丰田变速箱档位开关 84540-52040 稳定可靠替换件

Toyota automatic transmission gear shift switch 84540-52040 mounted on the side of the transmission case; transmits gear selection signals to the ECU to ensure correct shifting logic and proper starting interlock. Compatible with Camry, Corolla, RAV4 and other models. Installation requires about 1-1.5 hours and involves removing the battery negative terminal and transmission guard plate. If the instrument cluster displays incorrect gear, vehicle cannot start (especially in Park), shifting is jerky, or gear shifter feels loose, the switch contacts are worn and replacement is advised.