If your Jeep Commander displays a transmission overtemperature problem, you can address common issues like changing the fluid, replacing the sensor, and checking for leaks. 

Regular maintenance and prompt solutions prevent overheating and keep your transmission running smoothly.

When your Jeep Commander’s transmission gets too hot, it can make driving challenging or even dangerous. Many Jeep owners, especially those with a Commander, often face the frustrating issue of transmission overtemperature. 

Figuring out the problem is tricky because there are numerous possible causes, including issues with transmission fluid, temperature sensors, the starter, PCM, ECU, battery, weather conditions, heavy use, the cooling system, solenoids, and the transmission itself. 

Regularly checking your Jeep’s oil and fluid levels is crucial to preventing this problem. Stay tuned till the end for solutions to each cause; it’s a detailed discussion, so be patient!

What Happens When Your Transmission Overheats?

Transmission overtemperature occurs when your Jeep Commander’s transmission gets too hot. When this happens, it can lead to serious issues, affecting your vehicle’s performance. 

Overheating can cause transmission fluid to break down and components to wear out, potentially resulting in costly repairs.

If you see “Transmission Over Temperature” on your dashboard, your transmission is too hot, usually due to high fluid temperature. 

This can affect how your transmission works. The warning stays until your car cools down, so wait before driving again.

Various issues, like problems with fluid or filters, may cause high transmission temperature. However, the error might appear even if your transmission isn’t overheating. 

High transmission temperature can damage components and affect the engine, so get your vehicle serviced promptly if it happens.

What are the symptoms of an overheated transmission?

If you see these signs, think that your transmission might be getting too hot.

Check Engine Light

The first sign of trouble is often the illuminated Check Engine Light on your dashboard, signaling a potential issue with the transmission.

If the check engine light in your Jeep Commander turns on, it often means there’s a problem with the transmission, leading to overheating.

Transmission Fluid

If your transmission fluid looks burnt or black, it’s a sign of a fluid problem that can lead to your car overheating. You may notice strong and unpleasant smells coming from your car. Overheating happens when you keep your car’s fluid on time.

Delay in Changing Gears

No overheated transmission may struggle to change gears promptly, leading to delays in acceleration. If your transmission is too hot, you’ll notice a delay when shifting gears.

Slipping

Overheating can cause the transmission to slip, making your Jeep feel like it’s losing power intermittently.

When your transmission gets too hot, it often leads to slipping. This happens when the inside parts of the transmission don’t work right. 

You might notice your Commander’s engine making more noise and the gears not working smoothly when overheating.

No Start, but It Sounds

In severe cases, an overheated transmission may prevent your vehicle from starting, even though the engine cranks.

Your car won’t start but makes annoying clicking sounds, indicating a likely overheated transmission.

Read also: Vehicle Phone Requires Service

What Causes the Jeep Commander’s Transmission Over Temperature Issue?

The Jeep Commander’s Transmission Over Temperature problem happens when things like low or bad fluid, sensor issues, extreme weather, towing, or hard use affect the transmission. It’s like the transmission gets too hot and needs attention.

Typical Issues

Low/Bad Fluid:

Insufficient or degraded transmission fluid can lead to overheating. Regularly check and maintain the proper fluid levels.

If there’s insufficient transmission fluid, your transmission can get too hot. When it has to work extra hard without enough fluid, the existing fluid will heat up and lose its ability to cool and efficiently operate the transmission.

Faulty Transmission Fluid Temperature Sensor:

A malfunctioning sensor may provide inaccurate temperature readings, leading to overheating issues.

If the transmission fluid temperature sensor is broken, it can send the wrong message to the car’s computer. When this occurs, you’ll see a warning message about the transmission being too hot.

Climate:

Extreme weather conditions, especially high temperatures, can contribute to transmission overheating.

In really hot weather, your Jeep Commander’s cooling system might struggle, causing the transmission fluid to heat up and wear out faster. 

However, this issue is temporary and depends on the weather. To prevent problems, make sure to use the fluid recommended by Jeep.

Towing:

When you tow something heavy, the transmission can get hot because the extra weight puts more pressure on it. This causes the transmission to work harder and heat up.

Heavy Use:

In busy city traffic where you often stop and start, automatic transmissions may work extra hard, possibly causing them to get too hot. If needed, consider adding a cooler to prevent overheating.

Cooling System Issues:

If the front of the radiator is filled with dirt or big debris, the transmission fluid won’t cool down properly, causing the transmission to overheat. Make sure the radiator is clear of any issues. Checking it only takes a moment.

