Airbag control unit with part number 28556 7S003

What does the airbag control unit 28556 7S003 do?

For Nissan, the airbag control unit 28556 7S003 controls the airbags and seatbelt pretensioners in the restraint system (SRS). From the measurements of the crash sensors, it calculates within milliseconds which restraint devices are to be triggered.

It also monitors the system and shows faults via the airbag warning light.

After an accident, it stores crash data and is locked afterwards.

Why does the control unit 28556 7S003 fail?

For the 28556 7S003, the most common cause is crash data stored after an accident, even without a triggered airbag; normal diagnostic tools cannot delete this data. Other possible causes are aged components, cold solder joints, moisture and corrosion at plugs, and voltage spikes.

• Aged electronics
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

The crash data stays in memory until Airbag24 removes it during the repair.

How can you tell that the 28556 7S003 is defective?

On the 28556 7S003, you can recognise a defect from the airbag warning light in the instrument cluster, from fault messages and from a diagnostic tool that has no connection to the control unit. A fault memory that cannot be cleared also counts.

• Airbag warning light, permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool without connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. Please have such signs checked promptly.

Which vehicles is the 28556 7S003 fitted in?

For Nissan, the 28556 7S003 is fitted in these vehicles: Nissan Titan A60 (2004-2015).

The vehicles are shown in the list:

• Nissan Titan A60 (2004-2015)

Compare the part number on the label of the removed unit with this page; this only establishes the identity of the unit. Have the fault memory read out beforehand, because only the log shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0 285 014 624, 1520831000, 152083100B, 1520831U00, 1520831U01, 1520831U0A.

How does the repair of the 28556 7S003 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand, you have the fault memory read out, disconnect the battery and remove the 28556 7S003. Then create a repair order online and send in the unit well packed.

Airbag24 checks the unit, replaces defective components, deletes the crash data and carries out a functional test.

The unit then goes back to you.

Our repairs come with 2 years' statutory liability for defects.

The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 28556 7S003 get to Airbag24?

You send the control unit 28556 7S003 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order in the parcel and pack the unit shockproof.