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故障现象一辆奔驰E260车,装配274发动机,行驶里程约为8万km,因仪表信息中心提示发动机冷却液温度过高而请求救援,维修人员赶赴现场将车辆拖回修理厂检修。故障诊断车辆回厂后,接通点火开关尝试起动发动机,发动机顺利起动,仪表盘上冷却液温度指示正常。连接故障检测仪对车辆进行快速测试,没有发现任何相关故障代码。经询问驾驶人得知,在车辆行驶过程中,仪表信息中心出现冷却液温度过高的报警信息,冷
Symptoms A Mercedes-Benz E260 car, assembly 274 engine, mileage of about 80,000 km, due to instrumentation information center prompted the engine coolant temperature is too high and requested rescue, maintenance personnel rushed to the scene to tow the vehicle overhaul repair shop. Troubleshooting After returning to the factory, turn on the ignition switch to start the engine, the engine starts smoothly, and the coolant temperature on the instrument panel indicates normal. Connect the Fault Detector to quickly test the vehicle without any associated fault code. Upon inquiry, the driver learned that during the driving process of the vehicle, an alarm message appears that the coolant temperature is too high in the instrument information center, and the cold