故障现象一辆奔驰S300轿车,VIN号为WDB2211541*******,搭载276发动机和722.9自动变速器,行驶里程约为3000km,因频繁出现发动机起动困难的故障现象而进厂检修。故障诊断由于该车仅行驶约3000km,所以接车后详细向客户了解了该车的使用情况。据客户反映,平时使用非常爱惜,没涉过水,也没有发生过碰擦,最近才出现了发动机起动困难的故障现象,但是只要等一会儿或连续起动几次就可以正常起动着机。尝试起动发动机,可以顺利起动,且起动后仪表无报警。连接STAR-D进行快速测试,发现许多通讯方面的故障代码。由于故障代码较多,且很多都是通 Fault phenomenon A Mercedes S300 sedan, VIN number is WDB2211541 *******, equipped with 276 engine and 722.9 automatic transmission, mileage of about 3000km, due to frequent problems of engine starting difficulties into the plant overhaul. Troubleshooting Because the car only travels about 3000km, so after the car to the customer to understand the use of the car in detail. According to the customer, the usual use of very care, no water involved, but also did not touch the rub, recently appeared the engine starting difficult failure phenomenon, but as long as a while or a few consecutive start can be a normal start with the machine. Try to start the engine, you can start smoothly, and no alarm after starting the instrument. Connect STAR-D for quick testing and find many communication fault codes. Due to more fault codes, and many are pass