Because the controller of an electric vehicle is generally damaged, if you choose to repair it, it will cause the controller to be unstable after repair, and it is easy to cause problems again, especially the motor may be abnormal, causing the electric vehicle to work hard.
In addition, maintenance of the controller requires a certain amount of electronic knowledge, and many older car repair masters are not specialized in electronic circuits, so it is particularly difficult to check. If the judgment is wrong, it may also cause some new problems.
Finally, repairing the controller requires a lot of manpower and material resources. Compared with its cost, it is relatively uneconomical. Many car repair masters are unwilling to repair it. In addition, the effort is so wasteful that it is impossible to collect less, and customers are unwilling to collect more. This is another major contradiction in maintenance.
Therefore, when the electric vehicle controller is damaged, the maintenance master usually chooses to replace it instead of repairing. Of course, if the controller only has some small problems with loose wiring, in general, the maintenance master will still solve it for the user.
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