Mercedes Download Manager (DLM)
Download, install, and use the official Mercedes-Benz Download Manager to create a USB for COMAND and MBUX navigation map updates. Windows guide, Mac/Linux workaround, full error reference.
What is the Mercedes Download Manager?
The Mercedes Download Manager (DLM) is the desktop app that builds the USB stick for a manual Mercedes navigation update. It pulls map data from Mercedes servers, and loads the appropriate data to perform a Mercedes-Benz map navigation update.
It is the easiest solution since you only install it, select the NTG version you need, the region, and it does the rest.
Download Mercedes Download Manager
DLM is hosted on Mercedes' customer-solutions domain:
Download Mercedes Download Manager (DLM)
When your car prompts for a Map License Key, enter your VIN to generate a Mercedes-Benz map activation code. Works on every supported NTG generation, NTG3.5 through Gen20x.
Tip: Create the USB first with DLM, then generate the code so you choose the correct version and region.
System requirements
DLM is a Windows-only desktop app:
- Operating system. Windows 10 or Windows 11 (64-bit recommended)
- Disk space. 30 GB free minimum. DLM stages files to your system drive before copying to USB.
- USB stick. 64 GB+ for NTG3.5-5.5, NTG6, NTG7 / Gen20x full-region maps
- Internet. Stable. Full map data runs 32 GB to 50 GB depending on region and NTG.
DLM has no native macOS or Linux version. See Using a Mac or Linux computer below.
Prepare the USB using DLM
- Insert a clean USB stick with enough capacity. DLM tells you the exact size once you pick the update.
- Open DLM and select your NTG generation. Check the Which NTG version is in my Mercedes? table if unsure.
- Pick the region. Europe, North America, China, Japan, Korea, Australia / NZ. Region must match what your car expects.
- Pick the map version. Latest one compatible with your NTG firmware. DLM lists your options.
- Choose the USB filesystem. DLM picks for you. Older NTGs use FAT32, newer ones exFAT or NTFS.
- Click Download. 20–60 minutes depending on map size and internet speed.
- Insert the USB in the car and start the navigation update. Wait for the Map License Key prompt. That's when you generate the code on this site.
Troubleshooting DLM errors
Using a Mac or Linux computer
DLM has no Mac or Linux build. Workaround: run Windows in a virtual machine.
On macOS:
- Install UTM. Free, works on Apple Silicon and Intel.
- Create a Windows 11 VM following the UTM Windows guide.
- Install DLM normally inside Windows.
- When you plug in the USB, click the USB icon in UTM to forward it to the VM. DLM sees it like a real Windows PC would.
On Linux:
- VirtualBox or VMware Workstation Player. Install a Windows 10/11 guest, forward the USB.
Compatibility tip. USB forwarding is finicky. If DLM can't see the USB inside the VM, unmount it from the host first, then attach to the VM via the virtualization tool's USB menu.
DLM tips that save time
- Pre-format the USB outside DLM. Right-click, Format, exFAT or FAT32. Avoids Windows permission edge cases.
- Verify your VIN first. Map size varies by region. Wrong region means re-downloading the whole thing.
- Check your data card region. It's stamped there, not derived from your country.
- Keep the laptop on charger through the download and the in-car install. Both can run 30 to 90+ minutes. A flat battery corrupts the install.
After the USB is ready
Once DLM finishes and you have the USB, you're minutes from done:
- Insert the USB in the car.
- Confirm the update version and region on screen.
- When the car asks for the Map License Key, paste the code you generate below.
Ready to activate?
Generate the code below. Instant for most NTGs. NTG7 and Gen20x are manual: 20 minutes to 3 hours during our operating hours.