新能源汽车无钥匙系统工作原理与故障诊断研究

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中图分类号：U463.6 文献标识码：B 文章编号：1003-8639（2026）01-0183-03

Research on the Working Principle and Fault Diagnosis ofKeyless System for NewEnergyVehicles*

Tan Shifa

（Meishan Vocational and Technical College，Meishan 62oo1o， China）

【Abstract】Regarding the frequent occurrence of faults in the keyless entry and start systems of new energy vehicles，taking the Geely EmgrandEV45O model as the research object，this paper systematicallyanalyzes the composition structureand core working mechanismof itskeylessentryand startsystems.Bycombining typical fault cases where the keyless start function is normal but the entry fails，this paper constructs a stepwise fault diagnosis process of "function investigation $$ signal detection $$ component location"，clarifies the key detection parameters and determination criteria，and provides practicalreference forthe teaching practiceof new energy vehicle maintenanceand the on-site fault diagnosis.

【Key words 】 new energy vehicles;keyless system;fault diagnosis

0 引言

随着汽车电子与智能化控制技术的迅猛迭代，无钥匙进入与启动系统（PassiveKeylessEntry&PassiveKeylessStart，PEPS）已成为新能源汽车不可或缺的核心配置。（剩余2941字）