Autel
Autel BENZ14 Adapter
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Autel BENZ14 — Mercedes-Benz 14-Pin Off-Highway Adapter
The Autel BENZ14 is a 14-pin adapter that extends the diagnostic reach of the MaxiSYS MS909CV commercial vehicle tablet to Mercedes-Benz engines installed in off-highway construction and agricultural machines. If you service equipment running Mercedes-Benz diesel engines in non-road applications, this adapter is the connection point between your MS909CV and that equipment.
What This Adapter Does
Mercedes-Benz supplies diesel engines to a wide range of off-highway equipment manufacturers — excavators, wheel loaders, agricultural tractors, and other construction and farming machines. These engines use a proprietary 14-pin diagnostic interface rather than the standard OBD-II connector found on highway vehicles. The BENZ14 adapter provides that physical connection, enabling the MS909CV to communicate with the engine control system for fault code reading, live data, and other diagnostic functions.
Compatible System
- Designed for use with the Autel MaxiSYS MS909CV tablet and corresponding VCI
- Requires the latest software updates on both the MS909CV tablet and VCI — confirm updates are current before use
- Extends coverage to construction and agricultural off-highway machines and vehicles running Mercedes-Benz engines
Who Needs the BENZ14
Heavy equipment dealers, agricultural equipment service centers, construction fleet shops, and independent technicians who work on Mercedes-Benz-powered off-highway equipment. Without this adapter, the MS909CV cannot physically connect to Mercedes-Benz off-highway engine diagnostic ports. If you are investing in the MS909CV for broad heavy-duty coverage, this adapter fills a real gap in off-highway Mercedes-Benz engine service.
Warranty and Support
- One-year limited warranty
- Compatible with Autel MaxiSYS MS909CV tablet (with applicable software)
MS909CV Context
The MS909CV ($5,995) is Autel's flagship commercial vehicle diagnostic tablet — a 9.7-inch touchscreen with Bluetooth VCI, J2534 pass-through, RP1210, and comprehensive coverage for heavy-duty trucks, construction, and agricultural equipment. The BENZ14 at $50 is a targeted expansion adapter that adds Mercedes-Benz off-highway engine diagnostic capability to that platform.
Why Buy the Autel BENZ14 Adapter From Autel Diagnostic Tools?
Autel Diagnostic Tools has specialized in Autel heavy-duty diagnostic equipment since 2016. We carry the MS909CV and the full lineup of heavy-duty adapters including the BENZ14. Free shipping on qualifying orders, free tech support at 866-217-0063, one-year warranty, and knowledgeable guidance on Autel commercial vehicle coverage.
Call 866-217-0063 for quick answers and help!
Specifications
Specifications
Detailed specifications are included in the product description above. For complete technical specs, vehicle coverage lists, or comparison help, call our team at 866-217-0063.
We can look up specific vehicle coverage for any Autel tool in seconds.
Shipping & Returns
Shipping & Returns
Free standard shipping on every order within the continental United States. Most orders ship within 1-2 business days via UPS or FedEx.
Returns: 30-day return policy on unused items in original packaging. Contact us at 866-217-0063 or email to start a return. Restocking fees may apply to opened items.
See our full Shipping & Returns Policy for details.
Warranty
Warranty
All Autel tools come with the manufacturer's standard warranty, typically 1 year from date of purchase. Warranty covers defects in materials and workmanship.
Total Care Program (TCP): Autel offers an annual software update subscription. Your first year of updates is included with purchase. After Year 1, renew through Autel's TCP program to keep receiving the latest vehicle coverage and features.
Questions about warranty or TCP? Call us at 866-217-0063.
Software Updates
Software Updates
First year of software updates included with every Autel diagnostic tool purchase.
Autel releases regular updates that add new vehicle coverage, fix bugs, and unlock new diagnostic functions. Updates are downloaded via Wi-Fi directly on your tool or through the Autel MaxiPC Suite software.
After Year 1: Renew your subscription through Autel's Total Care Program (TCP). Pricing varies by model. We can help you find the right TCP card for your tool.
Browse TCP Cards & Software Updates or call 866-217-0063 for help.

