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Mercedes Benz  |  SKU: SW10120

Mercedes Benz SD CONNECT C4 38Pin OBD1 OBD2 Star diagnosis

✓ High reliability and long service life
✓ Easy handling and user-friendliness
✓ Fast and competent customer service
✓ 12 months warranty

11900 €
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Description

Connection cable for Mercedes Benz Star Diagnosis SD Connect C4 38-pin OBD1

This connection cable is specifically designed for the Mercedes-Benz Star Diagnosis SD Connect C4 with a 38-pin OBD1 connector. It's perfect for replacing your faulty cable or keeping it on hand as an extra cable for diagnostic use .

Product details

Please note: Only the diagnostic cable is offered , without any additional components or software. This cable is ideal for use in a system that uses DAS , WIS/ASRA and EPC based on Xentry.

Features of the Mercedes Benz diagnostic cable

  • High-quality workmanship for long-lasting use
  • Suitable for professional Mercedes Benz Star Diagnosis
  • Optimal compatibility with SD Connect C4 and 38-pin OBD1
  • It connects seamlessly to systems running on the Xentry platform.

Why choose our Mercedes Benz Star Diagnosis cable?

Our diagnostic cables for Mercedes-Benz are made from high-quality materials and are characterized by first-class quality and durability . Rely on a safe and stable connection for your vehicle diagnostics.

Order your diagnostic cable for the Mercedes-Benz Star Diagnosis now.

This connection cable provides a reliable solution for your Mercedes-Benz diagnostic tools . Order today and benefit from our high-quality products and excellent customer service!

Technical background information on the 38-pin OBD1 interface

Development of manufacturer-specific diagnostic ports

Before the introduction of the standardized OBD2 system, Mercedes-Benz used its own 38-pin OBD1 diagnostic interface in the engine compartment. This round connector allows access to various control units such as the engine control unit, transmission control unit, ABS/ESP systems, as well as comfort and body control units. The connection cable offered here provides the physical link between this vehicle-specific interface and the SD Connect C4 unit.

Signal transmission and communication protocols

Unlike modern CAN-based OBD2 systems, many older models use K-wire or manufacturer-specific diagnostic protocols. The 38-pin OBD1 cable must therefore ensure stable and lossless signal transmission. High-quality shielding reduces interference, while precisely manufactured contacts ensure reliable communication between the vehicle and the diagnostic system. An uninterrupted data connection is essential, especially for ECU adaptations or coding.

Workshop benefits and practical applications

Use in professional diagnostic practice

In independent workshops and specialized Mercedes-Benz dealerships, the Mercedes-Benz Star Diagnosis system remains a key tool. A functioning connection cable is essential, especially for older models with a 38-pin OBD1 connector. Reading fault codes, checking live data, performing actuator tests, or resetting service functions – all these processes require a stable physical connection.

Support with repair and maintenance

During complex repairs, such as those involving engine management or automatic transmission problems, the cable provides access to detailed diagnostic data. In combination with DAS , specific test programs can be initiated, while WIS/ASRA provides technical documentation and repair instructions. The cable thus forms the basis for structured troubleshooting and reduces unnecessary parts replacement.

Backup via spare or secondary cable

Especially in workshop settings, it's advisable to keep an extra connection cable on hand. A damaged or worn cable can lead to communication interruptions, increase diagnostic times, and in the worst case, interrupt coding processes. A high-quality replacement cable ensures that diagnostic operations can continue without interruption.

Software and system integration based on Xentry

Compatibility with SD Connect C4

The SD Connect C4 acts as a multiplexer between the vehicle and the diagnostic computer. The 38-pin OBD1 connection cable ensures the physical connection to older Mercedes models. The C4 unit is connected to the diagnostic laptop running Xentry or DAS via LAN or WLAN. The system architecture can only achieve its full potential with a fault-free cable connection.

Interaction with DAS, WIS/ASRA and EPC

DAS enables model- and series-specific diagnostic functions, while WIS/ASRA provides repair information and labor values. The EPC assists in identifying the correct spare parts using the chassis number. The connecting cable is therefore not an isolated accessory, but an integral component of a comprehensive Xentry-based diagnostic system.

Hardware quality as a basis for stable software processes

Diagnostic software can only function as reliably as the underlying hardware. Inferior cables lead to contact problems, voltage drops, or unstable data transmission. This connection cable is designed for continuous use in workshop environments and thus supports stable flashing and coding processes where a constant data connection is essential.

