# NTG4.5 Map Code
Canonical URL: https://mbretrofit.it/guides/map-code/ntg/ntg4-5
Description: Map Codes for W204, 212, 207, 246, 176, 117, 172, 231, 246, 166, 156, 463 Pre-facelift (2011-2017)


This Head Unit is the longest-running NTG generation. It is also referred to as NTG4.7 on some cars.

Use this page if your NTG4.5 / NTG4.7 car asks for a **Map License Key**, **Navi PIN**, **Activation Code**, or **PIN code** during a USB or DVD-style map update. Common models include W204 C-Class, W212 E-Class, W207 E-Class Coupe, W176 A-Class, W117 CLA, R231 SL, W166 ML / GLE, and W463 G-Class.

Image reference: Double-check your head unit matches the photo below.

## How to identify NTG4.5

One of the easiest ways to identify whether your car is NTG4.5 is to use our [Car Lookup](/guides/car-lookup) feature.

### Car Lookup

An interactive vehicle lookup is available on the canonical guide page.

### Video Tutorial

A generation-specific video walkthrough is available on the canonical page.

## Purchase a Map Code

Follow our guide [here](/guides/map-code), or use the form below once you've created your USB.

Enter your VIN in the map-code flow to confirm the compatible navigation system, region, and version.

## Region Compatibility

**Important Notice for Korea, Southeast Asia, and Japan Vehicles**

If your car has a region of **Korea, Southeast Asia, or Japan** (including imports from these Asian countries), and you want to migrate to a navigation from a different region (such as Africa/Middle East or Europe), **you cannot use our service** - the update will not work.

**Before purchasing a map code, you must:**

* Change your head unit's region first by finding a service online, or
* Replace the head unit entirely

**Refunds will not be granted** for region incompatibility issues if you proceed without addressing the region change first. We provide clear warnings in our code generation dialog and guide pages about this limitation.

## Common Problems

Here are some common problems you might encounter when purchasing a map code for your NTG4.5 car.

### USB Stick is not valid, even though it is correct

> If the car refers to the software update as being through a DVD, just follow the instructions but with the respective USBs required.

This is likely a region error. If you are unsure of your car region, please use our [Car Lookup](/guides/car-lookup) feature to verify your car region.

With NTG4.5, you can change the "DVD Region" to:

* 1 for USA
* 2 for Europe
* 3 for Asia

Here are some tutorials to access the engineering menu:

[https://youtube.com/shorts/UYK9Qpgklj8](https://youtube.com/shorts/UYK9Qpgklj8)

[https://youtu.be/z8EYbsB7Kd0](https://youtu.be/z8EYbsB7Kd0)

### USB formatting (FAT32)

* Requirement: USB must be formatted as FAT32 for NTG 4.5 units to accept the update.
* If Windows will not let you format large USB drives as FAT32, use the GUIFormat utility.
  * Download GUIFormat: [http://ridgecrop.co.uk/guiformat.exe](http://ridgecrop.co.uk/guiformat.exe)
  * Open the tool, select your USB drive, set Allocation Unit Size to 32768 (32K), leave Volume Label optional, and click Start.

Below is an example configuration for GUIFormat:

![FAT32 GUIFormat settings](/fat32format.png)

## Map Coverage (Countries)

The complete country coverage is available on the canonical page.