What is a Subaru Dias Wagon S321N airbag control unit?
The Subaru Dias Wagon S321N airbag control unit is the central safety unit that activates and monitors all occupant restraint systems in the event of an accident. It receives signals from impact sensors, stores relevant crash data, and ensures targeted airbag deployment for comprehensive occupant protection in an emergency.
The control unit is a central electronic component of the Supplemental Restraint System (SRS). It serves as the control center for the vehicle's airbag system.
It continuously monitors air pressure and acceleration sensors, as well as other safety features. In the event of an impact, it controls the targeted and rapid deployment of the airbags.
Why is the Subaru Dias Wagon S321N airbag control unit defective?
The Subaru Dias Wagon S321N airbag control unit often fails due to internal hardware problems, moisture damage, or faulty coding after a module replacement. This leads to safety system failure and requires professional Subaru Dias Wagon S321N airbag control unit repair.
Internal errors such as hardware or software malfunctions can render the control unit unusable. Moisture or power supply problems are also common causes of failure.
Incorrect programming or configuration after replacing the module is another reason for its malfunction. This requires precise diagnosis and reprogramming in the workshop.
Loss of communication via the CAN bus can also indicate a faulty control unit. This impedes communication with other vehicle control units.
Common error codes for Subaru Dias Wagon S321N airbag control unit repair
When diagnosing the Subaru Dias Wagon S321N airbag control unit repair, certain error codes directly indicate defects in the module. These codes allow for precise localization of the problem and are crucial for a successful repair of the safety system.
- B1650 → SRS (Airbag) control unit error → Internal control unit malfunction (hardware, software, moisture, power supply).
- B1655 → Airbag control unit (ACM) coding error → Incorrect programming/configuration after module replacement.
- U0151 → Loss of communication with SRS control unit → CAN bus communication problem, faulty control unit or line fault.
What part numbers are available for the Subaru Dias Wagon S321N airbag control unit repair?
For Subaru Dias Wagon S321N airbag control unit repairs, specific OEM part numbers are crucial to ensure compatibility and functionality. The correct part number ensures that the replacement part fits the S321N vehicle model exactly and that the safety system functions optimally.
The verified OEM part numbers for the Subaru Dias Wagon S321N airbag control unit are:
- 98221SA010 (Subaru original, including according to the Subaru parts catalog)
- 98221-SB070 (Subaru Original, listed in the official spare parts catalog)
- 98221SA070 (Subaru Original, known from the TecDoc/TecAlliance database)
- 98221-SB010 (Subaru Original, often found in Bosch parts catalogs)
- 98221-SD000 (Continental replacement/alternative, documented as a functional replacement)
These numbers are specifically tailored for the S321N model and include both original parts and proven alternatives. A precise verification of the part number is essential for any Subaru Dias Wagon S321N airbag control unit repair.