Recommended Mercedes models for use with 38-pin OBD1

Typical model series with 38-pin diagnostic connector

This connection cable is particularly suitable for older Mercedes-Benz models that do not yet have the standardized 16-pin OBD2 interior connector. These include, among others:

  • Mercedes-Benz C-Class W202
  • Mercedes-Benz E-Class W210
  • Mercedes-Benz S-Class W140
  • Mercedes-Benz SL R129

Clear recommendation: Mercedes-Benz E-Class W210

The Mercedes-Benz E-Class W210 deserves special mention. This model series combines extensive electronic systems with the classic 38-pin OBD1 diagnostic connector in the engine compartment. For workshops that regularly service or repair vehicles of this generation, the connection cable in combination with the SD Connect C4 is virtually indispensable. Diagnostics here encompass not only engine and transmission control units, but also comfort and safety systems, making a reliable data connection absolutely essential.

Differentiation from newer OBD2 vehicles

Newer Mercedes models with a 16-pin OBD2 connector in the interior do not require this 38-pin OBD1 cable. Therefore, you should check before purchasing whether your vehicle actually has the round 38-pin diagnostic connector. Technical compatibility with your vehicle type is crucial for efficient diagnostics.

A technically sound investment for professional Mercedes diagnostics

A high-performance diagnostic system consists not only of software and a multiplexer, but also of high-quality connection technology. The connection cable for the Mercedes-Benz Star Diagnosis SD Connect C4 38-pin OBD1 is a key component in the diagnostic process for older Mercedes models. It ensures stable communication, supports precise fault finding, and significantly contributes to efficiency in everyday workshop operations.

For businesses that regularly service vehicles with a 38-pin OBD1 connector, this cable is not an optional add-on, but an essential tool. Its combination of robust construction, optimal compatibility with Xentry-based systems, and precise fit makes it a well-designed solution for professional applications.

Shipping and payment conditions

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The goods are regularly delivered by mail to the delivery address provided by the customer. For processing the transaction, the delivery address stored by the customer on eBay is decisive. However, if PayPal is selected as the payment method, the delivery address stored by the customer with PayPal at the time of payment is decisive.

If delivery to the customer was not possible and the shipping company returns the goods to the seller, the customer bears the costs of the unsuccessful delivery. This does not apply if the customer exercises their right of withdrawal by refusing acceptance, if they are not responsible for the circumstances that led to the impossibility of delivery, or if they were temporarily prevented from accepting the delivery, unless the seller had notified them of the delivery a reasonable time in advance.

You can choose to pay by prepayment, PayPal (direct debit and credit card via PayPal), or cash on delivery. A surcharge of €9.99 will be added for cash on delivery payments.

Free shipping within Germany for orders over €50

Shipping costs within the EU are €14.99.

Delivery within Germany takes 2-3 working days.


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Further information

The importance of automotive diagnostic devices for vehicle maintenance

Original diagnostic devices for cars and trucks are indispensable tools for modern vehicle maintenance and repair. These devices make it possible to read error codes generated by the various control units of a vehicle. By using professional diagnostic devices, workshops and vehicle owners can quickly and precisely identify and resolve problems. This increases the efficiency of the repair processes and contributes to the longevity of the vehicles. Professional diagnostic devices also offer advanced functions such as in-depth diagnostics and programming of control units, which is particularly useful for complex repairs and maintenance work. With a vehicle diagnostic device, you can ensure that your vehicle is always in perfect condition.

Why professional diagnostic devices are indispensable

Professional diagnostic devices are specially designed for use in workshops and by professionals. They offer comprehensive diagnostic capabilities and support a wide range of vehicle makes and models. These devices can not only read and clear error codes , but also display live data and perform special tests such as actuator tests. They also allow the calibration of control units and the performance of service resets. Thanks to these advanced functions , professional diagnostic devices can make the work of mechanics much easier and improve the quality of the repairs carried out. A professional diagnostic device is therefore an indispensable tool for every professional workshop.

How OBD diagnostic devices work

OBD (On-Board Diagnostic) systems are standardized diagnostic tools used in almost all modern vehicles. These systems monitor the vehicle's performance and emissions and store error codes when a problem occurs. OBD diagnostic devices can read these error codes and provide detailed information about the condition of the vehicle. This includes monitoring engine parameters, exhaust emissions and other critical systems. By using OBD diagnostic devices regularly, potential problems can be identified and resolved early before they lead to larger and more costly damage. An OBD diagnostic device should therefore be in every vehicle to make car diagnostics efficient and comprehensive.

Auto diagnostics: A key to efficient vehicle repair

Auto diagnostics includes a variety of techniques and tools for monitoring and analyzing the condition of a vehicle. By using modern original diagnostic devices for cars and trucks Mechanics can carry out precise fault analyses and make targeted repairs. This not only saves time, but also costs for the vehicle owner. Modern diagnostic devices also offer the option of carrying out software updates and making adjustments to the vehicle control units. This is particularly important for optimizing vehicle performance and adapting to individual requirements. The continuous development of diagnostic technology helps to ensure that vehicles can be operated more safely and efficiently. With a reliable car diagnostic device, you always have all the important information at hand to optimally maintain and repair your vehicle.

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