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故障现象一辆奔驰S350轿车(底盘号为221156),累计行驶里程约为5万km,客户反映仪表盘上蓄电池报警灯报警。故障诊断接车后原地起动发动机,发现仪表盘上出现红色报警标识,提示蓄电池不能被充电(图1)。打开发动机室盖检查,发现不是原车使用的蓄电池。询问客户得知,几天前该车在外地正常行驶时,发动机熄火后就无法再起动了,只好在当地换了一块蓄电池,而且客户还反映,在换蓄电池时,没有将发动机熄火,而后就出现上述仪表报警的现象,但
Symptom A Mercedes S350 sedan (chassis number 221156), the cumulative mileage of about 50,000 km, the customer reflects the instrument panel alarm light alarm. Troubleshooting After the car was started, the engine was started and the red alarm indicator appeared on the dashboard indicating that the battery can not be charged (Figure 1). Open the engine room cover inspection and found that the battery is not the original car. Asked the customer that a few days ago the car in the field when the normal driving, the engine can not be started after the flame out, had to change a local battery, but also customers also said that in the replacement of batteries, the engine did not stall, and then The phenomenon of the above instrument alarm, but