作者：郭郭熊Harry

更换缘由

我2013年购入了一辆别克君越轿车，至今正好10年。前天正打算开车出门办事，按车钥匙解锁时却发现车钥匙的按键被我直接按陷进去了，然后我又换了另外一个车钥匙，发现按键部位也出现了裂纹，估计再按几次也会陷进去，10年的时间导致钥匙材质都老化了。

我先立即把事情办好，然后打电话问了一下4S店换车钥匙要多少钱，4S店直接开价1000元，我整个人都懵掉了，怎么这么贵？我又问了路边的修车店，说至少也要400元，这也太贵了，钱这么好赚么？

苦于囊中羞涩，又不得不换车钥匙，我就度娘了一下：车钥匙芯片应该是没问题的，可以自己从网上购买外壳配件自行更换，仅需11元即可解决，但是外壳更换的过程有点复杂。此时，我不由想起了前前前任老板经常对我说的话，“你是个工程师，不要怕困难，一切问题都可以通过学习来解决。”没错，咱好歹也是个工程师，这点难度算个球，节约银子要紧。于是我从某宝上购买了两套配件和工具（如果家里有工具的，直接购买配件就行了）。 

更换过程

两天后，我收到了配件和工具，开始动手更换。

步骤1：打开原装钥匙外壳

由于原装的车钥匙外壳用胶水粘结得很紧，所以直接用手打不开，需要用到上图中的钳子。先按旋钮将钥匙弹出，然后用钳子卡进缝隙处用力一撑，钥匙外壳就分开了，将钥匙芯片和旋转部件（带钥匙齿、转轴和弹簧）取出。

步骤2：互换原装钥匙和新买配件的钥匙齿

这一步略有复杂，由于原装钥匙的旋转部件与新配件不配套，所以不能直接装到新配件上，只能把钥匙齿拆下来与新配件的旋转部件上的钥匙齿互换。

1）使用钢针和锤子将原装钥匙旋转部件和新配件上固定钥匙齿的固定销分别敲出。

注意：一定要在桌面上垫好泡沫棉之类的保护垫！一定要在桌面上垫好泡沫棉之类的保护垫！一定要在桌面上垫好泡沫棉之类的保护垫！（重要的事情说三遍）别问我是怎么知道的，血的教训！  

2）拔下钥匙齿并互换，重新敲入固定销

注意：如果原装钥匙齿与新配件旋转部件的固定销不太适配，可以用锉子把钥匙齿下部的凹口锉一锉，把圆弧锉大一点，这样固定销就能敲进去了，将钥匙齿固定在新配件旋转部件上。一定要把固定销全部敲入，不能露一点在外面，不然钥匙旋转会被卡住。

3）将芯片、旋转部件（带钥匙齿）、转轴和弹簧装入新配件壳体

4）将另一半外壳盖上

注意：另一半外壳左上角有一个凹口，要将这个凹口对准弹簧顶部伸出来的那一节，卡住后逆时针旋转两圈，然后再盖上，不然按下旋钮钥匙无法弹出。

5）装上电池和电池盖，拧入固定螺丝，贴上别克的LOGO，大功告成。

总结

世上无难事只怕有心人，这次既学会了一项新技能，又节约了银子，还是蛮开心的，希望这篇文章能够帮到有需要的朋友。

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