Mercedes Diagnostic Cable 38Pin OBD1 for SD Connect C4 stable workshop connection

Mercedes 38Pin OBD1 Diagnostic Cable for SD Connect C4

• ✔ Robust workshop quality for daily diagnostic use
• ✔ Secure signal transmission for stable vehicle communication
• ✔ Precisely fitting 38Pin connector for older Mercedes-Benz models
• ✔ High-quality contacts to reduce communication errors
• ✔ Designed for professional use with SD Connect C4

This Mercedes diagnostic cable reliably connects vehicles with a 38Pin OBD1 diagnostic interface to the SD Connect C4 Star Diagnosis. The adapter cable is ideal for workshops, diagnostic technicians, and professional users who want to diagnose older Mercedes-Benz series or replace existing cables.

This item is an adapter or connecting cable and not a diagnostic device or scanner.

Compatible with Mercedes Star Diagnosis SD Connect C4

The connecting cable was specifically developed for use with Mercedes-Benz SD Connect C4. Systems based on Xentry are supported, as well as applications such as DAS, WIS/ASRA, and EPC.

Important: Actual usage is model-dependent, vehicle-dependent, and control unit-dependent. Before purchasing, it should be checked whether the vehicle has the round 38Pin OBD1 connector.

Why high-quality diagnostic cables are crucial

Especially with older diagnostic systems, stable signal transmission is crucial. Inferior OBD adapters or poorly manufactured diagnostic cables can cause communication breakdowns, contact problems, or unstable data transmission.

This workshop cable features precisely manufactured plug contacts and clean shielding to reduce electrical interference. This keeps the connection between the vehicle and the diagnostic system stable even during longer diagnostic work.

Designed for professional diagnostic environments

The adapter cable is designed for daily workshop use. The robust construction supports durable use with frequent plugging and unplugging in everyday diagnostic work.

Especially with older Mercedes-Benz series with K-line or manufacturer-specific diagnostic protocols, the quality of the connection plays an important role. A stable physical connection is a prerequisite for reliable communication processes between the vehicle and the multiplexer.

Suitable Mercedes-Benz series with 38Pin OBD1

This diagnostic cable is suitable for many older Mercedes-Benz models with a 38Pin diagnostic connector in the engine compartment, among others.

• Mercedes-Benz W202
• Mercedes-Benz W210
• Mercedes-Benz W140
• Mercedes-Benz R129

Note: Newer vehicles with a standardized 16-pin OBD2 connector do not require this 38Pin adapter cable.

Reliable connection for diagnostic work

The cable establishes the physical connection between the vehicle and the SD Connect C4. It supports secure data transmission during diagnostic work, control unit communication, and typical workshop test processes.

High-quality shielding and stable connectors help to avoid signal loss and connection interruptions. Especially in professional use, this reduces unnecessary diagnostic breakdowns and increases operational safety.

Ideal as a replacement cable or additional workshop solution

In workshop operations, an additional connecting cable is often recommended as a spare. Worn or damaged cables can impair vehicle communication and lead to unnecessary interruptions.

This OBD1 connecting cable offers a reliable solution for professional diagnostic environments with Mercedes-Benz Star Diagnosis systems.

Free shipping from €50 (Germany) – within the EU from €100

Delivery

Delivery is made to the delivery address provided by the customer during the ordering process. By way of exception, where PayPal is selected as the payment method, the delivery address stored with PayPal at the time of payment is decisive.

If delivery to the customer was not possible and the transport company returns the goods to the seller, the customer bears the costs of the unsuccessful delivery. This does not apply where the customer exercises their right of withdrawal by refusing acceptance, where they are not responsible for the circumstance that made delivery impossible, or where they were temporarily prevented from accepting the goods – unless the seller had given them reasonable advance notice of the delivery.

Shipping costs

• Germany: free from an order value of €50, below that €3.99
• European Union: free from an order value of €100, below that €14.99
• Switzerland: €20.00
• United Kingdom: GBP 20.00

Delivery area and delivery time

We deliver to Germany, to the 26 other countries of the European Union and to Switzerland and the United Kingdom. We are currently unable to deliver to other countries.

For deliveries to Switzerland and the United Kingdom, customs duties, import taxes or other charges may be incurred in addition; these are borne by the customer.

The delivery time within Germany is usually 1–3 working days.

Payment methods

You can pay by credit card (Visa, Mastercard, Maestro), PayPal, Klarna (purchase on account or instalments), Shop Pay, Apple Pay, Google Pay, advance payment by bank transfer or cash on delivery.

Cash on delivery is only available for deliveries within Germany from an order value of €50. An additional fee of €9.99 is charged for it.

Digital licences and activations

Update licences, secure gateway activations and HaynesPro access are digital goods. No shipping costs apply – you will receive the activation code by email once payment has been received, usually within 1–3 working days.

If the licence is tied to a device, enter your device’s serial number directly in the order form when purchasing. That way we can set up the activation for your device without further enquiries.

Please note: for digital licences the right of withdrawal expires as soon as we have begun providing the item and you have expressly agreed to this beforehand. For devices and all other goods, the statutory right of withdrawal applies unchanged.