1. Pre fault symptoms: there is a strong sense of frustration when starting from 1 to 2, as well as downshifting. I didn't care at that time, because I had this feeling all the time in the first half of this year, but it gradually strengthened.

2、故障現象：在環線上導航時突然降到D3,且雪地和運動模式不停閃爍，SERVICE燈報警。停車熄火，再上電后也有報警顯示變速箱故障，但2秒后消失。繼續行走，加速到60碼以上上述現象再次出現。一路上一直采用上述方法重復了3次停車熄火。以后干脆讓它報警，變速箱鎖定到D3，不超過60碼開到4S店。

2. Fault phenomenon: when navigating on the loop line, it suddenly drops to D3, and the snow and movement mode keep flashing, and the service light gives an alarm. Stop the engine and turn on the power, there will be an alarm to show the gearbox fault, but it will disappear after 2 seconds. Continue to walk, accelerate to more than 60 yards, the above phenomenon appears again. The above method has been used for three times to stop the engine. In the future, simply let it alarm, lock the gearbox to D3, and drive to the 4S store within 60 yards.

3、送4s處理：4s店顯然熟悉該故障情況，我只是提到可能是電磁閥原因，檢修人員通過電腦聯機簡單檢測后為壓力調節故障。現場判斷為主油壓電磁閥問題。當時詢問4S是否是保修，因為我整車質保2年已過期。不置可否，只是說要到上面請示。

3. Send to 4S for treatment: the 4S store is obviously familiar with the fault, I just mentioned that it may be the cause of the solenoid valve, and the maintenance personnel simply detected the pressure regulation fault through the computer online. The main oil pressure solenoid valve was judged on site. At that time, I asked the 4S whether it was a warranty, because the warranty of my whole car had expired for two years. I'm not sure. I just want to go up there and ask for instructions.

過會兒請示結果下來，表示免費更換，但是要求3萬大保養順便在他那里做了。我當即表示沒有問題，因為我本來就是準備要做了，而且在淘寶上三濾，火花塞都買好了放車上，并且當即在4s購買了total7000機油。

After a while, I asked for the result and said that it would be replaced free of charge, but I asked for 30000 major maintenance, and I did it at his place by the way. I immediately said that there was no problem, because I was ready to do it, and I bought three filters and spark plugs on Taobao and put them on the car, and I immediately bought total7000 engine oil in 4S.

4、排除：你們應該看到前面文字中的紅色字體了吧，問題就出在這里，液力控制板(也叫油路板)更換電磁閥后再安裝上去后就出現噪音大。感謝4s店的師傅盡責盡力，更換后檢查到了這個板子問題，可能是與電磁閥不匹配，也可能是板子還有其他故障沒有檢查到。

4. Troubleshooting: you should see the red font in the front text. The problem is that the hydraulic control board (also called oil circuit board) is noisy after replacing the solenoid valve and then installing it. Thanks to the master of the 4S shop, he did his best. After the replacement, he found the problem of the board. It may be that it does not match the solenoid valve, or it may be that the board still has other faults.