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OBDSTAR  |  SKU: T003

OBDSTAR (T003) | Mercedes-Benz 48V Battery + DCDC Module – 15-pins DB15 Adapter Cable | Passenger Car

€21,95 incl.
€18,14 excl.

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The OBDSTAR T003has on the device side a15-pin DB15 connector (male)for the OBDSTAR diagnostic platform and on the vehicle side two separate connectors that connect directly to the48V battery pack respectively the DC/DC converter module of Mercedes-Benz passenger vehicles. The cable connectors are labelled with "48V BATTERY" and "DCDC".

The 48V components in the EQ Boost on-board network are not accessible via the standard OBD2 diagnostic portaccessible. This cable provides the direct connection bridge between test equipment and those components. During testing, the signals from thediagnostic tool forwarded to the relevant modules, allowing voltage, status and operation of the battery and DC-DC converter to be assessed. The cable provides access to these two components and nothing beyond: standard vehicle diagnostics remain via the OBD2 port run. The models listed below are fitted with chassis designation, without production years. Working on 48V components requires knowledge of safety protocols; improper use may damage the module or battery system.

KEY BENEFITS

✔Access outside OBD2— the 48V battery system and DC/DC module are not accessible via the standard diagnostic port; this cable enables access to both.
✔Labelled conductors— the labels "48V BATTERY" and "DCDC" prevent confusion when connecting to the vehicle side.
✔Battery activation test supported— the 48V battery power-on test enables assessment of activation status and basic operation.
✔Two modules in one cable— the battery and DC-DC converter are controlled using the same cable, each via its own connector.

IMPORTANT NOTES

✕OBDSTAR test platform only— the cable is not compatible with diagnostic equipment from other manufacturers.
✕Adds no additional coverage— the available tests come from your own device; the cable only provides the physical connection.
✕Brand and voltage-specific— the cable is designed for Mercedes-Benz 48V systems; other vehicle makes or voltage systems are not supported.
✕Safety knowledge required— working on 48V components requires knowledge of the applicable protocols; improper use can cause damage to the module or battery system.

Applications and functionality

Via the OBDSTAR test platform, the cable supports the following operations on the Mercedes-Benz 48V electrical system.

Control units you can access

  • 48V battery system:Connected via the conductor labelled "48V BATTERY".
  • DC/DC converter module:Connected via the conductor labelled "DCDC" for monitoring between the 48V and 12V on-board electrical systems.

What you can do

  • 48V battery activation test:Perform a power-on test cycle and assess the activation status and basic behaviour of the battery system.
  • DC/DC module diagnostics:Read the operation and status of the converter between the 48V and 12V vehicle electrical systems.
  • Working directly on the module:Bypass the standard OBD2 port for diagnostic tests that cannot be performed through the regular diagnostic network.
  • Voltage and status monitoring:Assess the measured battery and converter values via the test platform.
  • Please note:The cable does not perform tests itself; the OBDSTAR test platform and the associated procedure determine what is available per model.

Compatible vehicles and applications

The determining factor is the 48V EQ Boost mild-hybrid electrical system with DC/DC converter, not the model series itself.The models listed below are identified by chassis designation; production years are not specified in the source documentation. Within the same series, variants without 48V systems are also available.

Mercedes-Benz:

  • A-Class (W177):Models with 48V EQ Boost mild-hybrid system.
  • C-Class (W205/W206):Models with 48V EQ Boost mild-hybrid system.
  • E-Class (W213):Models with 48V EQ Boost mild-hybrid system.
  • GLE (V167):Models with 48V EQ Boost mild-hybrid system.
  • S-Class (W222/W223):Models with 48V EQ Boost mild-hybrid system.
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Good to know:The 48V battery connector and DC/DC connector are typically located in the engine compartment or beneath the boot lid, depending on the model; consult the vehicle-specific wiring diagram.Check whether the vehicle has a 48V EQ Boost system and which chassis variant it is before placing your order.

Package Contents

  • 1x OBDSTAR (T003) | Mercedes-Benz 48V Battery + DCDC Module – 15-pin DB15 Adapter Cable | Passenger Vehicle

Technical specifications

General

The brand of the cable or adapter. It often has to match the brand of your diagnostic tool.Brand
OBDSTAR
The type of product: a separate adapter cable, an adapter without a cable or a complete set.Product type
Adapter cable
The types of vehicles or machinery on which the cable can be used. This shows quickly whether it suits the vehicles entering your workshop.Vehicle types
  • Passenger car

Connections

The connector that plugs into the diagnostic port of the vehicle or machine. It must fit exactly.Vehicle-side connector
Mercedes-Benz 48 V Accu + DCDC Module
The connector on the side of your diagnostic tool or interface. Usually a 16-pin OBD2 connector.Tool-side connector
15-pin DB15

Size and weight

The weight of the cable or adapter.Weight
0.15 kg
Control units
48 V battery system and DC/DC converter module

Other specifications

Application
Testing the 48V battery system and DC/DC converter in Mercedes-Benz passenger vehicles
Device-side Connection
15-pin DB15
Model Range
Mercedes-Benz models with 48V EQ Boost mild-hybrid system; production years not specified
Required to Use
OBDSTAR programmer with 15-pin DB15 interface, such as the DC706 with MP001 kit
Additional Requirements
OBDSTAR test platform and safe working practices for 48V components