An essential part of cars that have automated gearboxes is the transmission control module, which is TCM. To keep everything running smoothly, it regulates the transmission’s functions, like shifting gears. The TCM’s placement could change from one model and brand of car to another. Some typical transmission control module locations are within the glovebox, on the gearbox, or beneath the center console. Let’s have a close look at its location, replacement cost, and many more. 

Ford Transmission Control Module Location

You can usually find the TCM on the transmission, beneath the centre console, or within the glovebox in a Ford truck, such as the Ford F150. If you want to know exactly Ford F150 transmission control module location, though, you should look it up in your owner’s handbook or ask a professional.

Where Is The 4l60E Torque Converter Located?

The 4l60e transmission control module location, often seen in Chevrolet automobiles, is housed beneath the cover close to the rear of the gearbox case. You should know that the position could change depending on the models and configurations you’re using.

Where I Can Find the Subaru Transmission Control Module

The Subaru transmission control module location is uncertain; however, it is likely to be beneath the centre console, on the transmission, or inside the glovebox, similar to other models. The easiest approach to finding the exact placement in a Subaru is to consult the owner’s handbook or an expert.

Signs of a Bad Transmission Control Module

If you ever have a problem with your transmission control module, you’ll need to have it inspected right away. A bad TCM will spell trouble for your vehicle and your ability to drive it. Fortunately, there are a few basic symptoms that you’ll most likely notice before this happens.

Check Engine or Transmission Light

There are a few possible explanations for why your dashboard’s Check Engine (or transmission) light is on. If the Check Engine light is on and shifting isn’t functioning, the transmission control module or another portion of the transmission system may have a problem.

Regardless, you should have a professional take a look at your car right once, or you may use a scan tool to look for DTCs (diagnostic trouble codes). There can be an issue with the transmission control module if the code P0700 appears.

Varying Movements

A faulty transmission control module location will result in improper or accidental shifting. It is responsible for shifting in an automated transmission system. This has the potential to cause anything from a little nuisance to a catastrophic catastrophe.

The sensation of the vehicle pushing back while driving is something that many drivers have mentioned. Also, as you accelerate, it could feel like the vehicle is jerking. If your car abruptly shifts into neutral or another gear, you may need a new control module. Keeping on the road would be extremely risky in any other case.

It is necessary to arrange for a tow to a repair shop to replace the module. If, by chance, your vehicle is equipped with a manual override feature, such as a paddle shifter, you do not need a towing service. Remember that this symptom might be caused by something else, such as a malfunctioning shift solenoid.

Problems Shifting Into Higher Gears

Your transmission should change into higher ratios at the right times as you progressively build speed. In the absence of this, you will find that your engine’s RPM continues to rise steadily rather than decrease somewhat as an upshift takes place.

If the defective TCM won’t let you change to a higher gear, you could never get to the speed you want because every gear has a maximum speed.

Problems Downshifting

The process is the same as before; however, the order is backward. Perhaps you’re trying to pass a slow-moving car, but no matter how hard you press the gas pedal, your transmission won’t shift into a lower gear.

As your speed drops as you exit an off-ramp, your gearbox should shift into lower ratios. It is what happens while you’re cruising down the highway. Put your automatic gearbox in first gear when you come to a complete stop. That way, it will be ready to run the moment you press the accelerator.

You might be able to coast to a stop in high gear if the transmission control module is malfunctioning. In high gear, you may not be able to accelerate when you restart.

Stuck in the Same Gear

This usually presents itself as being either stuck in neutral or first gear. The gearbox won’t shift, so you’ll either be locked in neutral or limited by first gear.

Delayed Shifting

Your vehicle’s speed is dependent on shifting gears at the right times. If the transmission control module location is malfunctioning, the gear shifts will be overly sluggish.

This will affect your acceleration, making it such that you lose speed instead of gaining it. Even poorer shifting performance is in store for you as you near a slope.

In the worst-case scenario, you’re trying to overtake a slower vehicle on a two-lane road, but your car won’t downshift right away, preventing you from making a swift move.

Worst Gas Mileage Ever

You should expect worse gas mileage if your transmission is malfunctioning. An automated gearbox’s efficient gear selection and timing algorithms allow it to get the best gas mileage.

A malfunctioning gearbox control module might alter the timing, causing your engine to work harder than usual. This will cause it to consume more gas than usual, leading to an increase in your gas bill.

Stroll Mode

When your transaxle fails, one noticeable and annoying sign is that your vehicle becomes stuck in “Limp Mode.” In most automobiles, this safety system activates when the transmission control module (TCM) detects a significant transmission issue. It delivers erroneous data or stops communicating with other control modules.

Limit your vehicle’s power and speed by changing into limp mode, which stops the automobile from moving into higher ratios.

Transmission Control Module Replacement Cost

A transmission control module replacement might cost anything from $500 to $900. Expenses for materials and labour should range from $450 to $700 and $50 to $200, respectively.

You may find a mechanic’s hourly labor costs online and get a new TCM from them. The price of the parts, however, accounts for a disproportionate share of the total cost of the repair, and this might vary substantially among vehicle manufacturers. Additional charges, such as taxes and fees, will increase the final price.

Transmission Control Module Location Repair Cost

Fixing it is another possibility after knowing the transmission control module location. Almost always, transmission control module reset will be less expensive than buying a new one. Repairing a transmission control module typically costs approximately $300.

Although the majority of TCM repair companies will provide a guarantee, there is still some risk involved in the repair not being done correctly.

If you can’t leave your vehicle for a few days to take your malfunctioning TCM to a non-local location, replacing it is the fastest solution.

Also Read: Ford Fusion Hybrid Battery Replacement Cost

Replacement and Reprogramming

Anyone with a rudimentary understanding of automotive components may be able to replace a TCM without much trouble. Finding the TCM, removing it from its mount, and removing it from the electrical cable or plug are all steps in the procedure. The next step is to install and program the new unit. Depending on the model, reprogramming a TCM may cost anywhere from $75 to $250, while replacing one can cost $400 to $800 (not including labour charges, which can add a further $80 to $200).

Can You Drive with a Bad TCM?

Even though it’s technically feasible, driving with a malfunctioning TCM is highly discouraged due to the increased risk of accidents and other problems.


If you want to drive safely and efficiently, you need to know the transmission control module location and functions. Vehicle maintenance requires familiarity with the signs of a malfunctioning TCM and the fundamentals of reprogramming or replacing it. If you need precise information or assistance with a particular model, such as a Ford F150, Subaru, or Ford Focus, check the owner’s handbook or a mechanic.


Nancy is a dedicated writer with years of experience. She is focused on the latest vehicle technology and high-end cars of various brands. She combines her passion for automotive advancements with a clear, engaging writing style, making complex topics accessible and enjoyable for her readers.

Leave A Reply