What is a Land Rover Discovery 2 airbag control unit?
The Land Rover Discovery 2 airbag control unit is the central safety unit that precisely activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of a collision. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of the entire passive safety system for optimal protection of vehicle occupants.
This complex module acts as the brain of the airbag system. It processes data from various crash sensors in the vehicle.
The main task is to coordinate the quick and reliable deployment of the airbags in an emergency.
Why is the Land Rover Discovery 2 airbag control unit defective?
A Land Rover Discovery 2 airbag control unit often fails due to internal component failure, communication errors, or crash data blocking the system after an accident. These failures prevent the airbag system from functioning properly and require a specialized Land Rover Discovery 2 airbag control unit repair.
Internal memory errors or problems with the control unit's software are common causes of failure.
Communication problems with other vehicle systems or the airbag components can also impair function.
After an accident, these control units store crash data, which prevents them from functioning again until they are professionally deleted.
Short circuits or broken cables in the vehicle wiring can also indirectly lead to problems in the airbag control unit.
Common error codes for Land Rover Discovery 2 airbag control unit repair
When repairing the Land Rover Discovery 2 airbag control unit, specific error codes indicate problems directly related to the control unit. These include communication problems, internal memory errors, or software errors, making professional diagnosis and repair essential to restore vehicle safety.
- B1000 → Control unit communication error → Malfunction in the communication of the airbag control unit itself.
- B0029 → Airbag communication channel 13 error → Open circuit or short circuit in a specific communication channel.
- B0100 → Airbag ECU internal memory error → A problem with the control unit's internal memory.
- B0200 → Internal software error in the control unit → A software error within the airbag control unit.
These error codes often require special diagnostic devices that communicate via the 4-pin airbag diagnostic port.
Recurring errors after deletion usually indicate a physical problem in the control unit or wiring.
Crash data storage after an accident must be professionally erased before a Land Rover Discovery 2 airbag control unit repair can be successful.
What part numbers are available for the Land Rover Discovery 2 airbag control unit repair?
For a successful Land Rover Discovery 2 airbag control unit repair, only verified OEM part numbers that are precisely matched to the 1998 to 2004 model must be used. These numbers ensure the compatibility and correct function of the airbag system, whether from Bosch or Continental.
Common OEM part numbers for the Land Rover Discovery 2 airbag control unit include:
- FK72-14D374-AF (Bosch OEM)
- FK72-14D374-AH (Bosch OEM)
- MK72-14D374-AD (Bosch OEM, Renesas Chip)
- MK72-14D374-AE (Bosch OEM, Renesas Chip)
- AH22-14D374-AG (Continental OEM)
- NNW502432 (Continental OEM)
- NNW502436 (Continental OEM)
These part numbers are specific to the airbag control units and not to sensors or airbag modules.
The prefix “14D374” confirms compatibility with the Land Rover Discovery 2.
A correct Land Rover Discovery 2 airbag control unit repair is based on the use of these tested OEM parts to avoid malfunctions.