Is there a big problem with the old Jetta electronic throttle?

Jetta uses an electronic throttle and must be cleaned regularly, but after each cleaning, it must be re-matched with the computer with an on-board decoder. There is a simple reason. The throttle opening is different when it is clean and dirty. Remember to speak when the computer is dirty. Now that it is clean, we must tell it a new beginning. If you don't match it after washing, or if you don't match it well, it will cause high fuel consumption.

By the way, it's all the same whether it's detachable or not. It is suggested that it is best to avoid disassembly, which can reduce the wear caused by disassembly. You know, many times the car is broken, so try not to dismantle it if you don't dismantle it.