Mercedes-Benz WIS (Workshop Information System) and ASRA (Operation Texts, Standard Texts, Flat Rates, and Work Units) are the definitive software applications used by dealership technicians worldwide. They provide exact repair instructions, wiring diagrams, and labor time estimates for every Mercedes-Benz vehicle.
Using an outdated 2020 WIS/ASRA for a 2025 Mercedes-Benz E-Class will result in incorrect torque settings or wrong wiring diagrams, potentially damaging components. mercedes benz wis asra download new link
: Delivers step-by-step repair instructions, component locations, and technical specifications for passenger cars, trucks, and buses. and technical specifications for passenger cars
: Official access is provided through Mercedes-Benz B2B Connect for independent workshops and professionals. mercedes benz wis asra download new link