What is a Nissan Leaf ZE0 airbag control unit?
The Nissan Leaf ZE0 airbag control unit is the central safety unit in your electric vehicle, specifically activating all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of the entire airbag system for maximum occupant safety.
This module acts as a diagnostic and control center for the entire SRS system by continuously monitoring data from all connected airbag sensors and control lines.
It processes critical signals from various crash sensors, such as front and side impact sensors, and triggers the airbags precisely and in a time-controlled manner in the event of a relevant impact.
The module is programmed specifically for each vehicle and contains individual vehicle identification information (VIN coding), which ensures exact compatibility and full functionality after installation.
Why is the Nissan Leaf ZE0 airbag control unit defective?
The Nissan Leaf ZE0 airbag control unit can fail for a variety of reasons, often after an accident, as it stores crash data and then needs to be replaced or reset. Internal electronic errors, power surges, or age-related component failure can also cause failure, causing the airbag warning light to illuminate.
A common reason for a defect in the airbag control unit is the storage of crash data after an accident, which requires reprogramming or replacement of the module.
Internal electronic problems, communication errors in the vehicle bus system, or even damage caused by water ingress can also lead to control unit failure.
The airbag warning light on the dashboard usually signals a fault in the SRS system, which may indicate a problem with the control unit or its associated components.
Common error codes for Nissan Leaf ZE0 airbag control unit repair
When repairing the Nissan Leaf ZE0 airbag control unit, specific error codes indicate problems with the module itself, rather than with sensors or other components. These codes, such as B00A0 or B1000, are read by the vehicle's diagnostics and often indicate internal defects or communication problems that require repair or replacement of the control unit.
- B00A0 → Internal control unit error / communication problem → Airbag ECU defect or data transmission failure.
- B1000 → ECU communication error → Interruption or failure of communication between ECU and vehicle systems.
- B1059 → Control Unit Defect → A clear indication of a hardware defect or malfunction within the airbag ECU.
These trouble codes are specific to the Nissan Leaf ZE0 airbag control unit (SRS ECU) and require accurate diagnosis.
Resetting the error memory can temporarily turn off the warning light, but does not correct any hardware defects in the control unit.
To permanently resolve these codes, a professional repair or replacement of the airbag control unit in a specialized workshop is often necessary.
What part numbers are available for the Nissan Leaf ZE0 airbag control unit repair?
Knowing the exact OEM part number is crucial for a successful Nissan Leaf ZE0 airbag control unit repair, as compatibility is only guaranteed through matching. The correct numbers identify the specific module for your vehicle model and year, ensuring the replacement part functions correctly and full safety.
The following OEM part numbers are confirmed as genuine parts for the Nissan Leaf ZE0 Airbag Control Unit (SRS Airbag Computer Control Module):
- 98820-3NF0A → Manufacturer: Nissan / Autoliv → Type: OEM original, listed as SRS airbag module.
- 98820-5SA0E → Manufacturer: Nissan / Autoliv → Type: OEM original, with clear compatibility to the Leaf ZE0.
- K8820-3NA0A → Manufacturer: Nissan → Type: OEM original, for earlier models, partially replaced by K8820-3NA1A.
These part numbers are compatible with the first generation Nissan Leaf ZE0 (model years approx. 2011-2017), the typical airbag control units of this series.
Before installation, make sure that the part number of the original module matches the replacement number.
After a module replacement, programming of the new control unit to the vehicle's VIN by a Nissan workshop or specialized service provider is usually required to activate the system and clear the airbag warning light.