大众桑塔纳2000倒车灯开关 084941521 通用精准传感

Volkswagen Santana 2000 rear light switch; OEM 084941521; high compatibility; older models generally match. Function: detects gear in reverse, signals transmission, lights up reverse lights and activates rear radar. Fits Santana 2000, 3000 and some ZhiJun models. After replacement, reverse lights illuminate and radar works; if reverse is engaged but lights don’t, radar inactive, or sporadically on, switch is likely worn.