Airbag control unit with part number 670013905702

What is the function of Airbag Control Unit 670013905702?

The airbag control unit with part number 670013905702 is a Continental equivalent for the central control module of the restraint system in the Ford Mondeo Mk4. It is an electronic module that processes data from crash sensors, deploys airbags and seatbelt pretensioners in the event of a collision, and monitors the system’s status.

As the “brain” of the passive safety system, this control unit continuously evaluates signals from acceleration sensors in the vehicle. Based on this data, it determines the severity of a collision and decides within milliseconds which restraint systems need to be activated to provide optimal occupant protection.

The unit is housed in a robust, silver‑colored enclosure and is typically located to the right of the steering column. Inside, it contains not only microprocessors and memory chips but also internal acceleration sensors that ensure precise data acquisition. Its proper functioning is critical for occupant safety.

Why does Control Unit 670013905702 fail?

The most common cause of failure for Control Unit 670013905702 is the storage of crash data after a collision, which triggers an internal lockout. Other defects are purely hardware‑related and result from aging of electronic components such as capacitors, moisture ingress, or physical damage caused by improper repair attempts.

After deploying airbags or seatbelt pretensioners, an irreversible entry is written into the control unit’s memory, blocking further operation. This is a manufacturer‑imposed safety feature, but it can be reset through professional hardware‑level repairs.

Hardware faults on the circuit board are also a frequent cause. Over time, solder joints may become brittle, or microprocessors and memory chips may fail. Penetrating moisture can lead to corrosion and short circuits, permanently damaging the complex electronics and causing total failure.

It is important to note that the Continental part number 670013905702 is comparable to original Ford part numbers such as 7S7T14B056AC and 7S7T14B056AD. The described defects occur in similar forms across all variants.

How do you recognize a fault in 670013905702?

A defect in Airbag Control Unit 670013905702 almost always manifests as a constantly illuminated or flickering airbag warning light on the instrument cluster. Another clear indication is the inability to communicate with diagnostic tools, preventing both reading and clearing of the fault memory.

The persistently lit airbag indicator light is the primary warning signal for the driver, pointing to a serious malfunction in the restraint system. This inevitably results in failing the main inspection (TÜV).

In the workshop, the fault often becomes apparent when the control unit can no longer be accessed via the OBD interface. Any attempts to establish a connection fail, hindering accurate fault diagnosis on the vehicle.

Additional, more specific symptoms may appear after a collision if crash data has been stored. In some cases, secondary issues have also been observed, such as a faulty speedometer illumination or an interior light that remains on when the vehicle is locked.

In which Ford models is Control Unit 670013905702 installed?

Airbag Control Unit 670013905702, along with its compatible Ford variants, is specifically designed for the fourth generation of the Ford Mondeo (Mk4, type BA7). Compatibility covers the entire production period from 2007 to 2014, including facelift models introduced from 2010 onward.

At Airbag24, we repair the control unit with part number 670013905702 for the following specific models:

Ford Mondeo 4 ’07 (model years 2007–2010)

Ford Mondeo 4 ’07 Facelift (model years 2010–2014)

How is the repair of 670013905702 carried out?

Professional repair of Control Unit 670013905702 involves precise component‑level diagnostics, replacement of defective parts such as microprocessors, and safe resetting of stored crash data. Subsequently, full functionality is verified through testing, ensuring the original, vehicle‑specifically coded unit is preserved.

The process ideally begins with reading the fault memory before removal to narrow down the fault. Removing the unit itself requires unscrewing three Torx screws, with special care taken since the housing contains internal sensors and should not be shaken.

Upon submission to Airbag24, technicians conduct a detailed analysis of the circuit board. Defective components are professionally desoldered and replaced with new, high‑quality parts. Stored crash data is erased at the hardware level, restoring the unit to full operational capability.

Following repair, a comprehensive functional test is performed. The repaired control unit can then be reinstalled in the vehicle; no new coding is required. You receive a 12-month warranty on the completed repair.

What shipping options are available?

To get your defective control unit to us quickly and securely, Airbag24 offers flexible shipping solutions. You can send the package yourself at no cost, or arrange a convenient UPS pickup at your preferred location. For return shipping, free standard and fast express options are available.

For outbound shipping, you have two choices: either ship the carefully packaged control unit to us on your own initiative, or arrange for our shipping partner UPS to pick it up directly from your location.

After successful repair, return shipping is handled according to your preferences. UPS standard shipping is free of charge.

In addition, we offer faster shipping methods such as UPS Express. Both standard and express options can also be selected as cash-on-delivery shipments. Alternatively, you may choose to pick up the repaired unit in person at our facility.