Autel Original Benz 38-Pin Male to 16-Pin OBDII Adapter Cable

Connecting your older Mercedes-Benz to a modern Autel scanner is effortless with the Autel Original Benz 38-pin adapter. This OBD2 cable for Mercedes bridges the 38-pin diagnostic port (found on pre-2001 Mercedes models) to the standard 16-pin OBDII connector on Autel scanners. Designed for mechanics and DIY enthusiasts alike, it lets you perform advanced diagnostics (full-system scans, ECU coding, live data, etc.) on legacy Benz vehicles using your Autel tool. Built to Autel’s strict quality standards, this adapter uses industrial-grade materials and heavy-duty connectors to ensure stable, high-speed data transmission.

Key Features

• Autel Original Quality: Official Autel adapter (Part #908-BENZ38) built to factory specs. Industrial-grade ABS housing and heavy-duty connectors deliver stable, high-speed communication.
• OBD1 to OBD2 Support: Converts a Mercedes 38-pin OBD1 (round) port to the universal 16-pin OBDII plug. Simply attach the 38-pin end to the Benz’s diagnostic connector and the 16-pin end to your Autel scanner.
• Advanced Diagnostics: Enables full-system troubleshooting on older Benz models. Use your Autel tool to read/clear fault codes, monitor live sensor data, perform ECU coding and perform bi-directional tests on engine, ABS, SRS, transmission, and more.
• Plug-and-Play Design: No wiring or soldering required. Just plug in and power on the vehicle (ignition to ON) to activate the diagnostic port. Works seamlessly with Autel’s user-friendly interface.

Compatibility

• Vehicle Models: Fits Mercedes-Benz cars before 2001 equipped with the 38-pin OBD1 diagnostic port. Common chassis include W107/W124/W126 (older E- and S-Classes), W201/W202 (C-Class), W208/W210 (CLK/E-Class), R170 (SLK), R129 (SL) and similar models. In short, any Benz with a 38-pin socket (usually under the dash or in fusebox area) will work.
• Autel Scanners: Designed for Autel diagnostic tools. Compatible with Autel MaxiSys and MaxiCOM series .

Including 

• MK808S
• MK808BT PRO
• MK900
• MP808 series
• MP900 series
• MS906 Pro
• Elite II Pro
• MS909
• MS919 Ultra and more. (Note: This cable is specifically engineered for Autel scanners and is not recommended for use with other brands.)

Applications & Benefits

• Comprehensive Diagnostics: With this adapter, your Autel scanner can perform comprehensive diagnostics on pre-2001 Mercedes-Benz just as it would on newer OBD2 vehicles. This includes reading/clearing codes in all modules, performing live-data streaming, activating components (bi-directional tests), and even advanced functions like ECU coding.
• Professional Workshops: Technicians can service vintage Benz models without investing in separate legacy scanners. Quickly switch your Autel tool between OBD2 and OBD1 cars.
• DIY Enthusiasts: Handy for home mechanics working on older Benz – now you can use one Autel scanner for both modern and classic models. Diagnose engine issues, reset warning lights, and complete maintenance tasks yourself.
• Durability & Reliability: The rugged cable and connectors are built to withstand frequent plugging/unplugging in a workshop. Autel’s strict quality control means you get a reliable, factory-grade adapter cable. Backed by a 1-year warranty, it’s a risk-free upgrade to your diagnostic gear.

Technical Specifications

Frequently Asked Questions

• What does this adapter cable do?
  It lets an Autel OBD2 scanner talk to an older Mercedes’ 38-pin diagnostic port. Basically, it converts the Benz’s original 38-pin OBD1 connector to the 16-pin OBDII plug, enabling full-system diagnostics on pre-2001 models.
• Which Mercedes models need this?
  Any Mercedes-Benz with a 38-pin diagnostic socket (usually made before 2001). Typical examples are C-Class (W201/202), E-Class (W124/210), S-Class (W126), SLK (R170), SL (R129), CLK (W208), and others. Check under the dash or in the fuse panel area; if you see a round 38-pin port, this adapter is needed.
• Will it work with any scan tool?
  No. This adapter is specifically for use with Autel diagnostic scanners. It works seamlessly with Autel MaxiSys/MX/MP/MS series models. It is not guaranteed to work with tools from other brands.
• Do I need to power anything?
  No extra power is needed. Just connect the adapter between the car’s 38-pin port and your Autel scanner. Turn the vehicle ignition to ON (engine off); the scanner will power the adapter through the car’s diagnostic port.
• Is this just the cable?
  Yes. This listing is for the adapter cable only (Autel scanner sold separately). It includes the 38-pin to 16-pin cable. You will receive the adapter cable and can use it with your existing Autel scanner.
• What if I can’t get a reading?
  First, make sure the ignition is on and the cable is firmly seated on both ends. Check that your scanner software is updated and supports older Mercedes models. If issues persist, try cleaning the connector pins or reseating the adapter – sometimes corrosion or a loose fit can interrupt communication.
• Warranty and Support?
  This is an Autel original accessory, backed by Autel’s quality guarantee. It comes with a 1-year warranty against defects and Autel technical support.

User Tips

• Ignition On: Always turn the key to the ON/Run position (engine off) before connecting the adapter. This powers the 38-pin port.
• Locate the Port: On many models, the 38-pin socket is hidden behind a cover under the passenger’s dashboard or in the fuse box. A flashlight can help.
• Connector Alignment: Note the orientation of the 38-pin plug (marked “BENZ”) and align it carefully – the pins are delicate. Do not force it; it should slide in smoothly.
• Avoid Interference: Keep the cable away from hot engine parts or rotating components. Route the cord so it doesn’t get pinched by the dash or pedals.
• Store Properly: When not in use, store the adapter in a dry place. Coil it loosely to avoid bending the wires.