Hyundai H-1 A1 airbag control unit repair

What is a Hyundai H-1 A1 airbag control unit?

The Hyundai H-1 A1 airbag control unit is the central safety unit in the vehicle, precisely controlling and deploying all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores crash data, and ensures flawless operation for maximum passenger safety.

This electronic control unit, also called SRSCM, is designed for Hyundai H-1 A1 (Starex) models built between 1997 and 2007, especially the 2.5 TD.

It ensures the rapid detection of critical events and communicates with other important vehicle systems such as ABS and ESP.

Why is the Hyundai H-1 A1 airbag control unit defective?

A Hyundai H-1 A1 airbag control unit often fails due to internal electronic components failing, communication errors occurring, or the battery voltage being too low. This causes the airbag warning light to stay permanently lit, and the system can no longer provide its protective function.

Typical causes of failure include age-related material fatigue, voltage fluctuations in the vehicle electrical system or moisture ingress, which can affect the sensitive electronics.

Repair is often possible and more economical than replacement, especially if internal memory data or error entries need to be deleted to correct the error.

Common error codes for Hyundai H-1 A1 airbag control unit repair

During Hyundai H-1 A1 airbag control unit repair, diagnostics identify specific error codes that directly indicate ECU malfunctions. These codes allow for precise localization of the defect, which is essential for targeted troubleshooting and restoring vehicle safety.

• B1000 → Control unit communication error → Communication between control unit and vehicle network is disrupted.
• B2501 → Airbag lamp open circuit → Airbag warning lamp lights up continuously due to a wire break.
• B1620 → SRSCM internal error → There is a continuous defect within the control unit electronics.
• B1112 → Low battery voltage → Too low battery voltage leads to sporadic malfunctions of the control unit.

What part numbers are available for the Hyundai H-1 A1 airbag control unit repair?

Specific OEM part numbers exist for Hyundai H-1 A1 airbag control unit repairs, ensuring compatibility with the 2.5 TD models (1997-2007). Finding the correct part number is essential for selecting the appropriate module for replacement or repair and ensuring vehicle safety.

Verified Hyundai original part numbers include 95910-4A300, 95910-4A301, and 95900-4A500, all of which fit this model series.

Part number 95910-4H700SA is also used in the context of repair or reset for these airbag control units.

These part numbers are directly related to the airbag control unit of the Hyundai H-1 A1 (Starex) and have been confirmed as OEM compatible several times.