Mercedes 38 Pin OBD1 to 16 Pin OBD2 Adapter Cable – Diagnostic Cable Workshop

Mercedes 38 Pin OBD1 to OBD2 adapter cable for stable diagnostic connections

• ✔ Precisely fitting connector for the 38-pin Mercedes diagnostic port
• ✔ Stable signal transfer for reliable diagnostic work
• ✔ Sturdy contacts to minimise connection faults
• ✔ Hard-wearing cable sheath for daily workshop use
• ✔ For professional diagnostic environments and private users

The Mercedes 38 Pin adapter cable connects the manufacturer-specific 38-pin Mercedes diagnostic port to a classic diagnostic device with a 16-pin OBD2 connection. Existing diagnostic interfaces, workshop devices and OBD2 adapters can therefore continue to be used without a special solution.

This item is an adapter or connecting cable, not a diagnostic device or scanner. The actual diagnostic function depends on the diagnostic device used and the scope of its software.

Version of this cable

This cable leads to a 16-pin OBD2 socket and is therefore intended for diagnostic devices with an OBD2 connection. The 38-pin diagnostic cable for SD Connect C4 is a different item and is available separately in our shop.

Why an OBD1 adapter is needed

Vehicles from the era before the standardised OBD2 interface have manufacturer-specific diagnostic connectors. A diagnostic device with a 16-pin OBD2 socket cannot be plugged in directly. The adapter cable creates the physical link required for the diagnostic hardware to communicate with the vehicle.

Clean signal transfer

Clean data transfer is decisive during diagnostic work. Low-quality adapters can cause dropped signals, communication errors or unstable connections. This adapter cable was built with solid plug contacts and a robust cable structure to minimise interference during diagnosis.

Robust build for workshop and everyday use

• Hard-wearing cable sheath
• Precisely manufactured plug connections
• Firm fit without unnecessary play
• High contact quality to avoid transfer errors

Compatibility

The adapter cable suits vehicles with a manufacturer-specific Mercedes diagnostic port of the stated design and diagnostic devices with a 16-pin OBD2 connection.

• Vehicle side: 38-pin Mercedes (round connector)
• Tool side: 16-pin OBD2 socket
• Suitable for: OBD2 handheld scanners, workshop diagnostic devices, USB and Bluetooth diagnostic interfaces

Compatibility depends on the vehicle and on the diagnostic device. Before buying, please check whether your vehicle has the corresponding diagnostic port and whether your diagnostic device supports the relevant control units.

Important note on function

The adapter cable itself performs no diagnostics. Functions such as reading fault codes, communicating with control units or analysing data are provided exclusively by the connected diagnostic device and its software.

Technical data

Scope of delivery

– Mercedes 38 Pin OBD1 to OBD2 adapter cable

Purchase on account available (Klarna or PayPal).

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.