Airbag control unit with part number A2959-10100

What is the function of the Airbag Control Unit A2959-10100?

The airbag control unit with part number A2959-10100 is the central control module of the occupant restraint system (SRS) in vehicles such as the Kia K3 BD from model year 2018 onward. It processes signals from crash sensors to precisely and rapidly deploy airbags and seatbelt pretensioners in the event of a collision.

As an original part, also known under reference numbers 95910-A2100 or A2EHKA88110502, it serves as the brain of the entire safety system. It continuously monitors all connected components—from impact sensors to airbag modules—ensuring the system remains fully operational at all times to protect vehicle occupants.

Why does the A2959-10100 control unit fail?

The most common cause of failure for the A2959-10100 control unit is stored crash data following an airbag or seatbelt pretensioner deployment. Other reasons include internal electronic defects in circuit board components, as well as external factors such as water damage or voltage spikes.

After a crash, the control unit locks itself mechanically to prevent unintended re‑deployment. This condition is recorded in the fault memory as “crash data stored” and can only be cleared through professional repair.

Internal hardware defects often involve faulty microchips, capacitors, or damaged solder joints on the circuit board. Such failures may occur suddenly or develop over time due to component aging.

External factors like moisture can lead to corrosion on connectors and pins, while improper jump-starting (reverse polarity) can permanently damage sensitive electronic components inside the control unit. Issues within the vehicle’s CAN bus system may also indicate a defect in the airbag control unit.

How do you recognize a fault in the A2959-10100?

A malfunction of the A2959-10100 control unit primarily manifests as a constantly illuminated or flashing airbag warning light (SRS lamp) in the instrument cluster. Often, communication between the workshop diagnostic tool and the control unit is also lost, preventing error codes from being read.

An active SRS warning light poses a clear safety risk, as airbags might fail to deploy in the event of a crash. A vehicle exhibiting this symptom will not pass its mandatory inspection (TÜV/AU).

Another typical sign is the inability to clear stored fault codes. Workshop testers display messages such as “No communication with control unit” or “Control unit defective.”

Specific, non‑erasable fault codes like B1651 (sensor circuit malfunction), B1415 (incorrect sensor ID), B1481 (high resistance in driver airbag circuit), or B1429 (short circuit) directly point to an internal defect in the control unit.

In which vehicles is the A2959-10100 control unit installed?

The A2959-10100 airbag control unit is mainly used in the Kia K3 BD series starting from model year 2018. Due to the manufacturer’s platform strategy, it can also be found in related models such as the Kia Ceed, Kia Rio UB, and other vehicles within the Hyundai/Kia group.

At Airbag24, we repair part number A2959-10100 as well as compatible variants like 95910-A2100 for the following models:

Kia: K3 (BD, from 2018), Ceed (related models), Rio (UB)

Hyundai: Various related models

How is the A2959-10100 professionally repaired?

Professional repair takes place in a multi‑step process directly on the control unit’s circuit board. Following a detailed initial diagnosis to pinpoint the fault, defective electronic components are replaced, solder joints are reworked, and stored crash data is erased. A final functional test on a dedicated test bench ensures full operability.

Upon sending your unit to Airbag24, the process begins with a thorough diagnosis. The device is visually inspected for corrosion or other damage, and the fault memory is read out. Specialized measurement equipment identifies the exact cause of the fault on the circuit board.

This is followed by component‑level repair. Technicians carefully replace faulty parts such as chips or capacitors and correct any soldering errors. For units locked after a crash, crash data is safely and completely removed from the internal memory.

Finally, the control unit undergoes comprehensive testing on a specialized test bench to verify proper operation of all systems. This quality‑assured process allows us to offer a 12‑month warranty on the completed repair.

What shipping options does Airbag24 offer?

Airbag24 provides flexible and secure shipping solutions. You can send your defective control unit to us free of charge, or arrange convenient UPS pickup at your preferred location. For returns, we offer free standard UPS shipping as well as express options for exceptionally fast delivery.

For the initial shipment, you have the choice: Send the package yourself at no cost to you, or hand it over to a UPS driver who will pick it up directly from your location. Alternatively, you can also drop off the device in person at our facility.

The following options are available for returning your repaired control unit:

- UPS Standard Shipping (free)

- UPS Express Shipping

- UPS Standard Shipping with Cash on Delivery

- UPS Express Shipping with Cash on Delivery

- In-Person Pickup at Our Location