What is a Volvo S90 Series 2 airbag control unit?
The Volvo S90 Series 2 airbag control unit is the central safety unit that instantly activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, processes their data in real time, and stores important crash information to ensure the proper functioning of all airbag modules in the vehicle.
As a central electronic control module, it operates according to the EVA principle: input, processing, and output. It continuously receives signals from crash sensors, seat occupancy detection, and seat belt buckle contacts.
If defined thresholds are exceeded, the system deploys the relevant airbags to optimize occupant protection. The extremely fast response time is just a few milliseconds after detecting an accident.
Communication with other vehicle systems, such as the on-board computer, takes place seamlessly via the CAN bus or other internal networks of the vehicle.
Why is the Volvo S90 Series 2 airbag control unit defective?
A Volvo S90 Series 2 airbag control unit can fail due to internal software or hardware errors, such as a configuration error or communication problems in the vehicle's network. It is also often broken after an accident because crash data is recorded. These failures require specialized diagnostics for a successful Volvo S90 Series 2 airbag control unit repair.
Common causes include damage caused by external influences or age-related material fatigue of the electronics. An internal fault, such as a defective circuit board, can impair the correct functioning of the control unit.
Incorrect internal configurations are also a common cause of failure. Communication problems in the CAN bus can also cause the control unit to stop receiving or sending data.
Such defects require a professional Volvo S90 Series 2 airbag control unit repair to restore full functionality and thus vehicle safety.
Common error codes for Volvo S90 Series 2 airbag control unit repair
During a Volvo S90 Series 2 airbag control unit repair, specific error codes occur that directly indicate problems with the control unit itself. These codes, such as SRS-00D0 and SRS-00D5, indicate internal configuration or communication errors within the module, not sensor or module defects. A precise diagnosis is crucial for troubleshooting.
- SRS-00D0 → SRS control unit incorrect configuration → Error in the internal software or hardware configuration of the airbag control unit.
- SRS-00D5 → Communication error with the SRS control unit → Malfunction in the data transmission between the airbag control unit and other vehicle systems, usually in the CAN bus.
What part numbers are available for the Volvo S90 Series 2 airbag control unit repair?
There are specific OEM part numbers for the Volvo S90 Series 2 airbag control unit repair, which can vary depending on the model year. These numbers are crucial for ordering the correct spare part or repair. Currently, the OEM part numbers 32433593 and 31681532 are known to be verified and compatible with the model.
Part number 32433593 is listed as the Airbag Control Unit (SRS) for the 2021 Volvo S90 (Series 2) and is officially verified by Volvo. It is used in various variants of the second-generation S90.
Part number 31681532 is known to be the OEM airbag control module specifically for the 2017 S90/V90 (Series 2) and is confirmed by multiple sources. It is important to match the vehicle's year of manufacture with the part number to ensure compatibility.
Supplier part numbers from manufacturers such as Bosch, Continental, or Autoliv are not publicly identified or documented for this specific Volvo S90 Series 2 airbag control unit. The focus here is on the original Volvo OEM numbers.