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车型:E90,配置N52发动机。行驶里程:120892km。故障现象:遥控钥匙无法锁车。故障诊断:根据客户描述试车,使用遥控器进行上锁、解锁,结果无法执行,后备箱盖也无法自动打开。使用仪表台中控锁按键开锁和上锁正常,车辆可以正常启动,同时询问客户得知该车仅剩下这一把钥匙。连接ISID诊断,并没有发现与该故障有关的故障码,由于遥控开锁涉及的部件比较多,决定从遥控器的控制原理进行诊断。查阅相关资料得知,遥控器的无线信号走向为遥控器→天线→择优多相式模块通过遥控服务信号线
Model: E90, equipped with N52 engine. Mileage: 120892km. Symptom: remote control key can not lock the car. Troubleshooting: According to the customer test description, using the remote control to lock, unlock, the results can not be performed, the trunk lid can not be opened automatically. The use of instrument console lock lock unlocked and locked properly, the vehicle can be started normally, at the same time asking the customer to know that the car is the only one of the keys. Connection ISID diagnosis, and found no fault code associated with the fault, due to remote unlocking more components involved, decided to control the principle from the remote control diagnosis. Access to relevant information that the wireless remote control signal for the remote → antenna → multi-phase module through the remote service signal line