Mercedes Japan to Europe Conversion
Convert a Japanese-market Mercedes head unit to the European variant for EU or UK maps. NTG5s2 and NTG6 equipment, what stays Japanese, and remote help. Send your VIN first.
A Mercedes built for Japan keeps a Japanese head unit variant after import. Switching the menu to English doesn't change it, and European maps can refuse to install until the variant changes. This guide covers that conversion for cars now in Europe or the UK.
Check your head unit
| Head unit | What you need | Remote help |
|---|---|---|
| NTG5s2 (HU5) | ENET cable, Windows laptop with diagnostic software, USB stick, and a battery support charger | We help remotely on your laptop. The USB steps happen at the car. |
| NTG6 (HU6) | ENET cable and a programmer such as VVDI. The head unit comes out of the car. | We check your setup and reads. The programmer work is done on the bench by you or a workshop. |
| NTG5s1, NTG5.5, NTG7, Gen20x | Contact us first | Depends on the unit |
Examples our NTG5s2 tool already handles: Japanese C-Class W205 units with a single-DVD COMAND, and some S-Class W222 units with a DVD changer. Other variants are checked per unit.
Not sure which head unit you have? Car Lookup reads your data card and reports the NTG version and the market the car was built for. The build year alone doesn't tell NTG5s1 from NTG5s2. Or send us the VIN.
What the conversion does
- NTG5s2. The unit moves to the European variant and gets European head unit software. Writing that software takes time, so the car needs stable power for the whole job.
- NTG6. The unit moves to the European variant of the same hardware level. If your unit has no European counterpart, we tell you before you pay.
After that, European maps install the normal way. You need the map data and a map activation code for your VIN and the Europe region.
What stays as it was
- Speed and temperature units. Japanese cars already show km/h and °C.
- The instrument cluster language. It's a separate module. Where the cluster supports it, we code it separately.
- Lighting. Japan drives on the left, like the UK. For mainland Europe, headlight setup is an inspection matter, not part of the head unit job.
Driving in the UK
UK speedometers need mph. That's cluster coding, not the head unit conversion. Tell us the destination is the UK and we'll check the cluster from the VIN.
FAQ
I already changed the language. Why won't European maps install?
Language is a setting. The map region follows the head unit variant, which stays Japanese until it's converted.
Which programmer do I need for NTG6?
A programmer that can reliably read and write the head unit's memory, such as VVDI. Tell us what you have before you start and we'll confirm it's suitable.
Can I pay for one car instead of buying a workshop tool?
Yes. Email the VIN for a one-car job. Workshops that convert often can use the Professional region conversion tools.
Next steps
- Check the head unit with Car Lookup or send us the VIN.
- Email the VIN, the destination country, and your equipment to contact@mbretrofit.it.
- We confirm the route and quote before you buy anything.
Related guides
- Region conversion overview. Every head unit and direction.
- US to Europe. US units and the cluster.
- Map code generator. Activate European maps.
- VCI / OBD cable picker. Which ENET cable fits.
Mercedes Region Conversion
Convert a US, JP, or other imported Mercedes to EU spec. Which head units we convert, the equipment each needs, cluster and lighting items, map region, and remote help. Contact us for a VIN-specific quote.
Mercedes US to Europe Conversion
Convert a US-market Mercedes head unit to the European variant for European maps, and what the cluster, radio, and lights need separately. NTG5s2 and NTG6 equipment and remote help.