Airbag control unit with part number 174765

What does the airbag control unit 174765 do?

Within the restraint system of Ferrari (SRS), the airbag control unit 174765 plays the central role. It monitors the crash sensors and, in an accident, decides within milliseconds whether the airbags and seatbelt pretensioners are triggered. It shows faults via the warning light.

The unit works continuously in the background. It checks the connections to the sensors and actuators and stores any faults it detects in the fault memory.

After an accident, it stores crash data and locks itself.

Why does the control unit 174765 fail?

In 174765, the most common cause is crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it. Other causes include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is created when the control unit records an accident, and it remains in the unit even if no airbag fired. Airbag24 removes it as part of the repair.

Aged electronic components, cold solder joints, moisture and corrosion at plug connections are also among the causes. Voltage spikes, for example from a weak battery or when jump-starting, additionally strain the control unit.

How can you tell that the 174765 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, and a fault message relating to the airbag system appears in the instrument cluster. In addition, the fault memory cannot be cleared, and the diagnostic tool cannot connect to the 174765.

These signs point to a fault in the restraint system. In an emergency, the airbags and seatbelt pretensioners may fail to trigger as a result.

If this indicator appears, have the system checked promptly. Ignoring the warning light is not a good idea.

Which vehicles is the 174765 fitted in?

The control unit 174765 is fitted in these vehicles: Ferrari 456 GT F116 (1992-1998) and F116 Facelift (1998-2003). Before removal, check whether your vehicle is in this list.

The list contains the vehicles known to us for this control unit.

• Ferrari 456 GT F116 (1992-1998)
• Ferrari 456 GT F116 Facelift (1998-2003)

Comparing the part number on the label with this page ensures that you have the right unit. Whether the control unit itself is defective, or whether a plug or cable is the cause, can only be determined by reading out the fault memory. Have this done beforehand.

For the same vehicles, we also repair control units with the part numbers 158122, 169711.

How does the repair of the 174765 work?

For the repair of the 174765, first have the fault memory read out and enclose the log. Next, disconnect the battery and remove the control unit. Then create a repair order online and send in the unit, well packed.

This sequence is mandatory because it serves safety. The control unit may only be removed after the battery has been disconnected from the power supply.

At Airbag24, the unit is checked on the test bench, defective components are renewed, the crash data is erased and a function test is carried out. Processing usually takes 3–4 working days, after which the unit is returned 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 174765 get to Airbag24?

You send the control unit 174765 to us as a parcel, or you book a UPS collection for an extra charge. After the repair, UPS takes it back to you.

Print the repair order and enclose it in the parcel. Pack the unit so that it is shock-resistant.