Mercedes C219 HV Ground Line Battery Clamp Sensor Wiring Loom Cable A2215420418

Mercedes C219 HV Ground Line Battery Clamp Sensor Wiring Loom Cable is a specialized wiring harness designed for operation within the high-voltage circuit, responsible for the precise connection of the sensor to the battery ground clamp. This component from the Cables, wiring harnesses and connectors group ensures stable signal transmission and proper communication with the vehicle's electrical system. Thanks to its original design dedicated to the Mercedes brand, the harness maintains factory wire routing and mounting geometry.

Specifications and technical data

• SKU: rhd-A2215420418
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2215420418
• Substitutable numbers: A2215420418, A 221 542 04 18
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the HV system

The HV battery ground clamp sensor wiring harness in the Mercedes C219 model is responsible for the secure connection of the measuring element to the rest of the electrical system. A properly functioning cable in this area is crucial for:

• stable measurement of high-voltage battery operating parameters,
• correct monitoring of the load and status of the power supply system,
• maintaining proper communication with the vehicle's control modules.

By maintaining the original geometry and wire cross-sections, the harness allows for the restoration of factory operating conditions for the sensor, which translates into predictable behavior of the HV system.

Construction and technical properties

The offered cable belongs to the Cables, wiring harnesses and connectors group, meaning it was designed as an integral part of the vehicle's electrical system. The construction includes:

• dedicated connectors matched to the ground clamp sensor and the vehicle's installation,
• insulation adapted for operation in the HV battery compartment,
• factory wire routing to minimize the risk of abrasion and interference.

This type of harness is designed to reduce voltage drops and signal interference, which is important for measurement accuracy and the stability of the systems monitoring the battery.

Benefits of using an original Mercedes harness

Using the original HV battery ground clamp sensor harness in a Mercedes C219 allows for consistency with the factory installation design. This provides a number of practical benefits:

• Precise fit – the cable length, shape, and connector placement correspond to the solutions used in the vehicle, which facilitates installation and eliminates the need for modifications.
• Consistency with vehicle electronics – the original harness is designed for specific sensor and control module operating parameters, reducing the risk of diagnostic errors.
• Safe operation in the HV circuit – properly selected insulation materials and wire cross-sections support the stability of the high-voltage system.

Condition, installation, and service application

The item is offered as a used part, which allows for an economical repair of the system while maintaining the manufacturer's original specifications. The harness is particularly suitable in situations where:

• mechanical damage to the cable or connectors has occurred in the vicinity of the HV battery,
• errors related to reading battery ground parameters appear in the installation,
• it is necessary to replace a section of the factory harness without interfering with the rest of the system.

Thanks to the factory-standard design, installation is limited to restoring the original wire routing and correctly fastening the connectors, which reduces service time and facilitates quality control of the work performed.

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other elements from the same group, such as signal cables, power harnesses, or service connectors, check the available parts in the Mercedes Cables, wiring harnesses and connectors category.

For additional support in selecting installation elements and assessing the condition of used vehicle system components, it is worth checking out the guide: Second-hand braking system: how to safely choose discs, calipers, and ABS?, which shows a practical approach to verifying parts from the secondary market.