Mercedes W204 Front Seat Air Module Wiring Cable Front Right A2045408735

The Mercedes W204 Front Right Airbag Wiring Harness is a specialized component from the Cables, Harnesses, and Connectors group, designed to service the passenger-side safety system. A correctly selected harness ensures proper connection of the airbag module to the vehicle's electrical system, which is crucial for the correct operation of the SRS system.

Specifications and technical data

• SKU: A2045408735
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2045408735
• Substitutable numbers: A2045408735, A 204 540 87 35
• Location on the vehicle: Front, Right
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Vehicle Placement

The presented harness is dedicated for installation in the front right side of the vehicle, in the passenger airbag area. It is responsible for a stable electrical connection of the airbag to the rest of the installation, enabling proper communication with sensors and the safety system controller.

Placement in the front-right area requires precise wire routing and correct connector positioning to avoid stress, abrasion, or signal interference. The harness's design is prepared for operation in this specific body zone, considering the typical wiring routes in Mercedes W204 models.

Construction and Technical Function

The harness belongs to the group of components responsible for signal transmission in passive safety systems. It includes wires and connectors adapted for use with the airbag system, ensuring:

• stable electrical connection between the airbag and the vehicle's installation,
• proper circuit continuity required by the SRS controller,
• the possibility of correct diagnosis of airbag circuit-related errors,
• reduction of signal interference risk during operation.

Thanks to its adaptation to the specific mounting area, the harness allows for organized wire routing, which facilitates servicing and reduces the risk of mechanical damage during the removal of other interior components.

Benefits of Using an Original Mercedes Harness

Using a harness dedicated to the airbag system in a Mercedes W204 offers a range of practical benefits:

• Proper Compatibility with the Installation – connectors and wire lengths are adapted to the factory electrical system, facilitating installation.
• Consistency with the Safety System – the harness works with the factory SRS controller, supporting the correct operation of the passenger-side airbag.
• Simplified Diagnostics – a correctly selected component minimizes the risk of errors related to installation incompatibility, which is important when clearing airbag warning lights.

The product comes from the Cables, Harnesses, and Connectors group, meaning it has been designed for operation within the vehicle's electrical installation environment, considering signal transmission requirements and resistance to typical operational loads.

Condition and Service Application

The offered harness is a used part, making it an attractive solution for post-accident repairs or airbag system servicing when replacing a damaged section of the wiring is necessary. This type of component is particularly useful in situations where the passenger airbag has deployed or the dashboard has been tampered with, and there is suspicion of damage to wires or connectors.

Before installation, standard verification of circuit continuity and inspection of connectors for mechanical damage is recommended, allowing for the safe restoration of the vehicle's SRS system full functionality.

Assistance with Selection and Additional Information

For components related to the safety system, correct matching of the component to the specific vehicle version is particularly important. It is worth paying attention to manufacturer markings, part numbers, and vehicle placement to avoid problems with installation and diagnostics.

If you are planning a comprehensive repair or upgrade of the electrical installation area responsible for safety systems in your Mercedes and need other parts from the same group, such as signal wires, control module harnesses, or SRS system connectors, check the available parts in the Mercedes Cables, Harnesses, and Connectors category.

Additionally, if you are interested in a broader context of operating and repairing electrical components in a car, you will find practical tips in the article When is it Worth Replacing an Alternator with a Used One: A Practical Guide for Drivers, which discusses the approach to selecting used components in vehicle electrical systems.