Rear Brake Pad Wear Sensor for BMW X3 G01 G08 and iX3

1. Chassis and OE Coverage

The KU-FV-03-010 is a rear brake pad wear sensor for compatible BMW X3 G01, X3 G08 and iX3 G08 applications. It corresponds to OE number 34356870350 and is designed around the specified rear-brake connector, cable routing and retaining-point arrangement.

• BMW X3 G01
• BMW X3 G08
• BMW iX3 G08
• OE Reference: 34356870350
• Formatted OE: 34 35 6 870 350
• Installation Position: Rear axle

Vehicle compatibility should be confirmed using the OE number, VIN, production date and original sensor configuration before ordering.

2. Rear Brake Wear Monitoring

The sensor forms part of the vehicle’s brake-service monitoring system. When rear brake-pad material wears down to the sensor contact point, the circuit changes state and prompts the vehicle to display a brake-service warning.

• Wear-Limit Detection: Monitors when the brake pad reaches its replacement threshold.
• Instrument Warning: Sends the corresponding wear signal to the vehicle monitoring system.
• Rear-Axle Application: Works with the specified rear brake assembly.
• Service Notification: Helps the driver or workshop identify when rear brake inspection is required.
• Disc Protection Support: Timely pad replacement helps reduce metal-to-metal contact with the brake disc.

3. NBR Cable and Blue Connector

The cable uses a nitrile rubber outer jacket intended for the temperature changes, movement and contamination encountered around the rear wheel and suspension area. A vehicle-specific blue connector supports direct connection to the corresponding wiring interface.

• NBR Cable Jacket: Provides flexibility and resistance to temperature changes.
• Blue Molded Connector: Supports quick identification during workshop installation.
• Sealed Cable Structure: Helps protect the internal conductor from water and dirt.
• Flexible Routing: Allows the wire to follow the original suspension and brake layout.
• Retaining-Point Compatibility: Matches the specified cable clips and routing positions.

4. Workshop Replacement Procedure

The sensor is intended as a direct plug-in service part and should normally be replaced when the wear circuit has been triggered or when new rear brake pads are installed.

• Compare the connector and OE number with the removed sensor.
• Route the cable through the original retaining clips.
• Keep the wire clear of the brake disc, wheel and moving suspension parts.
• Secure the connector before completing the brake service.
• Reset the brake-service indicator according to the vehicle repair procedure.
• Inspect the warning system after installation.

5. Quality and Distribution Value

The vehicle-specific connector, molded cable ends and fixed routing points simplify identification and installation for brake-service workshops. Each sensor is supplied individually for repair, maintenance and aftermarket distribution.

• Cable-flexing inspection
• Connector-fit inspection
• Temperature-cycle testing
• Water-resistance testing
• Corrosion-resistance testing
• OE-based inventory identification