Airbag control unit with part number P6608101985

What does the airbag control unit P6608101985 do?

The airbag control unit P6608101985 takes over control of the restraint system (SRS) in Volvo. It processes the data from the crash sensors, selects airbags and seatbelt pretensioners within milliseconds in the event of an impact, and monitors the system continuously.

It stores detected faults and shows them via the airbag warning light. After an accident it secures crash data and locks itself; the lock is lifted only by the repair.

Why does the control unit P6608101985 fail?

The most common cause with the P6608101985 is crash data that remains in memory after an accident, even if no airbag has deployed; a normal diagnostic tool cannot delete it. Other causes include aged electronics, cold solder joints, wetness and corrosion, and voltage spikes.

The other causes in detail:

• components that have aged over time
• solder joints that have gone cold
• moisture or corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

Whether any of these causes applies is only clarified by reading out the fault memory.

How can you tell that the P6608101985 is defective?

The airbag warning light in the instrument cluster indicates a defect on the P6608101985 when it stays on permanently or only intermittently. In addition there are an error message in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may fail to deploy if the control unit is defective. A warning light that comes on only briefly therefore deserves the same attention as a permanent one.

How the display is to be interpreted in an individual case only becomes clear from the fault memory.

Which vehicles is the P6608101985 fitted in?

The control unit P6608101985 is used in these vehicles: Volvo EX30 Serie 1 (from 2023).

The list shows the vehicles recorded so far for this part number.

• Volvo EX30 Serie 1 (from 2023)

Compare the part number on the unit with this page. That tells you that it is the right control unit, but nothing more. Having the fault memory read out remains the next step, because its content shows whether the control unit is defective or whether a cable or plug is causing the fault.

How does the repair of the P6608101985 work?

First have the fault memory of the P6608101985 read out and attach the log. Then disconnect the battery, remove the control unit, and send in the well-packed unit after creating the repair order online. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench. Defective components are then replaced, crash data is deleted and a functional test is carried out.

The 3–4 working days relate to these tasks only. Afterwards the unit 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 P6608101985 get to Airbag24?

Send the control unit P6608101985 as a parcel, or book a UPS collection for an extra charge. The return after the repair is also made via UPS.

Enclose the printed repair order with the parcel and pack the unit securely to withstand impact.