Vehicle-Based Wheel Alignment Diagnostic System: Wheel alignment monitoring system incorporated in the vehicle

Wheel alignment is a critical vehicle maintenance parameter influencing safety, handling stability, tire life, and fuel efficiency. Conventional alignment assessment relies on external alignment bays, making the process reactive and dependent on workshop visits. This paper presents an in vehicle wheel alignment monitoring system that enables proactive detection of misalignment through embedded sensor diagnostics. The proposed system evaluates key alignment parameters—Toe, Camber, and Caster—using alignment sensors integrated into the suspension, supported by vehicle level sensors, steering angle sensors, gear position sensors, and yaw rate sensors. The Anti lock Braking System control unit acts as the master ECU, validating predefined operating conditions, executing alignment algorithms, and comparing real time sensor data with stored reference values. Alignment status and corrective recommendations are communicated to the driver via the vehicle command display. The paper describes the system methodology, sensor working principles, data flow, and system architecture, and compares the proposed approach with traditional alignment methods. This enables real time monitoring, preventive maintenance, improved safety, and customer convenience.