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What does A/T Oil Temp mean on a car?

3 Answers

StMalia

09/06/25 8:06am

On a car, A/T Oil Temp indicates that the automatic transmission fluid temperature is too high. Here are the relevant details: 1. Display: Every time you insert the key and turn on the power, the dashboard will display A/T Oil Temp, which will disappear after starting the engine. This is a normal phenomenon. If this indicator appears while driving, it means there is an issue with the transmission fluid. 2. Automatic Transmission Fluid: Automatic transmission fluid is an oil product used to keep the gear system clean. It functions to lubricate, reduce the working temperature of the automatic transmission, and extend the lifespan of the transmission components.

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FinleyDella

09/18/25 7:42am

I've always driven automatic transmission cars. The A/T OIL TEMP is the automatic transmission oil temperature warning light, which indicates that the oil temperature is too high when illuminated. This commonly occurs during continuous steep hill climbing or stop-and-go traffic, where the transmission is under excessive load. If you see this light come on, don't push the car too hard as it can easily damage the transmission. Pull over immediately and rest for about ten minutes until the light goes off before moving again. Regularly check the transmission fluid level and cooling system to prevent small issues from becoming major problems.

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McSara

11/01/25 8:08am

A/T OIL TEMP indicates excessive automatic transmission fluid temperature. This warning light frequently illuminates during off-road driving or heavy towing. High temperatures can thin the oil and damage internal components - I've personally experienced costly repairs due to this issue. The immediate solution is to reduce speed and stop to allow the transmission to cool. Additionally, check for clogged oil passages or cooling fan malfunctions, and maintain regular fluid changes to ensure cleanliness. Never ignore this warning as it may lead to cascading failures.

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More Forum Discussions

Should You Fill Up the Gas Tank Completely in Summer?

It is not recommended to fill up the car's gas tank completely during summer. Overfilling the tank can cause gasoline to easily overflow from the vent hole, especially when driving in high-temperature summer weather. In such cases, spilled gasoline can pose serious risks. Additionally, overfilling the tank can easily clog the fuel tank vent hole. More details are as follows: 1. Clogged Vent Hole: If the vent hole is blocked, the fuel level drops while driving, creating negative pressure inside the tank. This can lead to vapor lock in the fuel pump, resulting in poor fuel supply or even complete fuel cutoff, which can be life-threatening. 2. Charcoal Canister and Filter: If the charcoal canister and its filter are not replaced in time, aging can cause blockages. This leads to inadequate ventilation in the fuel tank, causing issues like poor refueling and suction noises at the fuel filler neck during idling. To maintain vehicle stability, it is advisable to replace both the charcoal canister and its filter simultaneously.

What is the optimal tire pressure for sedans in summer?

During summer, it is recommended to maintain sedan tire pressure between 220 and 230 kPa. As the only component in contact with the road surface, tires are crucial for driving stability and safety. Tire pressure plays a vital role in tire performance. Excessive pressure reduces the contact area between the tire and the road, thereby decreasing traction and handling stability. Relevant considerations include: 1. Regular tire pressure checks: In midsummer when roads are exposed to prolonged direct sunlight, the temperature and pressure of the air inside tires increase significantly during driving. This poses substantial challenges to tires, especially during long-distance travel when softer tires with higher pressure face significantly increased risks of blowouts. 2. Ventilation and cooling after sun exposure: When parked outdoors in summer, cabin temperatures can exceed 60°C. Many have experienced burning sensations after entering sun-exposed vehicles. Beyond high temperatures, sun exposure also leads to poor air quality with elevated levels of formaldehyde and other harmful gases.

Is it safe to keep a gas cylinder in the car during summer?

Keeping a gas cylinder in the car during summer is unsafe as it is considered a hazardous item. Relevant information is as follows: 1. Risk of explosion: Cars experience bumps while driving, and if the cylinder has quality issues, the thin walls can easily be damaged during transport, leading to explosions upon impact. Additionally, car trunks can reach very high temperatures in summer, which may cause the cylinder to explode due to heat. Therefore, gas cylinders should not be stored in car trunks. 2. Additional information: Any vehicle transporting hazardous materials must have a transportation permit issued by the chemical industry department, and drivers must undergo training. During transportation, a certified escort must be present. Illegal storage of gas cylinders can be reported to public security authorities or fire management departments.

Is it normal for cars to consume more fuel in summer?

It is normal for cars to consume more fuel in summer, and the relevant information is as follows: 1. Excessive burden on the air conditioning: Summer is the peak period for air conditioning usage. After prolonged use, dust can easily accumulate in the air conditioning system, which not only breeds bacteria and causes unpleasant odors in the cold air but also increases the car's fuel consumption. 2. Dust on the car body not cleaned in time: Many car owners may scoff at this and not believe that the cleanliness of the car body can also increase fuel consumption. In fact, there is scientific theory behind this. The greatest resistance a car encounters while driving comes from the air. If there is too much dirt and dust on the car body, it will increase the resistance the car faces while driving.

Should You Use Internal or External Air Circulation When Driving on the Highway in Summer?

When driving on the highway in summer, you should use the external air circulation. Appropriately open the windows or turn on the external air circulation: During long drives on the highway, it's advisable to slightly open the windows or activate the external air circulation to maintain fresh air inside the car and prevent dizziness caused by lack of oxygen. When sleeping in the car, do not close the windows or turn off the external air circulation. Activate the external air circulation: Whether to use internal or external air circulation on the highway depends on the season and weather. When the weather is comfortably cool, you can turn on the external air circulation; when it's hot, avoid using the external air circulation. On rainy days, switch to internal air circulation and also turn on the defogging function to prevent fog from obstructing your vision.

Why Does the Engine Sound Louder When Starting the Car in Summer?

Summer starting car engine sound loud reasons are as follows: 1. Aging sealing strips: The engine noise of the car is getting louder and louder, possibly because the sound insulation effect of the car has deteriorated. When the doors and windows of the car age, the sound insulation effect becomes much worse. Originally, the engine sound could not be heard inside the car, but after the sealing strips age, it can also be heard. In this state, not only the engine sound can be heard, but also the noise outside the car can be transmitted into the car. 2. Check the engine oil: If it is not a problem with the sealing strips, then the engine oil should be checked. The main function of engine oil is to lubricate the engine. If the engine oil is overused or deteriorated, it may affect the lubrication effect of the engine, resulting in increased noise.

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