Remember the second time you did it. The first time you changed the door handle and broke a bone
ZebulonReynolds 
4 On the evening of July 21 (Sunday), it rained heavily in Chengdu. Suddenly, the central control screen showed that the “Parking Distance Alarm Device” PDC failed when getting on and reversing. The specific fault was that there was an image in reversing and no front and rear radars. The first psychological reaction was that the car was almost 10 years old. Did it fail instantly? Get off, lock the car, unlock, start, and reverse in one go, but the fault still remained. Due to the heavy rain, I had to grit my head and continue to drive slowly. Before driving far, the instrument panel instantly lit up a few messy fault lights, and then went out again. I ignored him. While waiting for the traffic lights, I checked the vehicle information. The front and rear brake disc life interface is full of yellow triangles in front. It stopped in front again and did it again in one go. I checked it online, but the PDC failed. There was nothing else. I didn’t take care of it. I thought there was no problem with the transmission system and there was no other abnormality on the Houshang Expressway. I drove back. The only time I was driving at high speed was nervous.
When we arrived at the garage, according to the Internet, the storage lid on the right side of the trunk was removed. Sure enough, we found a 1- 2 cm piece of water under the box. The ones marked with red frames were all soaked in the water. The plug was unplugged and took out.
When we arrived at the garage, according to the Internet, the storage lid on the right side of the trunk was removed. Sure enough, we found a 1- 2 cm piece of water under the box. The ones marked with red frames were all soaked in the water. The plug was unplugged and took out.
When I opened it, I saw the same as what was said on the Internet. The root of the second pin of the electronic component L4949EP voltage regulator chip was directly soaked in water and corroded. Others also had traces of water traces. It is conceivable that Rome was not built in a day, and the leakage must be long-term accumulation.
Lock the car and sleep. I took the board back and had been thinking about how to deal with it for the past few days. Whether to replace the entire box or buy a chip. Unfortunately, there have been a lot of things to do recently, and it has not been put on the agenda since Wednesday. If you need to use a car on Friday, you have to deal with it in time. Last night, I took time to think about it. The chip was broken to the pins. How to solder was a problem. I started using a red-hot blade to see if the plastic on the pins could be removed. The result was that the quality was relatively good and the plastic did not move. The position was not easy to start, so I used a nail clipper to cut it slowly. In fact, I shaved it. Not to mention, I finally exposed a little bit of the broken pins and went to sleep.
Today, I had something to do during the day, but I only had time to do it again at night. My colleague telephoned Luo Tie in the afternoon. I had also thought about what blade Luo Tie to use before, but I didn’t win, so I made do with it. I just welded the two ends slowly, but I still welded them back and forth three times before the welding was completed. I took a multimeter and touched the capacitor next door, and it was connected.
I went to the garage to plug it in, start, and reverse it in one go. It was normal.
Place the module in the middle grid. When looking at it on Sunday, only the original box has water (the grid in the upper right corner), and the rest of the grids are clean. Remind us to pay attention to inspections, especially on rainy days, and don’t want to find leaks. It will take 10 years to drive, 190,000 kilometers.
Place the module in the middle grid. When looking at it on Sunday, only the original box has water (the grid in the upper right corner), and the rest of the grids are clean. Remind us to pay attention to inspections, especially on rainy days, and don’t want to find leaks. It will take 10 years to drive, 190,000 kilometers.
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