Airbag control unit with part number 0004460642(06)

What is the function of the airbag control unit 0004460642(06)?

The airbag control unit with part number 0004460642(06) is a safety‑critical Mercedes/Bosch ECU, primarily installed in the Mercedes-Benz Sprinter W906. Its main function is to monitor all sensors of the restraint system, evaluate crash data, and precisely and promptly deploy airbags and seatbelt pretensioners in the event of a collision.

As the central control unit of the passive safety system, it continuously processes signals from acceleration sensors and other peripheral components. In an emergency, the control unit decides within milliseconds which restraint systems (e.g., front airbags, seatbelt pretensioners) must be activated to provide optimal occupant protection.

Technically, note that the same hardware may be listed under alternative part numbers such as A9064460542 or A9064461442. Therefore, for a successful repair or replacement, it is crucial to precisely match the part number printed on the device.

What defects occur with 0004460642(06)?

The most common causes of failure for the control unit 0004460642(06) are stored crash data following an accident, which locks the system, as well as internal hardware faults. These often manifest as the non‑erasable error code “Internal Error.” Moisture damage, corrosion on the circuit board, or defective memory chips (EEPROM/Flash) can also lead to failure.

After an accident in which airbags have deployed, the control unit irrevocably stores crash data and locks itself. This lockout is a safety feature that prevents further operation until the system has been professionally inspected and the control unit reset through repair.

Another frequent defect is an internal hardware fault on the circuit board. This often becomes apparent when the airbag warning light remains constantly illuminated, even though external components such as the steering wheel spiral cable have already been checked or replaced. The root cause lies directly in defective SMD components, faulty solder joints, or corrupted memory chips inside the ECU.

Less common but equally critical are damages caused by moisture ingress. These result in corrosion on sensitive traces and components, potentially leading to unpredictable malfunctions or total failure of the control unit.

How do you recognize a defect in the control unit 0004460642(06)?

A defect in the control unit 0004460642(06) primarily manifests as a permanently illuminated airbag warning light in the instrument cluster. Often, the control unit can no longer be read by a diagnostic tool (no communication), or it reports a non‑erasable internal error code indicating a hardware fault.

The most obvious sign is the persistently lit airbag warning light. It does not turn off after starting the vehicle, signaling a permanent, safety‑relevant system error.

During workshop diagnostics, the problem often shows up as a lack of communication—the control unit is no longer reachable via the diagnostic interface. Alternatively, an error code such as “Internal Control Unit Error” is read, which cannot be cleared and clearly points to a defect within the ECU itself.

Following an accident, the system becomes locked. Although the airbag warning light remains on, specific error codes may no longer be recorded; instead, a status flag is set, indicating stored crash data and preventing reactivation.

In which vehicles is 0004460642(06) installed?

The airbag control unit with part number 0004460642(06) is specifically designed for Mercedes-Benz models. It is mainly used in the Sprinter van series. At Airbag24, this control unit is repaired specifically for this vehicle generation to restore reliable functionality of the safety system.

At Airbag24, we professionally repair part number 0004460642(06) for the following model:

Mercedes-Benz: Sprinter W906 (model years 2006–2018)

How does repair work at Airbag24?

After sending the removed control unit to Airbag24, a professional diagnosis is performed at the circuit board level. Depending on the nature of the fault, stored crash data is safely erased, defective SMD components such as memory chips or processors are replaced, and cold solder joints are reworked. The unit is then tested and returned with a 12‑month warranty.

The process begins with the proper removal of the control unit from the vehicle. To expedite diagnosis, it helps to include a log of the error codes read out. Upon receipt at Airbag24, our technicians conduct a comprehensive analysis to pinpoint the exact cause of the fault.

The actual repair is performed at the component level in an ESD‑protected environment. For stored crash data, the memory contents are properly reset. If a hardware defect is present, faulty components such as EEPROM/flash memory, capacitors, or other SMD parts are desoldered and replaced with new, high‑quality components.

Upon completion of the repair, the control unit undergoes comprehensive testing to ensure full functionality. All repairs at Airbag24 include a 12‑month warranty.

What shipping options are available at Airbag24?

For the outbound shipment, you can either send the control unit to Airbag24 yourself free of charge or arrange a convenient UPS pickup from your preferred location. For the return shipment, several options are available: free standard UPS shipping as well as faster UPS Express shipping, both also offered with cash on delivery. Self‑pickup is also possible.

When sending your package to us, you have the choice: you can ship it yourself or use the convenient UPS pickup service, which collects the package from an address of your choosing.

After successful repair, we offer various return‑shipping options. Standard UPS shipping is free for you. If you need the part back sooner, you can opt for UPS Express shipping. Both options are also available with cash on delivery.

Of course, you can also pick up your repaired control unit in person at our premises.