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I have just acquired a 2009 X5 35d e70. The performance of the system is generally satisfactory, with the exception of smoke emissions and a rumbling sound at startup. However, it is anticipated that replacing the Glow controller will aid in the process of identifying and resolving the issue.

The rear brake pad wear sensors were removed by the previous owner, who also eliminated one of the wires connected to the hub on the driver side. I am now endeavouring to determine the appropriate location for connecting the brake pad wear sensor to the hub controller. May I get any guidance or suggestion?

I have been searching for schematics, but, my efforts have been unsuccessful.

Any assistance would be much appreciated.

The near side is connected to the plastic box located behind the strut, where the ABS sensor is also connected. The cabling connecting to the hub does not exhibit any absence of the sensor; rather, it consists of a wire of certain length that extends towards the box.
The offside rear sensor, once again, will be housed behind a plastic enclosure. Its precise location within the X5 is uncertain, although it may be traced by following the ABS wire.

If you were not previously aware, it is important to note that there is only one sensor allocated per axle.

In some geographical regions, it is possible for the rear side of a vehicle to correspond to the driver's side. This configuration is seen when an individual stands behind the automobile, since the right wheel would be positioned on the right-hand side.
Apologies if you were already aware, but I would want to clarify that the statement I made was only a contemplation.

Wearable sensors are often used in many applications, such as automotive systems, to effectively monitor the degradation of components. The electrical connectivity of wear sensors may exhibit variability contingent upon the particular sensor type and its intended use. Nevertheless, I am able to provide a comprehensive outline of the typical electrical connections used for wear sensors.

1. Electrical Connectivity: - Wear sensors often include electrical wiring that establishes a connection between them and the monitoring system or control unit. The aforementioned cables have the potential to either constitute a harness or establish a direct connection with the sensor.

2. Types of connections: - Wear sensors often use specialised connections to provide a dependable and secure electrical connection. Various kinds of connections are often used in the business, such as Deutsch connectors, Molex connectors, and other connectors that adhere to industry standards.

3. Voltage and Current: - The electrical specifications pertaining to wear sensors, including voltage and current prerequisites, exhibit variability. Adhering to the manufacturer's requirements and recommendations is of utmost importance in order to guarantee optimal functionality.

4. Connection to Control Unit: Typically, the wear sensors are linked to a control unit or monitoring system that analyses and analyses the signals sent by the sensors. The control unit in question has the potential to be integrated into the broader control system of a vehicle or equipment.

5. Output of Signals: - Signals are generated by wear sensors in accordance with the degree of wear they detect. The nature of the signal may vary between analogue and digital, depending upon the specific sensor used. The information generated is then interpreted by the control unit.

6. Ground Connection: - Similar to other electrical systems, wear sensors often want a suitable ground connection in order to guarantee precise and dependable signal readings.

7. Installation and Routing: - The correct installation and routing of the sensor wires are crucial in order to mitigate any damage and guarantee long-term functionality. Guidelines pertaining to appropriate installation techniques are often given by manufacturers.

8. Diagnostic Interfaces: - In more sophisticated systems, diagnostic interfaces may include wear sensors, enabling specialists to get further data about the condition of the monitored components.

It is important to always consult the precise documentation given by the sensor manufacturer or the equipment/system maker to get precise and comprehensive information on the electrical connections of wear sensors in the specific application at hand.

There has been a noticeable decrease in the frequency of nonsensical posts as of late.

I would want to express my gratitude to all those present.

I would like to apologise for my oversight in failing to specify that the automobile in question is of North American origin, resulting in the driver's side being situated on the left. I regret the error made.

The wire has been completely removed by the previous owner up to the controller unit. For reasons unbeknownst to me, it is an established reality.

I am inquiring about the methodology for locating a wire diagram and discerning the appropriate port for reestablishing connectivity with the rear wear sensors. Each wheel has one. The missing component is connected inside the controller situated at the rear left. Expressing gratitude is a common social convention that is often used to acknowledge and appreciate the actions or assistance provided by others.

Beneath the arch liner, there exists a box-like component that now accommodates just the ABS speed sensor.
However, inside this designated area, there exists an additional port for the brake sensor connection, where the newly acquired sensor may be inserted.
There are only two ports, often referred to as such, with one port being currently occupied and the other port being unoccupied, thereby indicating that the unoccupied port is the desired one.
It is not possible to insert the plugs incorrectly due to the presence of tabs, which ensure that they can only fit into the appropriate ports.

I express my gratitude to Brown for their contribution.

The issue was successfully identified and resolved. The use of alert is no longer necessary.

I am pleased to hear that you have successfully resolved the issue.