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- Compatible with Tesla Model 3 2017-2020; replace OEM 1106818-00-A 1106818-00-F; restores accurate outside air reading for HVAC and instrument display. - Function: measures ambient temperature for HVAC logic and range forecasts; helps the system make correct heating and cooling decisions. - Build: ABS plastic housing with plug-in 2-pin connector; stable signal after installation and on-board reset. - Fixes: resolves erratic outside temperature, slow cabin warmup, A/C cycling, and fan behavior; supports proper defrost and compressor strategy. - Install Notes: verify trim and harness before order; compare the code on the removed part; mounts near the front bumper; suitable for driveway replacement with basic tools.