Airbag control unit with part number 1608005680

What is the function of the airbag control unit 1608005680?

The control unit with PSA original part number 1608005680 is the central control module (SRS ECU) of the airbag system in models such as the Citroën Jumper I and II. It processes signals from the acceleration sensors, stores relevant crash data, and, in the event of a collision, controls the deployment of airbags and seatbelt pretensioners.

As a safety-critical component, it is responsible for the proper functioning of the entire passive safety system. The unit remains continuously active to monitor system readiness and, when necessary, activate the pyrotechnic restraint devices.

In case of internal faults or after an accident involving data storage, the SRS warning light may illuminate and the deployment function may be disabled to prevent unintended activations.

What defects occur in the control unit 1608005680?

The most common reason for repair is stored crash data following an accident, which locks the control unit and activates the SRS warning light. Other typical defects include internal electronic malfunctions leading to complete communication failure, as well as physical damage caused by water ingress, corrosion, or overvoltage.

After a crash, relevant data is permanently recorded in the control unit’s memory. This results in the airbag warning light remaining illuminated and the system being deactivated for safety reasons. Resetting this data is a core task of the repair process.

Another defect manifests as internal board-level failures, often triggering error codes such as “control unit defective” or causing a complete loss of communication with diagnostic equipment, rendering the system unreadable.

External factors like moisture can lead to corrosion at connectors and on the circuit board. Similarly, voltage spikes in the vehicle’s electrical system may damage sensitive electronic components such as voltage regulators, MOSFETs, or microprocessors.

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

A defective airbag control unit 1608005680 is primarily indicated by the permanently illuminated red airbag or SRS warning light in the instrument cluster. Additionally, diagnostic tools may fail to establish communication with the control unit, or specific error codes such as “internal fault” may be logged.

The most obvious symptom is the persistently lit SRS warning light, which does not extinguish after starting the engine—signaling a serious stored fault or hardware malfunction.

In the workshop, the defect often becomes apparent when the control unit becomes unresponsive. Attempts to read the fault memory fail because communication via the CAN bus interface is no longer possible.

When error codes are retrieved, entries such as “control unit defective” or specific communication errors directly point to an internal issue within the device rather than a problem with external sensors or airbags.

In which vehicles is the control unit 1608005680 installed?

The PSA part number 1608005680 is specifically intended for Citroën van series. At Airbag24, we primarily service this control unit for the first- and second-generation Citroën Jumper. Careful verification of the part number on the removed unit is essential for correct identification.

At Airbag24, the airbag control unit with part number 1608005680 is repaired for the Citroën Jumper I, manufactured from 1994 to 2002.

Similarly, the control unit is also found in the successor model, the Citroën Jumper II, produced between 2001 and 2006, and is repaired by us.

What are the advantages of repairing 1608005680?

Repair offers a cost-effective alternative to expensive new purchases, delivering significant savings. According to dealer price lists, a new unit can cost around 800 euros. In addition, you receive a 12-month warranty on the professionally performed restoration.

The greatest benefit lies in the substantial cost reduction compared to a new unit—you pay only a fraction of the price for a fully functional, tested control unit.

Since your original control unit is repaired, the vehicle-specific coding remains intact, avoiding potential complications associated with time-consuming reprogramming or recalibration required for new or used replacement parts.

How does the repair process work at Airbag24?

Professional repair at Airbag24 includes precise diagnostics, secure deletion of stored crash data, and electronic restoration down to the component level. Following a comprehensive functional and communication check, the unit is returned to you with a 12-month warranty.

Before removal, the vehicle’s fault memory should be read out. For safety reasons, disconnect the vehicle battery and observe the manufacturer‑specified waiting period prior to disassembly to prevent unintended deployment.

Upon receipt at Airbag24, an initial inspection and visual check of the circuit board are performed. Defective electronic components such as voltage regulators, capacitors, or memory chips are professionally replaced, and cold solder joints are re-soldered.

A key step is processing the stored crash data. This data is read out and reset to restore the control unit to its pre‑accident operational state. Finally, a comprehensive functional test is carried out to verify proper communication and internal self‑tests.

What shipping options are available at Airbag24?

To ensure flexible handling, Airbag24 offers various shipping methods. You can either send your defective control unit free of charge yourself or arrange a convenient UPS pickup at your preferred location. Return shipping is available either via free standard UPS delivery or expedited UPS Express, including cash on delivery.

For outbound shipping, you have two options: ship the package directly to us, or use the convenient UPS pickup service, which collects the package from your home or workshop.

For return shipments, standard UPS delivery is free of charge. If speed is essential, UPS Express is available. Both shipping methods can, upon request, be combined with cash on delivery. Alternatively, personal collection at our premises is also possible.