Recognize Signs of Damage to Automatic Car Transmission When Buying a Used Car

Tips for choosing a safe and reliable used automatic car

Cars with automatic transmissions are often the main choice for daily users because of their ease of operation. However, even though it is convenient, the automatic transmission is an expensive component and is prone to damage. The problem is, damage to the transmission is often not clearly visible when the car is on display on the used car market. To avoid disappointment after buying, it is important to do an in-depth check of the transmission.

Here are some steps you can take before deciding to buy a used automatic car:

• Check documents and service history
  Before looking at the physical car, make sure you check the document and service history. Ask if there is evidence of regular service, especially regarding transmission oil changes. If the seller states that the automatic transmission does not need to be changed to oil, it can be a danger sign. Most automatic cars have an oil change schedule according to the manufacturer’s recommendations.

In addition, ask if there have been any improvements related to the transmission, such as the valve body, solenoid, or down the engine. If the answer given is unclear or too many reasons, this could be an indication of risk. Next, match the kilometers on the odometer with the interior condition of the car. If the kilometer is low but the interior looks broken or worn, you should be suspicious.

• Perform static inspection
  Before doing a test drive, do a static inspection. If the car uses ATF dipstick, check the color and smell of transmission oil. Normal oil is usually red/pink or slightly brown, but has no charred smell. If the oil smells charred or dark in color, this can indicate an overheating or slip.

Do not be fooled by new-looking oil if there is no proof of service. Sometimes the oil is changed just to cover the symptoms of temporary damage. Next, start the engine and pay attention to the idle vibration. Move the lever from position P to R, N, and D while clamping the brakes. Watch for a break in your teeth. Normally, there is a thin pause, but it should not feel “squeezing” loudly or a bunch of sound is heard. Also listen to strange sounds such as loud buzzing, squeaking, or metal sounds when changing positions. Also check the indicators in the dashboard and manual mode function (if available). Make sure the shift of the lever does not feel dragging or loose too much.

• Test the way and pay attention to special symptoms
  When doing a test drive, focus on three things: smooth shifting of gears, gas response, and behavior when the load changes. Start at a slow pace, then accelerate gradually. If the rpm rises high but the car is slow to increase in speed, this can show symptoms of slippage. Try moderate acceleration and feel whether the gear shift feels stomping or inconsistent.

Try testing the stop-and-go conditions. The brakes and repetitive paths can cause symptoms such as long pauses, vibrations when creeping, or pounding when the teeth enter. Do a light incline test: the car must still be willing to run without a charred smell or a strange soaring RPM. After the test drive, park and leave the machine in idle for a while. Pay attention to whether a warning light appears, a charred smell, or an oil drop. If there is, it is better to avoid buying. The safest thing is to take the car to a transmission specialist workshop for scanning and pressure checking, especially if you are serious about buying the car. The cost of checks is much cheaper than the cost of repairing due to a mistake in choosing.

gear function b in toyota hybrid car transmission

In Toyota hybrid cars, gear B has a special function related to power regulation and energy efficiency. These teeth are generally used to optimize the use of electrical and gasoline energy, and provide additional durability when driving downhill.

The use of gear B can help reduce the load on the braking system and increase the efficiency of fuel consumption. However, an understanding of the function of tooth B is very important so as not to use it wrong.