Mercedes C117 Crash Sensor Pedestrian Protection A1179050902

The Mercedes C117 Pedestrian Protection Impact Sensor is a specialized component of the active safety system, responsible for detecting collisions in the front body area and initiating pedestrian protection. As an original Mercedes component, it ensures proper integration with the vehicle's factory electronics and correct system response. A used OEM part allows for a technically sound repair without altering the safety system's structure.

Specifications and technical data

• SKU: a1179050902
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: a1179050902
• Substitutable numbers: a1179050902, a 117 905 09 02
• Category: Parking Sensors

Function and Application of the Pedestrian Protection Sensor

The Mercedes C117 Pedestrian Protection Impact Sensor operates within an integrated safety system, monitoring loads in the impact zone and transmitting signals to the controllers responsible for pedestrian protection. A correctly functioning sensor enables the proper activation of actuators in the event of a collision, which is crucial for both safety and vehicle compliance with homologation requirements.

This component is designed for Mercedes vehicles from the C117 family equipped with the factory pedestrian protection system. Installing the correct sensor is key to the proper operation of the entire system – an incorrectly chosen component can lead to diagnostic errors, improper system function, or complete system shutdown.

Benefits of Using an Original Mercedes Sensor

Choosing an original impact sensor from the Parking Sensors group for your Mercedes ensures:

• factory-matched fit for the electrical system and body structure,
• correct cooperation with the safety control unit software,
• preservation of system response parameters consistent with the manufacturer's design,
• proper diagnostics using service testers.

This allows you to restore the full functionality of the pedestrian protection system without the need for modifications to wiring harnesses, connectors, or mounting points. It is a technically consistent solution with the vehicle's factory configuration.

Characteristics of a Used Component

The offered sensor comes from the Parking Sensors category and is a used component, allowing for a combination of original quality and a more favorable repair cost. Such electronic components, when functionally sound, retain their usability and can be safely used as a replacement for a damaged module.

Before installation, the standard service procedure is recommended: checking the wiring, verifying control unit errors, and – if the specific model requires it – adapting or resetting parameters in the diagnostic system. This ensures that the sensor correctly interacts with other system components.

Selection by OEM Numbers and Compatibility

This sensor has a dedicated OEM part number and associated interchangeable numbers, facilitating precise identification and selection for a specific vehicle version. When purchasing, it is advisable to compare the markings with the currently installed part or consult the manufacturer's catalog to avoid issues with hardware and software compatibility.

If you want to better understand how to safely choose used modules and sensors, how to interpret OEM markings, and what to look for when installing electronics, the guide: Used Car Electronics – Second-Hand ECUs and Sensors will be helpful. You will find practical tips on selection, diagnostics, and operation of such components there.

System Expansion within the Same Group

If you are planning a comprehensive repair or upgrade of the front area of your Mercedes and need other parts from the same group, such as additional sensors, control modules, or maneuvering assistance elements, check the available parts in the Mercedes Parking Sensors category.