Airbag control unit with part number MR587416

What is the function of the airbag control unit MR587416?

The airbag control unit MR587416 is the central control module of the passive safety system in the Mitsubishi Colt CZ. It processes signals from crash sensors and determines whether to deploy airbags and seatbelt pretensioners. It ensures the full functionality of the restraint system during a collision.

Technically speaking, this module continuously monitors all connected components, such as airbag modules, seatbelt pretensioners, and sensors. In the event of a collision whose severity exceeds predefined thresholds, the control unit sends the necessary ignition pulses to activate the corresponding safety devices within milliseconds.

This control unit is also known under alternative part numbers, including MR587417, 97RA0104822, 8201A143, 8635A223, and X6T42471. Additionally, compatible Bosch variants exist with part numbers 0 285 001 684/685/689 and 0 285 010 691/692, which can be used in the same vehicle models.

What defects occur in MR587416?

The most common cause of failure for the MR587416 control unit is the storage of crash data after an accident. Other typical defects include internal electronic malfunctions that result in specific error codes, as well as damage caused by moisture ingress (water damage), leading to corrosion.

After a collision, the control unit permanently stores crash data and locks itself to prevent further use. This is a safety feature and the most frequent reason for required repairs. The unit becomes locked even though its hardware may otherwise remain intact.

Internal faults are often found at the hardware level. A well-known example is error code B1402, indicating a ground fault in the driver’s airbag circuit (squib circuit). Such defects arise from aging components or PCB issues and cannot be resolved through software clearing alone.

Water damage causes corrosion on electronic components and circuit traces, potentially leading to short circuits or open circuits that trigger various malfunctions and communication problems.

How do you recognize a defect in the MR587416 control unit?

A defect in the MR587416 control unit primarily manifests as a constantly illuminated or intermittently flashing airbag warning light on the instrument cluster. Additionally, stored error codes often cannot be cleared, or the diagnostic tool fails to establish communication with the control unit.

The airbag warning light is the clearest indicator. It alerts the driver that the restraint system is either non-functional or only partially operational, and may fail to deploy in the event of a crash.

Another clear symptom occurs when the workshop reads out error codes that persist despite attempts to clear them using the diagnostic tool. This suggests a permanent internal hardware fault or stored crash data.

In severe cases, complete communication breakdown may occur. The control unit no longer responds to requests from the diagnostic tool, complicating troubleshooting and typically pointing to a deep-seated defect in the control module.

In which vehicles is MR587416 installed?

The airbag control unit with part number MR587416 is specifically designed for the Mitsubishi Colt vehicle platform. It is found in the Colt CZ model series from 2004 to 2008, as well as in the subsequent facelift model produced from 2008 to 2012.

At Airbag24, we repair part number MR587416 and its variants for the following models:

Mitsubishi Colt CZ (model years 2004–2008)

Mitsubishi Colt CZ Facelift (model years 2008–2012)

A concrete example is the Mitsubishi Colt VI (platform codes Z30, Z3_A, Z2_A) equipped with the 1.1-liter gasoline engine starting from the 2007 model year. Due to the large number of compatible part numbers, it is essential to verify the part number printed directly on the control unit before requesting a repair.

Is repairing MR587416 worthwhile?

Yes, repair is the most cost-effective solution. Compared to a new part that can cost over 800 euros, refurbishment offers savings of 70–80%. Full functionality is restored, vehicle-specific coding remains intact, and you receive 2 years’ statutory liability for defects.

The greatest advantage is the significant cost savings. Customer testimonials confirm savings of 700 to 800 euros compared to purchasing a new unit from an authorized dealer. Repair is a proven and reliable alternative.

Since the original configuration of the control unit is preserved during repair, re-coding or re-learning the vehicle is unnecessary after reinstalling the unit. The device can simply be reinstalled and connected (plug-and-play).

Every repair at Airbag24 is backed by 2 years' statutory liability for defects. This gives you the assurance that, once repaired, the control unit will function reliably and in accordance with the manufacturer’s specifications.

How does the repair of the MR587416 control unit work?

The repair process at Airbag24 is designed for maximum safety and efficiency. After you send us your removed control unit, our technicians perform a thorough analysis, fix the fault at the component level, erase crash data, and confirm full functionality through final tests.

Upon receipt of the control unit at Airbag24, a comprehensive diagnosis is carried out to identify the exact cause of the failure. This includes reading the internal fault memory and inspecting the electronic components.

This is followed by professional repair, which involves erasing stored crash data, reprogramming the memory, and, if necessary, replacing defective components on the circuit board. In this way, the original functionality is restored as if it were a brand-new part.

After repair, each control unit undergoes an extensive functional test to ensure all faults have been resolved and the device communicates flawlessly. You receive 2 years' statutory liability for defects on the completed repair.