What is an Alfa Romeo Montreal 105 airbag control unit?
An airbag control unit is the central safety unit in modern vehicles, evaluating sensor data in the event of a collision and triggering the airbags and other restraint systems. However, the Alfa Romeo Montreal 105 (built between 1970 and 1977) did not have an airbag control unit installed as standard equipment in this historic model.
The airbag control unit (ECU) is the "brain" of the passive safety system.
It constantly monitors vehicle movement and signals from crash sensors to ensure occupant safety when needed.
An "Alfa Romeo Montreal 105 airbag control unit repair" therefore usually refers to hypothetical retrofits or a misconception about the original equipment.
Why is there no original Alfa Romeo Montreal 105 airbag control unit repair?
An original Alfa Romeo Montreal 105 airbag control unit repair is not possible because this iconic vehicle model was manufactured in the 1970s, long before airbag systems were established as standard safety equipment in vehicles. Therefore, a factory airbag control unit was never installed for the Alfa Romeo Montreal 105.
The lack of standard equipment means that no OEM part numbers or specific diagnostic procedures exist for such a component.
A "repair" would, at best, refer to a subsequently installed (aftermarket) system that may be defective.
Such conversions require specialized knowledge and individual solutions, as there are no standard processes for the historical model and the failure of an OEM part is not the problem.
Common error codes for Alfa Romeo Montreal 105 airbag control unit repair
There are no specific error codes for the Alfa Romeo Montreal 105 airbag control unit repair, as the vehicle was delivered from the factory without an airbag system and therefore does not have an original airbag control unit. All known airbag error codes affect more modern Alfa Romeo models with standard airbags, which allow for in-house diagnosis.
If an "airbag control unit is defective" in a retrofitted system, the error codes would depend on the respective manufacturer of the retrofitted system.
These are not identical to the OEM codes of later Alfa Romeo vehicles.
However, typical error codes of modern systems can serve as a reference, indicating a failure or malfunction in the airbag module, but are not relevant to the Montreal 105.
- B1000 → Communication error → Problems with data transmission in the airbag system.
- B1010 → Internal memory error → Malfunction in the internal data memory of the control unit, often an indication of a defect.
- B1040 → Power supply faulty → Insufficient or unstable power supply to the airbag control unit can lead to failure.
- B1100 → Software error → Error in the control unit software, possibly due to corruption or aging of the component.
What part numbers are available for the Alfa Romeo Montreal 105 airbag control unit repair?
There are no original OEM part numbers for an airbag control unit for the Alfa Romeo Montreal 105, as this model (built between 1970 and 1977) was delivered without airbags as standard. Therefore, searching for a part number for an "Alfa Romeo Montreal 105 airbag control unit repair" will not yield any results in the original spare parts catalog, as the component simply does not exist.
If you are looking for an airbag control unit for a *different*, newer Alfa Romeo model, there are various OEM and supplier part numbers.
However, these are not intended for the Montreal 105 and would not be compatible to replace a broken airbag computer.
The availability of parts for a "repair" of an aftermarket solution is very limited and would require custom manufacturing as it is not an original part.
- 60601752 → Alfa Romeo (OEM) → For models like Alfa Romeo 156/159 (example, not Montreal).
- 0 285 001 234 → Bosch (supplier) → Typical part number for airbag ECUs in various vehicles (example).
- 5WK4 124 → Siemens VDO (supplier) → Other common airbag control unit part numbers (example).
These numbers are for reference only for more modern vehicles and are in no way relevant or compatible with the Alfa Romeo Montreal 105.