"It is important to cover some basics of how an alternator works. The alternator is located on the engine itself and plays the critical role of providing power to the battery. It keeps the battery continuously charged and the car’s electrical and computer systems up and running.
The alternator works about as hard as any part of your car, so eventually, it is bound to fizzle out. The average longevity of an alternator is seven years or about 150,000 miles. Several factors can impact the lifespan of your alternator, including the quality of the part, the overall condition of the vehicle, and how many electronics are being used.”
有一点点不明显的冒烟和异味。电池启动时13.5v，常温回落到12v，冷气机开关正常，但是发电机摸上去非常烫（高地相同情况不怎么烫。08年ES350，13万哩，timing chain，两年新的水泵、张紧轮、怠速轮、蛇型皮带和相关零件）。
目前，发电机（alternator）是嫌疑。（alternator工作非常辛苦，13万哩一刻不停地运转着，平均使用寿命7-8年）
"It is important to cover some basics of how an alternator works. The alternator is located on the engine itself and plays the critical role of providing power to the battery. It keeps the battery continuously charged and the car’s electrical and computer systems up and running.
The alternator works about as hard as any part of your car, so eventually, it is bound to fizzle out. The average longevity of an alternator is seven years or about 150,000 miles. Several factors can impact the lifespan of your alternator, including the quality of the part, the overall condition of the vehicle, and how many electronics are being used.”
https://www.meineke.com/blog/when-is-it-time-for-a-new-alternator/
大灯开始变暗 发电机发出燃烧的气味 仪表板警告灯突然打开 引擎发出刺耳的声音 汽车电子设备（包括收音机）间歇性故障
发动机idle时用长crewdriver一头贴着alternator另一头顶着耳朵听听有没异响，再看看皮带边縁有没磨损的痕迹。或者打开后盖看看brush 怎样了。
分别是 20万，17万，17万，10万 miles
日本车，韩国车，德国车
估计车坛里的车基本都是好车，alternator的寿命大大超出了大数据的统计区间。
我的车135,000哩，正好落入俗套。也希望就是这个问题，换新买平安。
呜声 冒微烟（前几天换了机油，没有机油泼出/泄漏，应该不是烟的原因） 发电机外壳发烫
可能是alternator开始变坏的过程。等周末拆卸皮带看看其他零件的情况就能基本确诊了。