Vehicle Connection Interfaces (VCI)
Pick the right OBD cable for your Mercedes coding job. We match your VIN to the cable your chassis actually needs - Openport for CAN, ENET + AT adapter for DoIP.
What's a VCI?
A Vehicle Connection Interface is the hardware bridge between your laptop and the car's OBD-II port. Every coding job needs one - but which one depends on how your Mercedes talks to its modules.
- Older Mercedes (NTG3.5 → NTG6 / MBUX Gen 1) speak CAN. A cheap J2534 pass-thru like the Tactrix Openport 2.0 is enough.
- Newer Mercedes (NTG7 / Gen20x, i.e. MBUX Gen 2, Zero-Layer UI) speak DoIP over Ethernet. CAN-only cables can't see the modules at all - you need an ENET yellow cable (MB pinout).
Recommend for my car
Compatibility matrix
Quick lookup if you already know your NTG generation:
| NTG | Era | Bus | Required cables |
|---|---|---|---|
| NTG3.5 | 2009–2013 | CAN | Tactrix Openport 2.0 |
| NTG4.5 | 2011–2016 | CAN | Tactrix Openport 2.0 |
| NTG5 / NTG5*1 | 2014–2018 | CAN | Tactrix Openport 2.0 |
| NTG5*2 | 2016–2020 | CAN | Tactrix Openport 2.0 |
| NTG5.5 | 2018–2021 | CAN | Tactrix Openport 2.0 |
| NTG6 (MBUX Gen 1) | 2018+ | CAN | Tactrix Openport 2.0 |
| NTG7 (MBUX Gen 2) | 2021+ | DoIP | ENET Cable (Yellow) |
| Gen20x (Zero Layer) | 2024+ | DoIP | ENET Cable (Yellow) |
Cable catalog
Tactrix Openport 2.0
CAN onlyBudget pick for pre-MBUX coding
Reliable J2534 pass-thru for legacy CAN-bus Mercedes. Great for coding, not recommended for flashing.
ENET Cable (Yellow)
DoIP / EthernetDoIP tunnel into MBUX Gen 2
Standard yellow Ethernet-over-OBD cable. Required for DoIP (NTG7, Gen20x) coding sessions.
Where to buy
We don't sell hardware directly. Trusted sources:
- Tactrix Openport 2.0 - official Tactrix store, Amazon, eBay.
- ENET yellow cable - search AliExpress for "BMW ENET cable". Despite the name, it works on all Mercedes DoIP cars. These run €10–20 and are the same hardware sold under MB branding at 5× the price.
Coming soon: direct affiliate links and a vendor comparison table.
Still unsure?
Email your VIN to contact@mbretrofit.it and we'll confirm the exact kit before you spend anything.
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