Airbag control unit with part number 959103B260

What is the function of the airbag control unit 95910-3B260?

The airbag control unit with part number 95910-3B260 (correct spelling: 95910-3B260) is a central control module manufactured by Siemens (reference 5WY66002), specifically installed in the Hyundai Equus LZ/YJ. It monitors and controls the vehicle’s entire occupant restraint system and is responsible for the safe deployment of airbags and seatbelt pretensioners.

As the “brain” of the safety system, this control unit continuously processes data from various acceleration and crash sensors distributed throughout the vehicle. In the event of a collision, the electronics analyze incoming signals within milliseconds and determine which restraint systems need to be activated to provide optimal protection for occupants.

Its primary task is to detect the type and severity of a crash and, based on this assessment, trigger the appropriate airbags (front, side, and curtain airbags) as well as pyrotechnic seatbelt pretensioners. At the same time, it communicates the system status to the vehicle; if a fault occurs, this triggers the activation of the airbag warning light.

Why does the control unit 95910-3B260 fail?

The most common cause of failure for the 95910-3B260 control unit is the permanent storage of crash data after an accident. Other causes include internal electronic malfunctions due to component aging—such as defective chips or capacitors—as well as physical damage caused by water ingress and subsequent corrosion.

Even after a collision, regardless of whether any airbags deployed, the unit writes an irreversible crash record into its internal memory. This safety feature permanently locks the control unit to prevent reuse without professional diagnostics. This condition is often indicated by error code B1620.

In addition, internal hardware failures can occur. Voltage spikes in the vehicle’s electrical system or age-related wear can damage electronic components such as processors, memory chips, or capacitors. Water damage leading to corrosion on circuit boards or connector pins is also a well-known source of failure.

This control unit is compatible with similar variants in the same series. Related or interchangeable part numbers include 95910-3N250, 95910-3B150, 95910-3B160, 95910-3B270, 95910-3B460, 95910-3B470, as well as Delphi or Bosch alternatives like 95910-3N000, 95910-3N010, and 95910-3N200.

How do you recognize a defect in the 95910-3B260?

A malfunction of the 95910-3B260 control unit almost always manifests as a persistently illuminated airbag warning light on the dashboard. Another clear symptom is that the control unit becomes inaccessible to diagnostic tools. Specific error codes such as B1620 (crash data stored) or B1000 (communication error) confirm the fault.

The most obvious sign is the constantly lit airbag indicator light. It fails to turn off after starting the engine, indicating a serious, stored error within the safety system.

Another frequent issue is the lack of communication: workshops are unable to establish a connection between their diagnostic equipment and the airbag control unit, making it impossible to read out error codes or clear faults.

When error codes are read, they are often straightforward. Code B1620 directly points to stored crash data that has locked the unit, while code B1000 indicates an internal or external communication failure within the control unit.

In which vehicles is the 95910-3B260 control unit installed?

The Siemens airbag control unit 95910-3B260 was specifically developed for the Hyundai Equus model line LZ/YJ, also known as the VG generation, produced between 1999 and 2009. To ensure exact compatibility, we recommend verifying via the vehicle identification number (VIN).

At Airbag24, we repair this control unit and compatible variants for the following model:

Hyundai Equus (LZ/YJ / VG series, manufactured from 1999–2009)

How is the 95910-3B260 professionally repaired?

Professional repair at Airbag24 focuses on addressing the root cause of the fault. The process begins with a comprehensive diagnosis, followed by resetting the stored crash data and repairing or replacing defective electronic components on the circuit board. A final functional test ensures the quality of the repair.

After sending the removed control unit to Airbag24, it undergoes a standardized repair procedure. First, an initial inspection is performed, during which the fault memory is read to verify errors such as B1620. Additionally, a visual inspection checks for physical damage, including corrosion or traces of water ingress.

The central step is component-level repair. Our technicians remove the system lock caused by the crash event. If further defects, such as faulty capacitors or memory chips, are identified during analysis, these are carefully desoldered and replaced with new, high-quality components.

Subsequently, the control unit is tested on a specialized test bench to ensure flawless operation of all circuits and error-free communication. We provide a 12-month warranty on every repair.

What shipping options are available?

Airbag24 offers flexible and secure shipping solutions. You can either send your defective control unit to us free of charge or arrange a convenient UPS pickup from a location of your choice. For return shipping, you can choose between free UPS Standard delivery, UPS Express, or both options with cash-on-delivery service.

For outbound shipping, you have two convenient choices: send the package yourself or use our pickup service. Simply book a UPS pickup online, and the package will be collected at your preferred address—whether at home or at your workshop.

After successful repair, return shipping is handled according to your preferences. By default, we ship free of charge via UPS Standard. If you need the part sooner, select UPS Express. Both shipping methods can also be arranged with cash-on-delivery upon request. Alternatively, you may pick up the repaired control unit in person at our facility.