Start by safely lifting your car and removing the wheel. Locate the strut assembly, then detach it from the steering knuckle and strut mount. Use a spring compressor to remove the coil spring carefully. Replace the old strut with a new one, reassemble the parts, and reinstall the strut into the vehicle. Tighten all bolts securely. Always check wheel alignment after strut replacement to avoid uneven tire wear. Worn struts can cause poor handling and increased stopping distance, so timely repair is essential. If unsure, let a certified mechanic handle the repair for safety.