Solenoid Issues:

Solenoids control the fluid and pressure in the transmission by letting fluid in. If the solenoids are not working correctly, even if there’s enough fluid in the pan, it might not reach the parts of the transmission that need it. This can lead to the transmission overheating.

Uncommon Issues

Identifying and promptly addressing these uncommon issues can help prevent transmission overheating in your Jeep Commander.

Regular maintenance and promptly addressing issues can prevent transmission overheating and keep your Jeep Commander running smoothly. 

If you encounter the Transmission Over Temperature warning, it’s advisable to consult a professional mechanic for a thorough inspection and necessary repairs.

• A warning about transmission overtemperature might pop up due to electrical problems like corroded connections or a faulty starter.
• Check the thermostat; if the temperature is below 190, it’s likely an electrical issue, not overheating.
• Factors like a flooded street or a faulty ECU can also trigger false warnings, impacting the temperature sensor’s signal.
• Water interference in the “Jump Wire” to the starter or a shaky water pump could cause starting problems.
• A faulty battery, susceptible wiring, and defective wires can lead to transmission over temperature warnings.
• Examine wires for rotting covers and pinched harnesses behind the fuse box to prevent shortages.
• Ensure the main wire from the battery and the battery’s primary power supply are in good condition.
• Regularly check and maintain your battery to prevent starting problems and dash light malfunctions.

Read also: Stop Start Not Ready Engine Temperature Too Low

What Can You Do to Fix the Jeep Commander Transmission Over Temperature Issue?

If you’re facing a Transmission Over Temperature issue in your Jeep Commander, here are some simple steps you can take to address the problem:

Change the Transmission Fluid

Regularly changing your transmission fluid helps maintain optimal temperatures and prevent overheating.

To check your transmission, dip the stick in the fluid, wipe it on a clean cloth, and look at the color. If it’s red, everything’s good. If it’s brown or burnt red, your transmission is overheating. Change the fluid right away.

Change the Sensor

A faulty temperature sensor can cause issues. Consider replacing it to ensure accurate readings.

If you see a broken fluid temperature sensor, replace it. The sensor is on the passenger side of the transmission and costs around $80. If the “transmission over temperature” message goes away, your problem is fixed.

Check for Leaks

Transmission fluid leaks can contribute to overheating. Inspect for and fix any leaks promptly. Check if the cooling system and transmission are getting too hot. If you notice fluid loss, there might be a leak or a more serious issue. Find where the leak is coming from if your transmission fluid is low.

Change the Seals

Worn-out seals can lead to fluid leaks. Changing them helps maintain proper fluid levels.

The pump and seals for the input and output shafts can fail when the transmission fluid level is very low. You must remove the transmission and replace all the seals simultaneously to fix this issue.

Clean and Lubricate the Starter Connection

A clean and well-lubricated starter connection ensures smooth functioning, reducing strain on the transmission. Locate your car’s starter and check the connector plate. Remove any dirt or sand causing corrosion. 

Spray electrical cleaner on it to prevent further corrosion. If the problem persists, consider replacing the starter to fix the issue.

Test Your Batteries

Weak batteries can impact the electrical system. Ensure your batteries are in good condition.

Batteries that are dead or not working well can cause various error codes. 

The best thing to do is to test the battery’s load and check the alternator. Clean the connections on the batteries by cleaning the posts and terminals.

Fix Any Low-Voltage Issues

Low voltage can affect sensor performance. Address any low-voltage issues promptly. Low voltage can lead to incorrect codes in the PCM, making you spend time fixing things that aren’t really broken. 

Address weak battery or parasitic drain problems and ensure there are no issues with low voltage.

Ensure a good connection.

Secure and clean electrical connections are vital. Ensure a good connection for optimal performance. Check the transmission temperature switch, ECU, and ABS connectors by pulling them out and inspecting for corrosion. 

Clean the connectors with electronic cleaner, apply dielectric grease, and firmly push each wire back in for good contact. Also, inspect any damaged wires sticking out of the fuse box.

Use High-Performance Transmission Fluid

High-performance transmission fluid can better handle heat, reducing the risk of overheating. Sometimes, it might seem odd, but changing the transmission fluid type can be necessary. 

Use a high-performance transmission oil when making the switch. When I changed the oil in my Jeep, which had similar issues, the problems disappeared.

Reset PCM

Resetting or replacing the Powertrain Control Module (PCM) can help resolve electronic issues.

If the car’s computer (PCM) isn’t working properly, reset it. If that doesn’t solve the problem, consider replacing the PCM.

Replace Key Ignition

A malfunctioning key ignition can contribute to electrical problems. Consider replacing it if needed. Even though my ignition was part of a recall, I fixed the problem by changing the whole key ignition assembly. The same thing could happen to you.

