Understanding Your Subaru’s Oil Temperature- Meaning, Causes, Symptoms, Fixes

AT Oil Temp Subaru, also known as AT Oil Temp Subaru, or Automatic Transmission Oil Temperature, is a red light that flashes when the temperature of the transmission oil is high. The reason for this can be many things, such as the presence of low transmission fluid, a clogged the AT oil filter or towing a large load as well as driving during hot temperatures.

If the warning light for oil appears, it is crucial to get the action taken to cool the transmission to avoid injury whether you drive the Subaru Forester, Subaru Outback, Subaru Impreza, or any other Subaru model. Turn to the left and then turn off the engine to let the transmission cool down.

The AT oil temperature Subaru signal is an important indicator of the overall health of your car’s automated transmission. This article will go over the reasons why the AT oil temperature Subaru light is illuminated it, the possible cause of it, and what you can do to resolve it.

What is the reason for The AT Lube Temp Subaru Light flashing?

It is the AT Oil Temp light on your Subaru will blink when the temperature of the transmission oil is too high.

It can be caused by many things, like an AT oil filter getting blocked or driving in slow-moving traffic or towing a huge burden.

If you notice that the AT Oil Temp light is flashing, you must get it fixed immediately in order to avoid harming your transmission.

What should you do when the The AT Oil Temp The Subaru Light Flashes?

There are a variety of ways to correct the flashing of the oil temp light.

The first step is to try to slowly idle your car for a few minutes so that the transmission can cool down. If that fails then you might require adding transmission fluid if levels are low or have the transmission serviced.

In the event that the TAT oil temperature indicator comes on, you must act immediately. Overheating could damage your transmission , resulting in expensive repairs.

In the process of identifying the problem and fixing it quickly, you can prevent serious issues later on.

In certain situations you might need to completely replace your transmission. If you’re unsure of which option to choose, you’re advised to bring your vehicle to a repair shop for.

AT Oil Temp Subaru Causes

When the temperature of your AT’s oil light is on your car dashboard, then there could be possible reasons.

One possibility could be that the transmission is overheating.

It can be caused by different factors, like malfunctioning thermostats or low levels of fluid.

If the oil warning light comes flashing while driving, stop the car and turn off your vehicle immediately. Driving on the road could cause damage to the transmission.

Here are a few reasons to AT lighting up the oil temperature:

Low Transmission Fluid

The main reason for an illuminated light on the oil is low levels of fluid. If the level of AT oil is low, it isn’t able to properly cool the transmission.

Dirty AT Filter for Oil Filter

An oily AT filter may limit the flow of AT oil which can increase the temperature of the AT oil.

Another reason that is common is a blocked transmission cooler. This could happen in the event that it is the case that the AT oil filter isn’t changed regularly.

Bad Transmission Fluid Usage

Your vehicle’s manufacturer Subaru vehicle suggests that you use Subaru ATF HP “Dexron II” Transmission fluid.

Although using a different type of transmission fluid may appear to be working perfectly, it can lead to issues in the future.

Problem with Lubrication

Another reason that could be behind the AT oil temperature light could be an issue with the transmission’s lubrication system.

If this happens the transmission will not be able cool down effectively and may overheat.

The most common sign of a problem with the lubrication system is the appearance of gear slippage.

If you observe your car shifts gears, or shakes when you accelerate this could mean that you require your transmission maintained.

AT Oil Temp Subaru Symptoms

A few possible signs of this issue include the car’s hesitation when changing gears, or the transmission sliding.

In extreme cases the transmission may overheat and eventually fail.

If you spot any of these signs take your vehicle for a check-up with a professional as quickly as you can.

Warning light that flashes continuously

Signs of the high temperature of the transmission oil include the AT oil temperature indicator that keeps flashing continuously, and this light of warning is a sign of the fact that your automatic transmission may be running too hot.

It could be due to various reasons, like malfunctioning thermostats as well as low level of fluid in the transmission levels.

If the light turns on, it is important to stop and pull over the vehicle as soon as it is possible to avoid any further harm.

Transmission failure

Automatic transmissions rely on fluids used in transmissions to keep them cool and working efficiently.

When the oil in the automatic transmission temperature gets too high, it may result in transmission failure.

There are a variety of elements that be responsible for causing excessive AT oil temp light like the driving habits of drivers, the type of transmission fluid used and the terrain.

How do I fix at Oil Temp Subaru

There are many ways to resolve this issue by adding more fluid to the transmission and driving at a lower speed or stopping and letting the vehicle cool.

With just a little information and preventive maintenance with a little knowledge, you can prevent the oil temperature light from being illuminated and causing issues for your vehicle.

Stop the Engine and Allow it to Idle

If you notice the AT oil temp indicator on your Subaru Find a secure parking spot.

Allow the engine to idle, or switch the ignition to off, so that the transmission can cool off by itself without being under heavy loads.

After a few minutes the signal will stop without warning, but your engine will likely be overheated again as you travel the load.

Inspect Transmission Fluid Level

The most obvious option is to increase the AT oil in the event that you see the warning light for oil temperature. This can help reduce the temperature of the transmission and stop excessive heat from forming.

If the level of AT oil is within the acceptable range the next step is to change the fluid in your automatic transmission filter.

A blocked AT oil filter is removed using the help of a solvent like a carburetor cleaner. When the AT oil filter has been damaged, it’s going to need replacement.

If your fluid for your automatic transmission temperature remains too high after the steps above, then you might require taking your car to an expert mechanic.

The transmission could require a flush or replaced.

It’s a cost-effective repair and it’s crucial to fix the issue in the earliest time possible.

What is the cost to fix Subaru Transmission?

The cost of a transmission change can be as high as $200, however this is only one of the repair costs that could be incurred. To figure out the price of repairs you must know the issue with your car but the majority of repairs will begin at $1000 and will cost an average of approximately $2,000. A complete overhaul of your transmission or replacement could cost up to $3,500.

Subaru vehicles are expensive to maintain, particularly with regards to the engine.

My suggestion is to have your vehicle checked and the oil in the transmission changed.

If this doesn’t solve the issue it is important to evaluate the value of your vehicle against the expense in the range of a few thousand dollars for repairs.

If the numbers don’t make sense, you can you can sell the vehicle instead of fixing it, and make use of the proceeds to purchase another car.


There are several factors that could cause an issue with the transmission. A frequent reasons is that the transmission fluid is depleted or dirty.

This could result in the system overheating and cause failure.

Signs of a malfunctioning transmission can include jerking, shaking or a decrease in power.

If you are experiencing some of the signs it’s crucial to take your vehicle for a repair as quickly as you are able.

There are some actions you can take to prevent a transmission from failing by ensuring that the fluid is in good condition and at the proper level and not driving in high temperatures.

If you encounter an issue with your transmission There are several repair options. But the best method to prevent this problem is to implement precautions.

While you can repair this issue at home, it’s recommended to let qualified mechanics diagnose and fix your transmission.

We hope that this post was useful in understanding the meaning of oil temperature warning flashing, its causes, signs, and remedies.


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