故障现象一辆行驶里程约为18万km的2009款保时捷卡宴(Cayenne)车(搭载型号为M55/01的自然吸气发动机),车主反映该车仪表盘上的灯光系统故障灯处于常亮状态,右前和右后转向灯常亮,右转向指示灯正常,2个前照灯总成中的静态转弯灯一直处于熄灭状态。故障诊断接车后,首先验证故障现象。接通点火开关,该车仪表盘上的灯光系统故障灯常亮(图1),右侧前后转向灯常亮,右转向指示灯此时熄灭。向右拨动转向开关,右前后转向灯依旧常亮,同时右转向指示灯跳闪。向左 Symptoms A Cayenne 2009 (naturally aspirated engine model M55 / 01) with a mileage of about 180,000 km was shown. The owner of the car indicated that the light system fault light on the dashboard was steady , The right front and right rear turn signals are always on, the right turn indicators are normal, and the static turn signals in the two headlamp assemblies are always off. Troubleshooting After you pick up the car, first verify the problem. Turn on the ignition switch, the vehicle dashboard light system fault light is always on (Figure 1), the right front and rear turn signal light, right turn indicator light is off at this time. Turn the switch to the right, the front right and left turn signals are still lit, and the right turn indicator flashes. left