PowerStop SW-0903 Disc Brake Pad Wear Sensor - Front

Front Brake Wear Sensor for Lexus LS400

PowerStop SW-0903 is a front Euro-Stop electronic brake pad wear sensor built for 1995-2000 Lexus LS400 applications. It is made to match OEM form, fit, and function so the brake warning system can continue to monitor pad wear accurately after service.

For Lexus LS400 front brake maintenance, replacing the worn sensor at the same time as pads and rotors helps restore proper wear-indicator operation. The SW-0903 is built for high-temperature durability and stable electrode conductivity, supporting consistent performance over long service intervals.

Key Features

• Front disc brake pad wear sensor for Lexus LS400
• OE-style electronic sensor designed to match original fit and function
• Built for high-temperature resistance and conductivity stability
• Gray female connector with square connector shape
• 2-wire harness with blade terminals and one grommet included
• Wiring harness length: 10.62 in. / 270 mm
• Cross-reference part numbers include Beck/Arnley 084-1723 and Raybestos Brakes EWS109

Detailed Description

PowerStop SW-0903 is a Front Euro-Stop Electronic Brake Wear Sensor for the Lexus LS400. This sensor is intended for vehicles equipped with a front brake pad wear monitoring system and is engineered to meet or exceed OEM requirements for form, fit, and function. The part number SW-0903 is a direct-fit style replacement for front brake service on 1995-2000 Lexus LS400 models.

PowerStop’s Euro-Stop brake wear sensor line focuses on restoring the original warning-system behavior after brake pad replacement. For Lexus LS400 front brake jobs, SW-0903 helps maintain the vehicle’s electronic wear indication so the driver receives the same type of pad-wear feedback expected from the factory system.

What It Helps Address

• Brake wear warning light staying on after pad service
• Damaged or brittle original front wear sensor wiring
• Loss of brake pad wear monitoring on Lexus LS400 front brakes
• Incorrect sensor fitment during brake maintenance
• Intermittent wear-indicator signal caused by aged sensor components

Installation Notes and Tips

Fits 1995-2000 Lexus LS400, front. Replace the wear sensor when servicing front brake pads and inspect the connector, grommet, and harness routing before installation. Confirm the sensor follows the original routing path and seats fully in the brake pad and connector locations to avoid signal issues.

For Lexus LS400 front brake service, compare the original connector style and harness layout to the SW-0903 before installation. This part number is also referenced as an OE-style replacement under Beck/Arnley 084-1723 and Raybestos Brakes EWS109 for the same application.

Quality Assurance

PowerStop states that its Euro-Stop brake wear sensors are built to meet or exceed OEM requirements and are designed to withstand extreme temperatures for reliable conductivity. SW-0903 is engineered for long-term operation in front brake applications on the Lexus LS400.