Frequently Asked Questions

Everything you need to know about our Mercedes services.

General

Is MBUpdates affiliated with Mercedes-Benz?

No. We are an independent specialist. All trademarks belong to Daimler AG.

Is coding legal?

Yes. We only activate factory-fitted features that are already present in your vehicle's hardware. We do not modify emissions systems or add unauthorized performance tuning.

Will coding void my warranty?

Our methods are non-invasive and reversible. However, warranty decisions are at dealer discretion. We recommend discussing specific concerns with your service advisor.

How do I find my VIN?

Your 17-character Vehicle Identification Number is visible on the lower corner of the windshield (driver's side), on the driver's door jamb sticker, and on your vehicle registration document.

What chassis is my car?

Common Mercedes chassis codes: W205 = C-Class, W213 = E-Class, W222 = S-Class (pre-2020), W223 = S-Class (2021+), W177 = A-Class, W247 = B-Class, W253 = GLC, W167 = GLE, W463 = G-Class. The chassis code is usually the first three characters of your VIN after the WMI.

Services

How does remote coding work?

We connect to your Windows laptop via TeamViewer or AnyDesk. You plug your diagnostic interface (C4/C6) into the car's OBD port. The session typically takes 30–90 minutes depending on how many features are activated. You can watch every step in real time.

What is FBS4 key programming?

FBS4 is the immobilizer system used in Mercedes vehicles from roughly 2015 onwards (W205, W213, W223, and newer). We program genuine Mercedes keys to your vehicle's FBS4 system using factory tools and secure online authorization.

What if I lost all keys?

We offer an All Keys Lost (AKL) solution. Depending on your location, we can come to you or arrange secure towing to a partner workshop. The process requires proof of ownership and valid ID.

How fast are map codes delivered?

NTG3.5–5.5 systems: instant delivery after payment. NTG6, NTG7, and Gen20x systems: same day, usually within a few hours. We generate codes using official Mercedes databases.

Can you code any Mercedes?

We support most Mercedes-Benz models from 2011 onwards with NTG4.5 and newer infotainment systems. Some older models may have limited compatibility. Send us your VIN for a free compatibility check.

Tools

What's the difference between Xentry and DTS Monaco?

Xentry is the official Mercedes-Benz diagnostic and programming software. It handles fault reading, coding, and SCN online functions. DTS Monaco is an advanced engineering tool used for ECU flashing, parameter changes, and deep-level programming that Xentry cannot perform.

Do I need a C6 VCI or is C4 enough?

C4 works for most models up to around 2020. C6 is required for the newest DoIP (Diagnostics over Internet Protocol) models including W223, C206, and X167 with latest firmware. If you plan to work on newer cars, invest in C6.

Is ZenZefi required?

Yes. ZenZefi is required for SECoC coding and FBS4 key programming. It provides the secure online authorization tokens that Mercedes demands for these sensitive operations. Without it, many modern functions are simply impossible.

Do you offer training?

Yes, for workshop customers. We offer remote and on-site training covering Xentry, DTS Monaco, FBS4 key programming, and retrofit best practices. Contact us for a tailored training package.

Shipping & Payment

Do you ship worldwide?

Yes. We ship from UK and EU warehouses via DHL and UPS. Delivery typically takes 3–7 business days to most destinations. Express options are available at checkout.

What payment methods do you accept?

We accept all major credit and debit cards, PayPal, bank transfer, and Klarna (where available). All transactions are processed through secure, PCI-compliant gateways.

Can I get a refund?

Physical goods: 14-day return window for unused items in original packaging. Digital codes and map PINs: no refund once generated, as they are tied to your specific VIN and cannot be resold. Services: if we cannot complete the work due to compatibility issues, you receive a full refund.

Is my payment secure?

Yes. Our shop and checkout are protected by SSL encryption. We never store your full card details on our servers. All payments are processed through verified third-party providers.

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