Otoeko • OTO0025
Mercedes-Benz SD Connect C4 & C5 14-Pin Round Main Diagnostic Cable for Sprinter, Vito, Trucks & Buses
Mercedes-Benz SD Connect C4 & C5 14-Pin Round Main Diagnostic Cable for Sprinter, Vito, Trucks & Buses
- OTO0025
- Otoeko
Engineered for Professional Workshop Demands
The OTO0025 is built to deliver speed, accuracy, and stability in busy service bays.
Direct 26-Pin Multiplexer Connection
Plugs straight into the SD Connect C4/C5 main socket without intermediate adapters, enabling automatic internal K-Line relay switching.
Full DAS & HHT-WIN Software Compatibility
Supports complete Quick Test scanning and individual module diagnostics inside Mercedes DAS and HHT-WIN (Hand Held Tester).
Complete Sprinter, Vito W638 & VW LT2 Coverage
Communicates with CDI/TDI Engine, Sprintshift automated gearbox, WSP Immobilizer, ABS/ESP, Airbag, and Instrument Cluster modules.
24V Heavy-Duty Truck & Coach Support
Connects to PLD (MR) Engine, FR/ADM Drive Control, GS Gearbox, and BS/EPB Braking modules on Actros, Atego, Axor, Vario, Unimog, and buses.
ARCHITECTURE
Direct 26-Pin Multiplexer Connection
Plugs straight into the SD Connect C4/C5 main socket without intermediate adapters, enabling automatic internal K-Line relay switching.
- Product Type: Mercedes SD C4 / C5 14-Pin Round Main Diagnostic Cable
- Vehicle Connector: 14-Pin Male Circular (Twist-Lock Ring)
- Multiplexer Connector: 26-Pin Rectangular Push-Pull (SD Connect C4 / C5)
- Compatible Software: Mercedes Xentry / DAS & HHT-WIN
DIAGNOSTICS
Full DAS & HHT-WIN Software Compatibility
Supports complete Quick Test scanning and individual module diagnostics inside Mercedes DAS and HHT-WIN (Hand Held Tester).
- Voltage Rating: 12V Light Commercial & 24V Heavy-Duty Systems
- Conductor Material: 100% Pure Copper, Full 14-Pin Multiplex Wiring
- Outer Jacket: Oil- & Heat-Resistant Industrial PVC
- Cable Length: Approx. 1.3 – 1.5 Meters
COMPATIBILITY
Complete Sprinter, Vito W638 & VW LT2 Coverage
Communicates with CDI/TDI Engine, Sprintshift automated gearbox, WSP Immobilizer, ABS/ESP, Airbag, and Instrument Cluster modules.
Detailed Visual & Technical Showcase
Close-up details and application views of the OTO0025.
Technical Specifications & System Parameters
Complete manufacturer-verified technical data and operating ranges.
| Product Type | Mercedes SD C4 / C5 14-Pin Round Main Diagnostic Cable |
|---|---|
| Vehicle Connector | 14-Pin Male Circular (Twist-Lock Ring) |
| Multiplexer Connector | 26-Pin Rectangular Push-Pull (SD Connect C4 / C5) |
| Compatible Software | Mercedes Xentry / DAS & HHT-WIN |
| Voltage Rating | 12V Light Commercial & 24V Heavy-Duty Systems |
|---|---|
| Conductor Material | 100% Pure Copper, Full 14-Pin Multiplex Wiring |
| Outer Jacket | Oil- & Heat-Resistant Industrial PVC |
| Cable Length | Approx. 1.3 – 1.5 Meters |
Workshop Application & Operating Guide
Recommended 4-step standard procedure for accurate results.
Package Contents — Ready for the Workshop
Complete kit inspected prior to dispatch.
6 Months Otoeko Warranty Official Otoeko Warranty
The OTO0025 is backed by a 6 Months Otoeko Warranty official Otoeko warranty against manufacturing defects, with full technical support.
Frequently Asked Questions
Key technical questions from technicians and workshops about the OTO0025.
How is this different from a cheap OBD2-to-14-pin adapter pigtail?
Generic OBD2-to-14-pin adapters cannot switch K-Lines and typically only read the engine ECU. This dedicated main cable plugs directly into the 26-pin port of the C4/C5 multiplexer, wiring all 14 pins to the internal relays so you can access ABS, Immobilizer, Gearbox, and Body modules.
Can I use it on both 12V Sprinter vans and 24V Actros/Atego trucks?
Yes! Both 12V vans and 24V Mercedes commercial vehicles share the same 14-pin round port standard, and this cable supports both voltage systems.
Does this cable fit the older Star Diagnosis C3 multiplexer?
No, this cable has the 26-pin rectangular plug for SD Connect C4 and C5 units. Older C3 multiplexers use a 19-pin round screw-lock plug.
Does it work on Volkswagen LT2 vans?
Yes, 1996–2006 VW LT2 (LT28/LT35/LT46) vans use the Mercedes 14-pin diagnostic socket and are fully supported.
Are all 14 pins populated inside the cable?
Yes, it features a complete 14-pin factory pinout for full HHT-WIN and DAS multiplexing.
When will my order ship?
It ships the same business day from our warehouse with an official invoice.