Automatic car can not hang gear fault repair ideas and methods

The car was parked here today and it was parked well. If I get in the car again, it will not be able to be put into gear. I called the repair shop to tow the car and asked for a price of 1,000 yuan. In fact, there is no need to call a tow truck if it can't be put into gear. I will see it today. Let's see if I can solve this problem for him without spending money. Try the car first, step on the brakes to start the car, and then shift into gear, it is indeed impossible to shift into gear.


We all know that the automatic transmission car needs to step on the brake before it is in gear, and the car computer can unlock the gear lever when it receives the brake signal. How should I check in this situation? It's actually very simple. Use the brake pedal, lightly step on the brake pedal, and then use your ear to approach the gear lever.

Listen to see if there is a slight rattling sound. If there is, it means that the gear mechanism inside is blocked. If not, it means that a brake light switch on the brake pedal is broken. Let's listen to it. If there is no sound, it means that the brake light switch is broken. Let's take it out to see what's going on. The green one is the brake light switch.

It's very easy to disassemble, just unplug it,

Then turn it counterclockwise slightly, and then remove it. Let's see if it is broken. Use this multimeter to test whether the two terminals are connected. If it is not connected, it means that it is broken. Sure enough not conducting,

Because we can't buy accessories here for the time being, let's take it apart and see if it can be repaired. Here is a clip for him to pry out.

Then this is the structure inside. Let's take a look, the cause of the problem has been found, and it can be seen that this contact has been burned black,

After finding the cause of the problem, it is not easy to solve it. Find a piece of fine sandpaper, and polish the contact. The contacts are all burnt black. After grinding, we will assemble it back. Let's test whether it is connected again. OK, the brake light switch has been repaired.

Load the car below to see the effect. The installation is also very simple. Put the brake light switch in for him, then turn it clockwise, plug the plug in and it is installed. Then we will start the vehicle and step on the brakes to see if we can shift gears. Then use the brake method to listen to it. Is there any dapping sound? If there is a sound, it is normal. Step on the brake and prepare to shift. It is very smooth. The problem has been completely solved. How is it that it is very simple? Learn some car maintenance knowledge every day, and you can repair your car yourself


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