Check for Software Recalls

Stay updated on software recalls and address any related issues promptly. If your car has trouble starting, requires multiple attempts to turn the key for the temperature light to appear, or encounters errors when using a four-wheel drive, it might have software problems. 

If a false warning light appears due to these issues, visit the dealer to check for any software recalls. The dealer addresses these recalls without any cost to you.

Flash the Computer and Update the Software

Flashing the computer and updating software can improve overall system performance. To fix the issue, reset the onboard computer by restoring factory settings through “flashing.” Additionally, update the software. 

This solution costs less than $100. If your Jeep won’t start, it’s advisable to replicate the problem at the dealer, as troubleshooting becomes challenging if the issue can’t be duplicated.

What Should You Do to Avoid Having an Overheated Transmission?

To prevent transmission over temperature issues, follow these proactive steps:

The key is to take care of your fluid to stop your transmission from getting too hot. Here are a few simple steps to keep your transmission from overheating:

Check the Fluid

Regularly check your transmission fluid, paying attention to its color. If it smells burnt, replace the fluid promptly to avoid additional damage. Follow Jeep’s maintenance schedule for a lasting and healthy transmission.

Change the Fluid Regularly

Routine fluid changes help maintain proper functioning and prevent overheating. Change the transmission fluid every 50,000 to 100,000 kilometers. If you carry heavy loads, travel long distances, or drive in hot weather, change it more often. This helps keep your transmission in good shape.

Make Sure It’s Full

Ensure the transmission fluid is at the recommended level. Your transmission gets too hot when there isn’t enough fluid to transfer heat properly. Check the fluid level regularly using the dipstick. If the dipstick shows less fluid than expected, it often means a problem.

External Transmission Cooler

Consider installing an external transmission cooler for added heat dissipation. If you follow the user guidelines, you may not require an extra transmission fluid cooler. 

However, installing one can be beneficial, especially when towing heavy loads. The cooler effectively reduces the temperature, cools the fluid, and is easy to set up.

Maintain the Car’s Cooling System

Regularly check and maintain the cooling system to prevent overheating issues. Make sure to maintain your radiator. It lets coolant flow through metal fins, releasing heat into the air to cool down. Also, check that your thermostat is open and not closed.

Maintain Routine Checkups

Regular vehicle checkups can catch potential issues before they escalate. Inspect your starter, PCM, and battery regularly, especially if you’re driving an older car.

Pros and Cons of Jeep Commander Transmission Over Temp Problem

Encountering a Jeep Commander Transmission Over Temperature Problem has positive and negative aspects. On the positive side, promptly identifying and addressing the issue can prevent severe damage and the need for costly repairs. 

However, on the downside, addressing the problem may incur repair expenses, and there is a potential risk of reducing the overall lifespan of the transmission. 

Here’s a simple table summarizing the pros and cons:

Pros	Cons
Early detection prevents major damage	Potential repair expenses
Timely solutions prevent costly repairs	Risk of reduced transmission lifespan

FAQs

What does it mean when it says transmission over temperature?  

When your vehicle displays a “transmission over temp” warning, the transmission has exceeded its optimal temperature range. This can lead to potential damage, and immediate action is needed to prevent further issues.

How do I stop my transmission from overheating?  

To prevent transmission overheating, ensure your vehicle has the correct amount of transmission fluid, fix any leaks promptly, install an external transmission cooler, and maintain the cooling system. Avoid towing heavy loads continuously, and consider using high-performance transmission fluid.

What is the transmission temperature warning light on a Jeep?

The transmission temperature warning light on a Jeep indicates that the transmission fluid has reached a temperature outside the recommended range. It serves as a cautionary signal to address the issue promptly to avoid potential damage to the transmission.

How do I lower my transmission temperature?

• To lower the transmission temperature, you can:
• Allow your vehicle to cool down by pulling over and turning off the engine.
• Check and address low transmission fluid levels.
• Install an external transmission cooler for improved heat dissipation.
• Avoid heavy towing and driving in extreme conditions.
• Ensure proper maintenance of the cooling system.

Final Words

By taking these simple preventive measures and addressing issues promptly, you can keep your Jeep Commander’s transmission running smoothly and avoid the hassle of overheating problems.

If your transmission gets too hot, it can lead to costly repairs and shorten lifespan. Low transmission fluid is the main reason for overheating, but issues with the temperature sensor, starter, PCM, or battery can also cause it. 

Taking immediate action and addressing these problems can help you locate and fix the issue before it becomes a major repair.

Like an overheating engine, letting your Jeep Commander’s transmission get too hot can harm it. Learn about the signs and causes of an overheating transmission to prevent damage.