Airbag control unit with part number 1EA 959 655

What does the airbag control unit 1EA 959 655 do?

The airbag control unit 1EA 959 655 is the central control unit of the restraint system (SRS) for Skoda. It evaluates the signals from the crash sensors and decides in the event of a crash, within milliseconds, which airbags and seatbelt pretensioners are triggered.

While the vehicle is being driven, the unit monitors the entire system without a break. If it detects a fault, it indicates this via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and then locks itself.

Why does the control unit 1EA 959 655 fail?

The most common cause is crash data stored after an accident, even without airbag deployment. Diagnostic tools cannot erase it. Other possible causes include aged components, cold solder joints, moisture and corrosion, and voltage spikes.

The crash data remains in the unit even when the vehicle is back in service. Airbag24 erases it during the repair.

Electronics age, and over time solder joints can go cold. Moisture and corrosion at plug connections disrupt the signal. Voltage spikes, for example from a weak battery or a jump start, also put additional strain on the circuits.

How can you tell that the 1EA 959 655 is defective?

You can recognise a defect on the 1EA 959 655 by the airbag warning light, by fault messages in the instrument cluster and by a diagnostic tool that cannot establish a connection. Then have the system checked promptly.

• Airbag warning light stays on permanently or intermittently
• Fault message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may fail to trigger while the fault persists. The warning light makes the defect visible.

Which vehicles is the 1EA 959 655 fitted in?

The control unit 1EA 959 655 is fitted in these vehicles: Skoda Octavia 4 [NX] (from 2019) and 4 [NX] Facelift (from 2024).

The following vehicle details are assigned to this part number:

• Skoda Octavia 4 [NX] (from 2019)
• Skoda Octavia 4 [NX] Facelift (from 2024)

Check the part number on the label of the removed unit against this page. This only ensures that it is the correct unit. Have the fault memory read out beforehand, because only the log shows whether the control unit is faulty or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 1EA 959 655 AA, 1EA 959 655 AC, 1EA 959 655 CK, 1EA 959 655 FA, 1EA 959 655 T, 1EA959655AB.

How does the repair of the 1EA 959 655 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand you read out the fault memory and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online before you send it in.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. Afterwards, your own unit is returned to you.

This time applies exclusively to checking, repairing and testing at Airbag24.

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 1EA 959 655 get to Airbag24?

You send the control unit 1EA 959 655 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

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