Shop Hyundai Santa Fe Transmission Position Sensor Switch Replacement & Hyundai Santa Fe Transmission Sensors Location. To ensure the seamless performance of your Hyundai Santa Fe, regular maintenance of transmission sensors is crucial. These sensors are pivotal for relaying information about the vehicle's speed and gear positioning to the transmission control unit. Look out for signs such as erratic shifting or the check engine light, which may signal the need for sensor replacement. To extend their lifespan, keep the transmission fluid clean and at the correct level. When choosing a replacement, opt for OEM-quality sensors that promise durability and a precise fit. Always consider compatibility with your Santa Fe model and year to guarantee optimal functionality. Proper installation is key, so either follow a trusted guide or engage a professional to maintain warranty and ensure safety.