Airbag control unit with part number W2T64974

What does the airbag control unit W2T64974 do?

The airbag control unit W2T64974 coordinates the restraint system (SRS) in Mitsubishi. It evaluates the crash sensors, determines in a crash within fractions of a second which airbags and seatbelt pretensioners to trigger, and monitors the entire system.

During operation it reports faults via the airbag warning light. After an accident it secures crash data and then remains locked.

Why does the control unit W2T64974 fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed; a standard diagnostic tool does not erase it. Aged components, cold solder joints, moisture and corrosion, as well as voltage spikes, are also possible causes.

The crash data remain in memory even after the vehicle is driven again. A diagnostic tool used in the usual way does not change this.

In addition, ageing and moisture gradually affect the electronics. Solder joints lose contact, moisture attacks plug connections. Voltage spikes, for example from a weak battery or when starting with an external power source, can cause further damage.

How can you tell that the W2T64974 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears, the diagnostic tool cannot reach the control unit, or the fault memory remains. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

This warning light is the signal the vehicle gives on its own. It responds to faults detected in the restraint system and should therefore be checked by a workshop.

Which vehicles is the W2T64974 fitted in?

In Mitsubishi, the control unit W2T64974 is fitted in these vehicles: Mitsubishi L200 KA (2006-2016) and KB (2006-2016).

The models to which the number applies:

• Mitsubishi L200 KA (2006-2016)
• Mitsubishi L200 KB (2006-2016)

Comparing the part number on the removed unit with this page shows whether you have the right unit. However, it does not clarify why it has failed. Therefore have the fault memory read out beforehand, as only this finding shows whether the control unit itself is affected or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 8635A149, 8635A231, MR587974, VA2335576.

How does the repair of the W2T64974 work?

First have the fault memory read out and enclose the log. In the next step disconnect the battery and only then remove the control unit. Then create the repair order online and send the unit well packed.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the stored crash data and carries out a final function test. The processing time is usually 3–4 working days.

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 W2T64974 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. The return after repair is made by UPS.

The parcel must include the repair order and log, and the packaging must protect the unit against impacts.