The electrical brain of your electric Mercedes-Benz relies on key modules like the ECU (Engine Control Unit), SAM (Signal Acquisition Module), and fuse boxes to operate seamlessly. AT Technicians offers specialised testing and replacement services for these vital components. Using dealer-level diagnostics, we access ECU performance data, check firmware status, and scan for internal faults. For SAM modules essential in electric models we test signal transmission across lighting, wipers, locks, and EV support systems. Fuse box inspections help locate blown or corroded circuits often caused by overcurrent or moisture ingress. If any component shows failure, we replace it using genuine or approved parts and code the unit to the vehicle. Our programming ensures seamless integration into your Mercedes-Benz electrical network. We also validate communication between modules and recheck power flow. Choose AT Technicians for safe, effective ECU, SAM, and fuse box servicing tailored to your electric vehicle.