Crash Impact Sensor Mercedes C118 W177 W247 Front Acceleration Unit A1679052401

Visual condition of the part

The product shows signs of use visible in the photos.

Crash Impact Sensor Mercedes C118 W177 W247 Front Acceleration Unit is a component from the Electronic control modules and controllers group, responsible for precise collision detection in the front part of the vehicle. Mounted in the front collision zone, it works with passive safety systems, ensuring rapid signal transmission to the airbag control unit. This solution allows for maintaining the factory logic of the passenger protection system in modern Mercedes models.

Specifications and technical data

• SKU: A1679052401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1679052401
• Substitutable numbers: A1679052401, A 167 905 24 01
• Location on the vehicle: Front
• Category: ECUs & Computer Modules

Function and role of the front impact sensor

The front impact sensor in Mercedes C118, W177, and W247 series vehicles is responsible for rapid detection of deceleration in the frontal zone. Upon detecting the appropriate negative acceleration threshold, it sends a signal to the central control unit, which decides on the activation of airbags and seat belt tensioners. A properly functioning sensor is crucial for maintaining the safety system activation sequence designed by the manufacturer.

Placement in the front area of the vehicle allows for the earliest possible collision recognition, which shortens the reaction time of the entire system. Thanks to this, the system can better adjust the intensity of operation to the nature of the collision, which translates into more predictable protection for the driver and passengers.

Integration with Mercedes electronics and the controller group

The presented sensor belongs to the Electronic control modules and controllers group, which means it works with other elements of the vehicle network via communication buses provided by the manufacturer. It is designed to operate in a specific software and hardware environment, therefore its application in the appropriate C118, W177, and W247 body models allows for maintaining the consistency of the entire system.

In practice, this means:

• maintaining the factory characteristics of the safety system,
• proper cooperation with the central airbag control unit,
• appropriate matching of measurement parameters to the geometry of the front bodywork.

Thanks to this, the installation of such a component allows for maintaining the original electronic architecture of the vehicle, without the need for software interference beyond standard service procedures.

Vehicle placement and installation aspects

The sensor is intended for installation in the front body section, in an area structurally provided by the manufacturer. Proper positioning is important for the accuracy of deceleration readings, therefore during installation, the orientation and mounting point must be maintained in accordance with service documentation.

When replacing, it is worth paying attention to:

• stable mounting to the body support element,
• absence of mechanical stress on the sensor housing,
• proper connection of the electrical connector without pin damage.

Such an approach minimizes the risk of system errors and ensures repeatability of measurements under road conditions.

Product characteristics and application

The offered element is intended for Mercedes vehicles that use a safety architecture based on dedicated impact sensors in the front zone. By maintaining compliance with the factory design concept, the sensor allows for the restoration of full system functionality after accident repairs or the replacement of damaged components.

The product comes from the segment of used components, which allows for the economical restoration of the original vehicle configuration while maintaining consistency with the factory design. This solution is particularly beneficial for repairs where matching the existing installation and system logic is essential.

Mercedes electronic control modules and controllers – expansion and service

If you are planning a comprehensive repair or upgrade of the safety and comfort systems area in your Mercedes and need other elements from the same group, such as airbag controllers, comfort modules, or driver assistance control units, check the available parts in the Mercedes electronic control modules and controllers category.

Substantive support and selection of used parts

When selecting used electronic components, such as impact sensors or controllers, it is worth using the experience gathered with other premium brands. A good point of reference can be an analysis of how original components allow for maintaining the character of the vehicle and its factory properties. You can find more on this topic in the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which shows how properly selected electronic modules influence the maintenance of system consistency in premium class cars.