Airbag control unit with part number A 907 900 48 07

What is the function of the airbag control unit A 907 900 48 07?

The airbag control unit A 907 900 48 07 is the central control module for the occupant restraint system (SRS) in the Mercedes-Benz Sprinter W907 from model year 2018 onwards. It processes signals from crash sensors to deploy airbags and seatbelt pretensioners in the event of a collision, while also storing relevant event data.

This module, often installed beneath the center console or front seat, plays a crucial role in the vehicle’s passive safety. It continuously monitors all components of the restraint system, from impact sensors to the airbag modules themselves.

This specific part number is designed for the Sprinter W907’s electronic architecture. It is important to note that related part numbers such as A 907 900 41 05 (Bosch 0 285 015 383) or A9079017900 exist for W907/W910 variants, underscoring the importance of correct identification during repair or replacement.

Why does the control unit A 907 900 48 07 fail?

The most common causes of failure for the control unit A 907 900 48 07 are internal hardware defects, which manifest as error codes like 9013, as well as stored crash data following an accident that locks the module. Moisture can also lead to irreparable damage to the electronics.

A primary defect involves internal circuit board failures. These typically present as severe hardware malfunctions recorded in the vehicle’s diagnostic memory, triggering the airbag warning light.

After a crash, crash data is permanently stored in the control unit’s memory. This lockout serves as a safety measure, preventing further use even if the vehicle has been externally repaired. Clearing this data is a critical step in the repair process.

Less frequently, but equally critical, are damages caused by moisture ingress. Such moisture can result in corrosion and short circuits on the circuit board, making repairs difficult or impossible.

How do you recognize a fault in the airbag control unit?

A defective airbag control unit A 907 900 48 07 usually shows up as a constantly illuminated or flashing airbag warning light. Diagnostic tools may be unable to communicate with the module or read specific error codes such as “Internal Error” (e.g., 9013).

The most obvious sign is the activated SRS warning light on the instrument cluster, indicating that the safety system is non-functional and would not deploy correctly in the event of a crash.

During workshop diagnostics, it often becomes apparent that the control unit is no longer responsive. Alternatively, error codes such as 9013 (a serious hardware fault in the Sprinter) or messages related to the fuel shut-off valve may appear.

In some cases, the warning light only illuminates intermittently, suggesting an emerging fault or contact issue; however, this should be checked immediately, as safety is no longer guaranteed.

In which vehicles is A 907 900 48 07 installed?

The airbag control unit with part number A 907 900 48 07 is specifically designed for the Mercedes-Benz Sprinter of the W907 series. At Airbag24, this module is professionally refurbished for all W907 Sprinter variants from model year 2018 onward.

The primary application of this part number is exclusively found in the third generation of the Mercedes-Benz Sprinter. Specifically, the control unit is used in the following model:

Mercedes-Benz Sprinter (W907 series), from model year 2018 to the present.

Is repairing the control unit A 907 900 48 07 worthwhile?

Yes, repair is both economically and technically sensible. It is significantly cheaper than purchasing a new unit, which often costs over 500 euros. A professional repair restores full functionality, can be installed plug-and-play without coding, and is environmentally friendly.

The biggest advantage lies in substantial cost savings. While a new unit quickly exceeds the 500-euro threshold, a repair is often available at a fraction of that price, offering a fully viable alternative.

A repaired control unit is “plug-and-play.” This means that after installation, it requires no extensive coding or training at the dealership, saving additional workshop costs and time.

Moreover, refurbishment represents a sustainable solution. Rather than discarding a complex electronic component, it undergoes expert reconditioning, conserving resources and avoiding electronic waste.

How does the repair process work at Airbag24?

After removing the control unit, you send it to Airbag24. There, a precise diagnosis is performed, followed by repair of any hardware defects and deletion of crash data. Upon successful functional testing, the plug-and-play‑ready module is returned with 2 years’ statutory liability for defects.

The process begins with the professional removal of the control unit from the Mercedes Sprinter. It is typically located beneath the center console or one of the front seats.

After secure packaging and shipment to Airbag24, our technicians perform an incoming inspection. During this step, reported faults are verified, and the circuit board is examined for visible damage, such as moisture-related issues.

The actual repair involves replacing defective electronic components and professionally clearing the crash-data lockout. Subsequently, the control unit is tested on a test bench to ensure flawless operation of all circuits.

The refurbished unit is returned to you ready for installation. Of course, you receive 2 years' statutory liability for defects on the completed repair.