Introduction
WIS (Workshop Information System) and ASRA (Arbeitswerte System) constitute the official factory-level documentation platform used by Mercedes-Benz dealerships globally.
Feature
WIS (Workshop Information System)
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- WIS is the comprehensive digital library for repair and maintenance.
- Repair Manuals: Step-by-step disassembly, assembly, and repair procedures.
- Wiring Diagrams: Full OEM electrical schematics, including Dynamic Wiring Diagrams (DWD) specific to a vehicle’s VIN.
- Maintenance Data: Factory-defined service schedules, fluid specifications, and checklists.
- Technical Specs: Torque values, tightening sequences, and adjustment data.
- Component Locations: Detailed views showing exactly where modules, sensors, and connectors are located.
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ASRA (Arbeitswerte System)
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- ASRA is the official labor time and work unit system.
- Labor Calculations: Standardized times for every service operation or repair.
- Cost Estimation: Used by workshops to create accurate service quotes and invoices.
- Warranty Support: Provides damage coding and labor data for official warranty claims.
- Service Planning: Assists in scheduling by defining the time required for specific tasks.
- Why They Are Essential
- Dealership Accuracy: Ensures every repair is performed to factory standards, preventing damage and ensuring safety.
- Workflow Integration: Directly integrates with XENTRY. When a diagnostic fault code is found, WIS provides the precise technical guide to resolve it.
- VIN-Specific Data: Entering a VIN retrieves information tailored exactly to that vehicle’s configuration (engine, transmission, optional features).
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Compatible Vehicles
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- CARS AND TRUCKS
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Support Interfaces





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