- 12/31/2024
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The automatic transmission is exposed to many malfunctions, especially if the car is old or taken from a used car, it is a very important part that contains many sensitive components, and if it is not taken care of and dealt with within the correct steps, it will be damaged and possibly completely destroyed.
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Read more: Signs that your transmission oil needs to be changed
What are the problems of the automatic transmission?
If you want to recognize the most important malfunctions of the automatic transmission, they are:
Transmission Light or Check Engine Light
Some cars have a warning light that appears if an issue occurs, or the check engine light may appear in front of you if an issue is detected in the transmission, and these warning lights appear in the dashboard when the car's computer detects that there is an issue with the transmission and must be resolved immediately, and the issue may be as simple as a lack of oil or as large as damage to one of its internal components or damage to it completely.
Oil Leak
The presence of a red or dark pink liquid under the car is a sign that there is a leakage of transmission oil from one of the gaskets or from a hole or fracture caused by a blow or pothole on the street, and here you must check the oil level directly and do not drive the car until after making sure that you are able to drive it to the nearest mechanic or dealership to fix the defect, or coordinate to tow the car to the nearest garage to make the necessary repairs, and make sure not to drive the car with a low oil level so as not to cause other issues.
Can't choose a gear or stays in the same gear
If you face the issue of not being able to select a gear or the gear stays in the same gear and does not move, the cause of this issue may be low transmission oil due to leakage or for several other reasons, or the issue may be in the automatic gear valve body, as modern cars have a computer that gives commands to the gear when to switch between gears based on your choice, so the cause may be technical and you must connect the computer to the diagnostic devices to find out the fault code and fix it.
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Delayed gear change
If your car takes a long time to shift from one gear to another, the cause may be low oil level, loss of viscosity and contamination due to lack of maintenance or several other reasons, and although this issue may not be serious, it may lead to overheating and possibly damage some of its internal parts, or the cause may be a computer malfunction in giving the commands to switch gears in the correct way.
Slipping gears or high engine speed
You may also experience an issue with the gear slippage and sudden shifting or even sudden engine speed increase without any logical reason, and the reason behind this is the low amount of oil in the gear, or perhaps the wear of some of its internal parts or due to wrong maintenance, and the sudden increase in engine speed is evidence of an issue and may be caused by worn clutches or other damaged parts inside the gear.
Bumping during a change
One of the issues with the automatic transmission is also the appearance of a bump, shake, or blow during the change of gears, especially when the car is cold, this bump or shake may be noticed when shifting from lower to higher gears, for example, from second to third gear or from third to fourth and so on, and the reason behind this issue is either the age of the transmission and the wear of its internal parts or due to a decrease in the amount of oil in it.
Read more: Causes of engine oil consumption
Burning smell
If you notice the smell of burning, you should stop the car immediately and find out the cause of the smell, and if it is from the oil, you should check its level and make sure that the amount is enough to go to the dealership or mechanic to fix the malfunction.
Hearing a popping or buzzing sound
A buzzing or crackling sound coming from inside the transmission is usually a symptom of bearing damage, planetary gear damage, or any other internal issue, and the buzzing can also come from a damaged internal sealing surface, or even due to low oil level, as malfunctions or low oil level causes the parts to rub against each other strongly, which results in these sounds.
No power in the car
If the car's engine is running, and you put the gear you want to go with, but there is no power in the car to move it or the power is very weak, and the car goes slowly, this may be due to internal issues in the tar, or the brakes are stuck and not released from the tires, or the computer in the car limits the power due to an issue it detected in order to protect the engine, and checking the computer is the first thing you should do to identify the issue and then address it.
