Airbag control unit with part number W2T66892

What does the airbag control unit W2T66892 do?

The airbag control unit W2T66892 controls the restraint system (SRS) for Mitsubishi. It evaluates the messages from the crash sensors, determines in an accident within milliseconds which airbags and seatbelt pretensioners trigger, and checks the entire system continuously. It reports faults via the airbag warning light.

During operation a constant self-check runs. Faults found are stored in the fault memory, which a diagnostic tool can read out.

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

Why does the control unit W2T66892 fail?

Crash data stored after an accident is the most common cause of a failure of the W2T66892, even if no airbag was triggered. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump starting.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair.

The other causes arise from ageing, connection problems or voltage spikes in the vehicle electrical system.

How can you tell that the W2T66892 is defective?

With a defect in the W2T66892, the airbag warning light in the instrument cluster lights up permanently or intermittently. Accompanying signs can include an error message in the instrument cluster, no connection between the diagnostic tool and the control unit, and a fault memory that cannot be erased. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

This light is the most important sign of a fault in the system. Have it checked promptly, even if it only appears intermittently.

A fault memory that cannot be emptied is also a reason for a detailed investigation.

Which vehicles is the W2T66892 fitted in?

The control unit W2T66892 is fitted in these vehicles: Mitsubishi Pajero V80 (2007-2012), V80 Facelift (2012-2021), V90 (2007-2012) and V90 Facelift (2012-2021).

The overview below lists the vehicles for this part number:

• Mitsubishi Pajero V80 (2007-2012)
• Mitsubishi Pajero V80 Facelift (2012-2021)
• Mitsubishi Pajero V90 (2007-2012)
• Mitsubishi Pajero V90 Facelift (2012-2021)

Check the part number on the label of the removed unit against this page; this shows whether it is the right unit. Also have the fault memory read out before removal. 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 153000313, 3SR791, 8635A087, 8635A088, 8635A090L, 8635A091.

How does the repair of the W2T66892 work?

First have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit W2T66892 and create a repair order online. Afterwards send the unit well packed.

Airbag24 inspects it on the test bench, repairs defective components, erases the crash data and carries out a function test. Processing usually takes 3–4 working days and applies only to this work.

Afterwards your own 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 W2T66892 get to Airbag24?

You send the control unit W2T66892 as a parcel to Airbag24 or book a UPS collection for an extra charge. After the repair Airbag24 sends the unit back to you by UPS.

Put the printed repair order into the parcel; pack the unit shockproof.