Airbag control unit with part number 4E0 910 655 F

What does the airbag control unit 4E0 910 655 F do?

The airbag control unit 4E0 910 655 F brings the evaluation together in the restraint system (SRS) of Audi. It records the signals from the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and reports faults via the airbag warning light.

Operation is monitored continuously. After an accident the unit stores crash data and locks itself.

Why does the control unit 4E0 910 655 F fail?

The most common cause is crash data after an accident, even without a triggered airbag; a standard diagnostic tool cannot erase it. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example with a weak battery or jump start, also play a role.

The crash data remains stored even if the vehicle then drives without any apparent problems. That it drives without apparent problems therefore does not mean the memory is empty.

Airbag24 determines which cause is present during the test on the test bench; the fault memory provides initial indications beforehand.

How can you tell that the 4E0 910 655 F is defective?

A defect shows up as the airbag warning light, as fault messages in the instrument cluster, as a missing connection to the diagnostic tool and as a fault memory that cannot be cleared.

• The airbag warning light is on continuously or intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool does not establish a connection to the control unit.
• The fault memory cannot be cleared.

The warning light indicates a detected fault, so you should not overlook it. In the event of a defect, airbags and seatbelt pretensioners may possibly not deploy in an emergency.

Which vehicles is the 4E0 910 655 F fitted in?

The 4E0 910 655 F is fitted in these vehicles: Audi S8 D3 (2006-2008) and D3 Facelift (2008-2010); Audi A8 D3 4E (2002-2005) and D3 4E Facelift (2005-2010).

The list contains the vehicles that are assigned to this part number:

• Audi S8 D3 (2006-2008)
• Audi S8 D3 Facelift (2008-2010)
• Audi A8 D3 4E (2002-2005)
• Audi A8 D3 4E Facelift (2005-2010)

Comparing the part number on the label of the removed unit is a check that it is the right unit. It does not establish the cause. For that, have the fault memory read out beforehand, because only this shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0285001672, 0285001705, 285001512, 285001705, 4E0 959 655 H, 4E0910655.

How does the repair of the 4E0 910 655 F work?

First read out the fault memory and attach the log, then disconnect the battery and only then remove the control unit. Then create a repair order online and send the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 tests the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards the own unit returns 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 4E0 910 655 F get to Airbag24?

You send the 4E0 910 655 F as a parcel to us or book a UPS collection for an extra charge. Airbag24 sends it back via UPS after the repair.

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