Mercedes Benz W230 SL350 SRS Airbag Control Module 230 820 0985 - Used Original Part

Diagnosis and Common Symptoms

The SRS (Supplemental Restraint System) control module, often referred to as the N2/7 unit in Mercedes-Benz technical literature, acts as the brain of the vehicle's safety network. Failure in the W230 SL-Class is frequently signaled by the persistent "SRS" or "Restraint System Defective" message on the instrument cluster. Common diagnostic fault codes include B1000 (Internal Control Module Hardware Fault) or various communication errors where the Star Diagnosis System (SDS) cannot establish a handshake with the unit. Physical failure often occurs due to voltage spikes during battery jumps or internal capacitor degradation. If your scanner shows a "Control Unit Defective" status that cannot be cleared, the hardware must be replaced.

Introduction

This is a Genuine used SRS Airbag Control Module specifically pulled from a Mercedes Benz W230 SL350. Every unit we stock undergoes a rigorous inspection process to ensure it has not been involved in a deployment event or water damage. By choosing a Genuine used module, you are ensuring that the internal sensors and deployment logic remain consistent with factory safety standards. This part has been bench-tested for communication and is ready for professional installation and vehicle-specific configuration.

Product Details

• Brand: Mercedes Benz
• Model Compatibility: R230 / W230 SL-Class (SL350)
• Part Name: SRS Airbag Control Unit
• Part Number: 230 820 0985 / A2308200985
• Condition: Genuine Used (Tested Working)
• Notes: Requires professional diagnostic equipment for installation and SCN coding.
• Notes: Hardware version and software version must be verified against your original unit for seamless integration.