Airbag control unit with part number 1388160080

What is the function of airbag control unit 1388160080?

The part number 1388160080 refers to an airbag control unit, also known as the SRS ECU, which serves as the central control unit for the passive safety system in commercial vehicles such as the Citroën Jumper II, Peugeot e-Boxer, and the Fiat Ducato family. Its primary task is to process sensor data and precisely trigger the airbags and seatbelt pretensioners in the event of a crash.

As the “brain” of the restraint system, this control unit continuously monitors all connected components, including crash sensors, seat occupancy mats, the airbag modules themselves, and the pyrotechnic seatbelt pretensioners. It performs a self-test every time the vehicle is started to ensure the entire system is operational.

In the event of a collision, the device analyzes acceleration sensor data within milliseconds. If the readings exceed predefined thresholds, it sends ignition signals to the appropriate airbags and seatbelt pretensioners to provide optimal protection for occupants.

Why does control unit 1388160080 fail?

Failures of control unit 1388160080 are typically hardware-related. The most common cause is the storage of crash data after an accident, which locks the unit. Other defects arise from failed SMD components on the circuit board, damaged memory chips (EEPROM/Flash), or cold solder joints due to thermal stress.

A frequent reason for repair is the irreversible storage of crash data following an airbag deployment. For safety reasons, the control unit locks itself and reports an internal error. This condition cannot be resolved simply by clearing the fault memory at a workshop; it requires intervention at the chip level.

At the electronic level, tiny components often fail. Defective SMD parts—such as resistors, capacitors, or voltage regulators—damaged by voltage spikes in the vehicle’s electrical system are a typical cause. Similarly, long-term thermomechanical stress can lead to hairline cracks in solder joints or broken traces on the circuit board.

The internal memory (EEPROM or Flash chip) can also become damaged, resulting in corrupted or lost configuration data. Consequently, the control unit can no longer perform its functions correctly and displays a persistent error.

When diagnosing and sourcing replacement parts, note that this control unit is also known under alternative part numbers such as 1370978080, 1608428080, or 46858203. These numbers are often technically equivalent and refer to identical or compatible units.

How do you recognize a defect in control unit 1388160080?

A defect in airbag control unit 1388160080 usually manifests through two clear symptoms. The most obvious sign is the permanently illuminated red airbag warning light on the dashboard. Additionally, communication with the control unit via diagnostic equipment often becomes impossible.

The persistently lit airbag warning light is the primary alert for the driver. It does not turn off after starting the engine, indicating that the safety system has detected a critical fault and will not function properly in the event of a crash.

Another clear indication is the lack of communication capability. When a workshop attempts to read the fault memory, the diagnostic tool receives no response from the control unit. This points to a severe internal fault, often involving the power supply or the main processor.

In cases where communication is still possible, error codes are typically stored, pointing to an internal control unit fault, memory damage, or stored crash data. Such errors cannot be cleared and require professional repair.

In which models is control unit 1388160080 installed?

The airbag control unit with part number 1388160080 is primarily used in commercial vehicles from the Stellantis group. At Airbag24, we have extensive experience repairing this unit for specific models, including the Peugeot e-Boxer IV, as well as the Citroën Jumper II and the similar Citroën Relay II, manufactured between 2001 and 2006.

At Airbag24, we repair control unit 1388160080 for the following models listed in our vehicle database:

Peugeot: e-Boxer IV

Citroën: Jumper II (model years 2001–2006), Relay II (model years 2001–2006)

Since these vehicles belong to a large commercial vehicle platform that also includes the Fiat Ducato, it is crucial to verify the exact part number before removal. Compatibility with other models on the same platform is possible but should always be confirmed using the part number.

How is control unit 1388160080 professionally repaired?

Professional repair of control unit 1388160080 at Airbag24 follows a certified process that includes precise diagnostics, component-level refurbishment, and a final functional test. Upon submission, the unit is opened, defective electronic components are replaced, and, if necessary, crash data is securely erased to restore full functionality.

Once the removed control unit arrives at Airbag24, it first undergoes an incoming inspection. Using specialized test setups, the reported fault is verified, and a comprehensive diagnosis of the circuit board is performed.

The actual repair takes place at an ESD‑protected workstation. Experienced technicians open the housing and analyze the circuit board. Defective SMD components are carefully desoldered and replaced with new, high‑quality parts. Damaged traces or cold solder joints are professionally reworked.

If crash data is causing the issue, the relevant memory chips (EEPROM/Flash) are read out. The crash records are erased, and the clean original data is rewritten onto the chip. The memory module is then resoldered back onto the circuit board.

Finally, the repaired control unit is tested again on the simulator. It is checked to ensure flawless communication and that no error codes remain stored. We provide a 12‑month warranty on every successful repair.

What shipping options does Airbag24 offer?

Airbag24 provides you with a flexible and hassle‑free shipping process. For the outbound shipment, you can either send your control unit yourself free of charge or arrange a convenient UPS pickup at your preferred location. Return shipping is standardly free via UPS; alternatively, express delivery or cash on delivery is available.

You have several options for sending us your defective control unit. You can ship the package yourself, bring it in free of charge after prior registration, or use our online portal to request a UPS pickup from any address.

After completing the repair, we will safely return the control unit to you. Standard UPS shipping within 1–3 business days is completely free. If faster delivery is desired, UPS Express shipping (1–2 business days) is also available.

Both return shipping methods—standard and express—can be combined with cash on delivery upon request. Alternatively, you may choose to pick up your repaired unit in person at our facility.