545RFE Transmission Problems and Reasons Why It Can Fail

The RFE transmission is an electronically controlled automatic transmission system introduced by Chrysler in 1999. It saw a wide range of applications due to its reliability during its production run, and it had durability that made it stand out from the competition. Among its versions is the 545RFE, which we will be covering here.

545RFE transmission highlights

• Average lifespan:200,000-220,000 miles
• Reliability Score:High
• Prone to minor issues:Seldom
• Price for repair after failure:$1,000-$1,300
• Price for replacement:$3,200-$4,800
• Availability of parts:Average
• Common problems: Pump issues, friction plates aren't eternal, solenoids unit issues, control system problems.

Most Common 545RFE Transmission Problems

It's been more than a decade since the production of the 545RFE ceased. So, from its first model in 2001, many issues have been linked with the transmission system.

Based on complaints, reviews, and reports about the 545RFE, here are the problems that it is most prone to:

1. Transmission Overheating

The 545RFE transmission is designed to work with a variety of engines, including gas and diesel. However, it can overheat if it is not properly maintained. Some symptoms that may indicate that the transmission is overheating such as the engine running hot, the transmission slipping out of gear, the vehicle hesitating when accelerating, and the activation of the check engine light.

There are a lot of factors that can lead to overheating in the transmission but the most common to the 545RFE are excessive towing or hauling, insufficient fluid level, poor fluid quality in the transmission, clogged cooling system, faulty transmission cooler lines, leaks, or damage in the radiator.

The solution to the issue regarding excessive towing or hauling is self-explanatory, which you can easily prevent by simply changing your driving habits. Likewise, you can easily fill your car's transmission fluid if it's low.

Meanwhile, the dirty transmission fluid in your car's reservoir will have to be flushed and filled with a fresh batch. This requires more effort to accomplish, so it's best to just leave the job to your trusted mechanic.

As for the clogging problem, there are places where they usually occur in your transmission system. The most common is the transmission filter. The filter can become congested with dirt and debris over time, which can restrict the continuous flow of fluid and cause problems.

Another common place for clogs is in the transmission cooler. The cooler is responsible for keeping the fluid cool, and if it becomes restricted by dirt, it can cause the fluid to overheat. This can lead to serious damage to the transmission.

If you suspect that your transmission system is starting to become clogged, it's important to have it checked out by a qualified mechanic as soon as possible. In most cases, the solution will only involve cleaning the system if no parts have been corroded, but a worn filter will surely have to be changed with a new one.

For a faulty cooler line, there are a few things that can be done to fix it. Depending on the severity of the issue, your mechanic may only flush the cooler and clean it out. If the issue is more serious, the cooler line may have to be replaced.

Lastly, if the problem has been traced to a leak in your radiator, your mechanic may only apply a sealant to repair the damage. If your radiator has blown though, the only way around is to replace it.

If the transmission overheats, it is important to take care of the problem immediately. Continuing to drive with an overheated transmission can cause serious damage to the engine and transmission. Ignoring the issue further can even result in a fire that can render your vehicle totally inoperable or a complete wreck.

2. Solenoid Switch Pack Malfunction

When the solenoid switch pack in the 545RFE transmission malfunctions, it can cause a number of issues with the car. The most common symptom is that the vehicle will not shift gears properly. The transmission may get stuck in one gear or may slip between gears. This can make driving the car very difficult and can even be dangerous.

There are a few possible causes of this problem. One possibility is that there is simply debris or dirt in the solenoid pack that is preventing it from working properly. Another is that one or more of the solenoids in the pack has failed and needs to be replaced.

The best way to solve this problem is to take the car to a qualified mechanic who can diagnose the exact cause and then fix it. Trying to fix the problem yourself without proper training and experience is not recommended as it could make the problem worse.

3. Malfunctioning Gears

One of the most common issues with the 545RFE transmission is that it can fail to engage properly due to worn gears. So, if your transmission is failing to engage, it's important to have the gears diagnosed and repaired by a qualified mechanic as soon as possible.

The mechanic will be able to determine whether the gears will only need calibration or replacement. Sometimes, the fix may only involve adjustment of the gears to their correct alignment or positioning to optimize the performance of the transmission.

In cases where they have been damaged, they will have to be replaced. Now, if the situation has turned from bad to worse wherein the problematic gears have resulted in major damage to the other moving components of your transmission, it may require rebuilding the system or replacement of the entire thing.

4. Valve Body Issues Causing Shift Delay in Higher Gears

One issue that can cause shift delay in the higher gears of the 545RFE transmission is a problem with the valve body. The valve body is responsible for controlling the flow of hydraulic fluid to the various parts of the transmission. If there is a problem with the valve body, it can cause a delay in shifting into higher gears.

This issue normally manifests at the third gear or above. Aside from the shift delay, it could also result in harsh shifts coupled with strong vibrations and noises coming from the transmission.

To diagnose this problem, you will need to check the pressure of the hydraulic fluid. If the pressure is low, there is likely a problem with the valve body. There are several ways to fix this problem, including replacing or repairing the valve body. You will need to consult a qualified mechanic to determine the best course of action for your particular situation.

Common Reasons Why the 545RFE Transmission Can Fail

Let's take a look at the most common reasons why the 545RFE transmission can fail. These are:

1. Regular Wear and Tear

Over time, time will eventually catch up with your car components. So, the 545RFE transmission will ultimately fail due to the accrued effects of normal wear and tear.

2. Neglect or Abuse from Users

If the vehicle equipped with the 545RFE transmission is neglected, left to sit in the garage for too long, or frequently subjected to harsh driving conditions, it can significantly speed up the wear of its parts, which can lead to transmission failure.

3. Lack of Maintenance

Missing out on regular maintenance after frequent use can lead to the quick wear of the components of the 545RFE transmission, which can also lead to its malfunction.

4. Others

Other factors can contribute to the failure of the 545RFE transmission, such as substandard replacement parts, original factory defects, and issues arising from the rebuilding process.

Maintenance Tips for the 545RFE Transmission

If you have a 545RFE transmission, it's important to keep it properly maintained. Here are some tips on how to do that:

• Check the fluid level regularly and top it off if necessary.
• Use the correct type of fluid. The 545RFE requires a special synthetic transmission fluid.
• Have the transmission serviced at the recommended intervals. This will include changing the fluid and filter, as well as inspecting the transmission for any wear or damage.
• Be careful not to overheat the transmission. If you notice the transmission temperature getting too hot, stop driving and have it checked out as soon as possible.
• Avoid hard shifts and sudden stops. These can put unnecessary stress on the transmission and lead to premature wear.

By following these simple tips, you can help keep your 545RFE transmission in good condition and prolong its life.

Conclusion

When it comes to your 545RFE transmission, make sure that you're doing everything possible to maintain its quality. After all, this is a vital component of your vehicle, and if it isn't working properly, it can cause all sorts of problems like the ones presented here.

Therefore, it is of utmost importance that you take care of any problem that may arise without procrastinating to add more mileage to your transmission and ensure your auto's best running condition in the years to come.