宝马系列 倒车雷达 6620 9826784-01 灵敏探测

When your BMW reverses, radar frequently false alarms, slow response or no response, or continuous long beeps or intermittent silence, this usually indicates aging or internal circuit failure of the original rear parking sensors. These sensors use ultrasound to detect obstacles behind the car and provide real-time distance feedback on the center console or via the buzzer to ensure safe reversing. OEM numbers 6620, 9826784-01, and 0263053558; fits BMW 3 Series (E90/E91/E92/E93), 5 Series (E60/E61), X3 (E83) and X5 (E70). Installation: disconnect vehicle power; ensure sensor mounting holes are clean and free of rust; connectors and wiring harnesses must be securely connected to avoid signal interference.