service. Once ordered, we email you packing instructions and our workshop address — most jobs are completed and returned same-day on arrival, fully tracked.
Prefer we come to you or drop the vehicle in? Request a quote — mobile service is available across the West Midlands with a call-out fee based on your postcode.
Send-In Checklist
- EIS / EZS (electronic ignition switch) removed from the vehicle.
- All keys lost: the paired engine ECU from the same vehicle.
- Add key: one existing working key so the new key is written alongside it.
- Original emergency blade key if you want a blade cut.
- A note inside the parcel with your order number, registration, name and phone number.
- Your return address — we send everything back insured and tracked.
Packing instructions and our workshop send-in address are emailed to you the moment your order is placed — always enclose a note with your order number, registration and phone number.
Read the full technical guideCall-out fees are guidance only — confirm your postcode when requesting mobile attendance. Postal send-in has no call-out fee.
Supported Models
- Mercedes W204 C-Class (late FBS4) (2009–2014)
- Mercedes W205 C-Class (2014–2021)
- Mercedes W213 E-Class (2016–2023)
- Mercedes W222 S-Class (2013–2020)
- Mercedes W253 GLC / W156 GLA / W176 A-Class (2013–2021)
Add-Key Programming
Required: Module + one working key
- Bench programming — no dealer visit
- Existing keys stay working
- Fast turnaround on arrival
All Keys Lost Recovery
Required: ECU + Immobiliser module (both sent in)
- Security data extraction
- Immobiliser rebuild
- All new keys paired and tested
Vehicle Compatibility
| Make | Model | Year |
|---|---|---|
| BMW | Mercedes W204 C-Class (late FBS4) | 2009–2014 |
| BMW | Mercedes W205 C-Class | 2014–2021 |
| BMW | Mercedes W213 E-Class | 2016–2023 |
| BMW | Mercedes W222 S-Class | 2013–2020 |
| BMW | Mercedes W253 GLC / W156 GLA / W176 A-Class | 2013–2021 |
Key Features
- Bench-level FBS4 EIS / EZS key programming — add spare or full recovery.
- Keys supplied, paired and tested against your VIN before dispatch.
- Original mileage, VIN and adaptation data preserved.
- Same-day work on arrival where possible, insured tracked return.
Service Overview
- Postal FBS4 Mercedes key programming for W205 C-Class, W213 E-Class, W222 S-Class, W253 GLC and A/GLA. Add key needs the EIS and one working key; all keys lost needs the EIS and the paired engine ECU.
- Postal service as standard: order, post your module, we program and return it tracked. Mobile attendance is available across the West Midlands with a postcode-based call-out fee.
More Information
- Immobiliser
- FBS4 EIS / EZS
- Key Type
- Mercedes infrared / keyless-go key
- Security Level
- FBS4 — encrypted EIS key data
- Tooling
- EIS bench service, ESL emulator support, key bench testing
- Workshop
- Wolverhampton, West Midlands
- Product Code
- MCC-MB-FBS4
Why Choose MCC
- Specialist bench-side equipment
- Wolverhampton & West Midlands workshop
- Fast turnaround — same-day on arrival where possible
- Fixed transparent pricing — no VAT surprises
- UK-wide postal service — insured return delivery
Requirements
- Add Key — EIS/EZS + one working key. £165 for one key, £255 for two.
- All Keys Lost — Requires: EIS/EZS + the paired engine ECU (no working key needed). £200 for one key, £300 for two.
- Optional digital smart key upgrade — £110 per key on this job.
- Vehicle registration so we confirm the immobiliser generation before you post anything.
- Proof of ownership (V5C + photo ID) for all-keys-lost work.
What You Get
- Your EIS/EZS programmed, bench-tested and returned ready to refit.
- New key(s) supplied, coded and battery-fitted.
- Blade cutting to your lock profile where selected.
- Packing instructions and our send-in address emailed the moment you order.
- Insured tracked return delivery.
Frequently Asked Questions
What do I post to you?
For an add key: the EIS plus one working key. For all keys lost: the EIS and the matching engine ECU from the same car — this generation needs both.
Where do I send it?
As soon as you order, we email your packing instructions and the send-in address, with your order number to write on the note inside the parcel.
Is the ESL emulator ready to fit?
This generation does not use an electronic steering lock, so no emulator is needed.
How quickly do I get it back?
Most jobs are done the day they arrive and returned on a tracked next-day service.
Can you come to the car instead?
Yes — choose mobile call-out on this page. We cover Wolverhampton and the West Midlands, with the call-out fee confirmed for your postcode before we set off.
Not sure your car is compatible?
Send your VIN and we'll confirm compatibility before you order. We cover CAS1, CAS2, CAS3, CAS3+, CAS4/CAS4+, FEM/BDC and BDC2.