Mercedes VGS4NAG2 TCU Services
At Karman Auto, we offer professional services for your Mercedes VGS4NAG2 TCU. Whether your original module is missing, unreadable, or you want to use a donor TCU, we provide multiple options to get your transmission fully functional and synchronized with your vehicle.
1️⃣ FBS4 Donor TCU Programming from Ignition Switch (EIS)
If your original TCU is missing or corrupted, we can program a donor TCU using the FBS4 security data read directly from your vehicle’s ignition switch (EIS). This ensures your donor module is fully synchronized with your VIN and security data, without relying on dealer-level virginizing or cloning.
- Direct FBS4 security data read from your EIS
- Program donor TCU with vehicle VIN
- No cutting or modifications required
- Plug-and-play ready for installation
Learn more or order: Mercedes FBS4 Donor TCU Programming Service
2️⃣ TCU Donor Virginize & Renew Service
If you do not have the original TCU or cannot read the original data, we offer a donor TCU virginizing service. Our specialists reset the TCU to factory default settings using dealer-level programming tools. Once virginized, the module can be programmed with your vehicle VIN by your dealer or service shop.
- Reset donor TCU to factory defaults
- Works when original TCU data is missing or corrupted
- Professional, no-cut plug-in solution
Learn more or order: TCU Donor Virginize & Renew Service
3️⃣ 1:1 Clone TCU Service
If you have the original TCU and want an exact clone for backup or replacement, our 1:1 Clone TCU service copies all necessary data to a donor module for seamless plug-and-play installation.
- Exact cloning of original TCU data
- Donor module ready for immediate installation
- Ideal for vehicles with working TCU that need replacement
Learn more or order: 1:1 Clone TCU Service
Compare Your Options
| Service | When to Use | What You Get | Link |
|---|---|---|---|
| FBS4 Donor TCU Programming | Original TCU missing/corrupted, use donor TCU | Donor TCU programmed with FBS4 data & VIN, plug-and-play | Order |
| TCU Donor Virginize & Renew | Original TCU not available, donor needs reset | Donor TCU reset to factory default, ready for dealer VIN programming | Order |
| 1:1 Clone TCU Service | You have original TCU, need exact clone | Donor TCU cloned 1:1, ready for plug-and-play installation | Order |
Why Choose Karman Auto?
- Over 25 years of experience with Mercedes TCU, EIS, and transmission modules
- Nationwide mail-in service
- Plug-and-play, no-cut solutions
- Expert programming using professional-grade tools
Have questions? Contact us or browse all services.