BMW E60 M5 E63 E64 LCI Brake Pad Wear Sensor Rear 6789493

BMW E60 M5 E63 E64 LCI Brake Pad Wear Sensor Rear is an original BMW braking system component designed to monitor the wear level of brake pads on the rear axle. Precise wear readings ensure safe vehicle operation and scheduled pad replacement, without the risk of damaging brake discs or reducing braking efficiency.

Specifications and technical data

• SKU: 6789493
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6789493
• Substitutable numbers: 34356759918, 6759918, 34356768596, 6768596, 34356764299, 6764299, 34356776422, 6776422, 34356789493, 6789493
• Location on the vehicle: Rear
• Category: Additional Brake Sensors & Switches

Purpose and function of the sensor

The presented brake pad wear sensor is dedicated to the rear axle of BMW E60 M5 and E63/E64 LCI (facelift) models. Its task is to continuously monitor the condition of the friction linings and transmit information to the onboard system, allowing the driver to react promptly when the wear limit is reached.

Its placement on the rear axle ensures monitoring of pads that, in many configurations, operate under high loads, especially in high-performance vehicles like the M5. A functional sensor minimizes the risk of driving with excessively worn pads, which translates into braking stability and safety in everyday use.

Benefits of using an original BMW sensor

Using an original sensor instead of a worn or damaged component ensures:

• Proper compatibility with the vehicle's factory diagnostic system (brake pad wear warning lights on the dashboard).
• A stable electrical signal, reducing false wear warnings.
• Correct cable length and connector fitment for the BMW E60 M5 and E63/E64 LCI electrical system.
• Hassle-free installation in the original mounting points on the rear axle.

As a result, the sensor serves as a functional addition to the braking system, allowing you to maintain safety parameters at the level intended by the manufacturer.

Technical specifications and installation

The sensor belongs to the group of components referred to as Other brake sensors and switches, responsible for overseeing the operation of the braking system. The design is intended for installation on the rear axle, in the immediate vicinity of the brake pads, using factory brackets and cable guides.

During installation, it is recommended to:

• check the condition of the brake pads and discs,
• properly route the cable in the original guides,
• securely plug the connector into the vehicle's wiring harness,
• reset any wear-related errors and service inspections in the onboard system after replacement.

This approach restores full functionality to the brake pad wear monitoring system and avoids incorrect messages on the instrument cluster.

Condition of the component and practical application

The offered sensor is a used part, which in practice means an attractive cost-to-functionality ratio while maintaining original BMW specifications. This solution is particularly beneficial when servicing vehicles that are used intensively, where both safety and maintenance cost optimization are important.

Choosing a used, original sensor allows you to maintain consistency with the factory installation while reducing expenses compared to purchasing a new part. This is especially relevant for M5 models and the E6x series, where the braking system operates under high loads and requires regular maintenance.

More solutions and technical knowledge

If you are planning a comprehensive repair or upgrade of the braking area in your BMW and need other components from the same group, such as additional sensors, switches, or system monitoring elements, check out the available parts in the Other BMW brake sensors and switches category.

To better understand the advantages of using pre-owned electronic components in a car, including brake system sensors, it is worth reading the Global Parts guide: Used automotive electronics on board – why is it worth choosing pre-owned ECU modules and sensors?. You will find practical tips there regarding selection by OEM numbers, compatibility issues, and installation in workshop conditions.