Stop Paying Dealership Fees — Diagnose Your Mercedes-Benz at Home
The KONNWEI KW331 is a professional-grade OBD2 scanner built specifically for Mercedes-Benz, Maybach, and Smart vehicles. Imagine catching a fault code before it becomes a $500 repair — the KW331 puts that power in your hands. Plug in, scan, and know exactly what your car needs in seconds.
⚙️ Full System Diagnosis
Unlike generic scanners that only read engine codes, the KW331 accesses every electronic system in your Mercedes:
Engine (ECU) — Read, clear, and live-stream fault codes
ABS — Anti-lock brake system diagnostics
Airbag / SRS — Safety restraint system scanning
Transmission — Gearbox fault detection
Immobilizer — Anti-theft system access
Climate Control — HVAC system diagnostics
🔧 Special Reset & Calibration Functions
Oil Service Reset — Clear the oil life reminder after every service
Brake Pad Reset (EPB) — Electronic parking brake retraction for pad replacement
Steering Angle Calibration (SAS) — Recalibrate after wheel alignment or steering work
Throttle Matching — Relearn throttle position after cleaning or replacement
🌐 Universal OBD2 Compatibility
Not just for Mercedes. The KW331 also works as a universal OBD2 scanner for all 12V gasoline and diesel vehicles with OBD2/EOBD compliance — read and erase codes, view live data, and run I/M readiness tests on any car.
🛡️ Built for Professionals & DIY Enthusiasts
2.4-inch high-resolution LCD screen
Compact handheld design with rugged anti-slip casing
Multi-language support: English & German
Lifetime free software updates via USB (Windows compatible)
CE & RoHS certified
📐 Technical Specifications
Specification
Value
Display
2.4-inch LCD
Compatible Vehicles
Mercedes-Benz, Maybach, Smart (12V Gas/Diesel)
OBD2 Protocols
CAN, ISO9141-2, KWP2000, SAE J1850
Update Method
USB / Online (Windows)
Languages
English, German
Certifications
CE, RoHS
📦 What's in the Box
1× KONNWEI KW331 Scan Tool
1× OBD2 Cable
1× USB Update Cable
1× Protective Nylon Carrying Bag
1× User Manual
❓ Frequently Asked Questions
Q: Does the KW331 work on all Mercedes-Benz models? A: Yes, it supports Mercedes-Benz, Maybach, and Smart vehicles with 12V gasoline or diesel engines.
Q: Can I use it on non-Mercedes cars? A: Yes, it functions as a universal OBD2 scanner for all 12V OBD2/EOBD compliant vehicles for basic engine diagnostics.
Q: Are software updates free? A: Yes, lifetime free updates are available via USB connection to a Windows PC.
