NEW OEM Tesla M3/Y/CT Windshield Relative Humidity And Temp Sensor 1858193-00-B

Maintain accurate cabin climate monitoring and windshield environmental sensing with the NEW OEM Tesla Windshield Relative Humidity and Temperature Sensor (Part Number: 1858193-00-B), engineered for Tesla Model 3, Model Y, and Cybertruck applications. This OEM-style sensor is designed to monitor interior humidity and temperature conditions to support automatic climate control operation, windshield defogging performance, and HVAC system efficiency. Manufactured as a precision automotive electronic component, this sensor integrates with Tesla’s factory climate management systems to help optimize cabin comfort and visibility under changing environmental conditions. By continuously monitoring humidity and temperature levels near the windshield area, the sensor assists with automatic adjustments to airflow, defrost functions, and climate regulation. This replacement component is ideal for resolving climate control irregularities, sensor faults, windshield fogging issues, or damaged environmental sensing hardware during HVAC or windshield service procedures.

Confirm the correct sensor application and mounting location before installation
Disconnect vehicle power according to Tesla service procedures before servicing electrical components
Inspect wiring connectors and surrounding mounting areas for damage or contamination
Remove the faulty sensor carefully to avoid connector or windshield trim damage
Install the new sensor securely into the factory mounting location
Verify proper electrical connection and sensor alignment after installation
Test HVAC and defogging system operation following installation
Professional installation is recommended for climate control or windshield-related service procedures