别克凯越/赛欧/乐风倒车灯开关 90482454 通用原厂传感器替换

Buick Excelle, Sail, or Lova models (2003-2010) reverse light switch, OEM 90482454, mounted on transmission housing; its core function is to complete the circuit when reverse is engaged, illuminate reverse lights, and activate the reversed radar system. This universal OEM-grade sensor uses wear-resistant contacts; replacement easy; labor about 0.3 hours; remove transmission guard and thread into place. If reverse lights don’t illuminate, radar inactive, or lights flicker when in reverse, switch contacts or seals may be worn; replace to remove safety risk.