The Jeep Grand Cherokee is known for its innovative features and convenience, with the remote start system being one of the most popular. However, like any technological enhancement, it may sometimes fail to operate correctly. If you’ve found yourself standing outside your vehicle, remote in hand, only to discover that your remote start isn’t working, you’re not alone. This article will look into common causes for this issue, troubleshooting steps, and preventative measures to ensure your Jeep’s remote start works flawlessly in the future.
Understanding the Remote Start System in Jeep Grand Cherokee
Before diving into troubleshooting, it’s important to understand how the remote start system works in your Jeep Grand Cherokee.
The remote start feature allows you to start the engine from a distance, typically up to 300 feet away. This system is especially beneficial in extreme weather conditions, enabling you to heat up or cool down your vehicle before stepping inside. The remote start mechanism utilizes the vehicle’s key fob, which sends a signal to the car’s computer via radio frequency.
There are some critical components involved in making this feature function properly:
- Key Fob: Acts as the primary remote control.
- Body Control Module (BCM): Processes signals from the key fob.
- Engine Control Module (ECM): Manages engine operation.
- Transponder system: Ensures only the registered key fob can start the vehicle.
A fundamental understanding of these elements will help you navigate the situation when the remote start isn’t functioning as expected.
Common Causes of Remote Start Failure
Several factors may lead to your Jeep Grand Cherokee’s remote start feature becoming unresponsive. Recognizing these causes is the first step towards fixing the issue. Here are the most common culprits:
1. Dead or Weak Key Fob Battery
One of the most frequent reasons behind remote start failure is a depleted battery in the key fob. If the remote start isn’t working but other functions (like locking and unlocking doors) are, this might be the issue.
2. Vehicle Security System Engaged
If your vehicle’s security system is triggered, it may prevent the remote start from functioning. If your Jeep has registered unauthorized entry attempts, it might lock you out of remote start capabilities as a safety measure.
3. Door AJar or Malfunctioning Sensors
The remote start feature is designed to only operate when all doors are closed and the vehicle is in park. If the sensors indicate that a door is ajar or faulty, the remote start won’t engage.
4. Weak Receiver Signal
The remote start system requires clear communication between the fob and the vehicle. If there are nearby electronic devices emitting strong signals or if you’re too far from the vehicle, the remote start function may not work.
5. Software Issues
Like any electronic system, the software that runs your Jeep’s remote start could have bugs or glitches. Sometimes a simple software update can resolve the issue.
Troubleshooting Steps for Remote Start Malfunction
If you’re experiencing issues with your remote start, consider following these troubleshooting steps to identify and possibly resolve the issue.
Step 1: Check the Key Fob Battery
- Start by replacing the battery in your key fob. The procedure is straightforward:
- Locate the small seam along the fob.
- Use a small flathead screwdriver to gently pry apart the fob.
- Replace the old battery with a new one. Developers usually recommend CR2032 batteries.
- Reassemble the key fob.
After replacing the battery, try using the remote start again. If it functions, you have resolved the issue. If not, proceed to the next step.
Step 2: Verify Door Status
Ensure all doors are completely closed and that no items inside are preventing them from shutting properly. Pay extra attention to:
- The hood
- The trunk
Using another person as an assistant can help you quickly verify if the vehicle reacts to the doors being activated.
Step 3: Examine Security Settings
If you’re experiencing persistent issues, check if your Jeep’s security system has been triggered. Use the key fob to lock and unlock the vehicle. If you notice any unusual blinking indicators on the dashboard, consult your owner’s manual for guidance.
Step 4: Check for Software Updates
Your Jeep might require a software update, especially if there’s a known issue that has been addressed by the manufacturer. You can do this by visiting a local dealership or checking the manufacturer’s website for available updates.
Step 5: Inspect for Damage or Malfunction
If all else fails, inspect the vehicle itself. Look for wiring issues, particularly around the BCM and ECM. Water damage or wear and tear can cause malfunctions. Consider bringing your Jeep to a professional mechanic with expertise in the Jeep Grand Cherokee’s electronics to conduct an in-depth inspection.
Preventative Measures for Future Remote Start Issues
To avoid running into remote start problems in the future, consider the following preventative strategies:
Regular Maintenance
Schedule regular maintenance checks for your vehicle, focusing on the electrical systems, including the key fob and vehicle’s BCM. Changing your key fob battery every year can also be helpful.
Keep Fob in Good Condition
Ensure that your key fob is kept in good condition. Avoid dropping it and keep it dry to prevent moisture damage to the electronics inside.
Test Remote Start Periodically
Make it a habit to test the remote start feature a few times a month to catch any issues early. This kind of proactive approach can save you time and trouble in the long run.
Update Your Knowledge
Keeping yourself informed about any recalls, updates, or changes in your Jeep’s electronics will be beneficial. Always check forums or groups dedicated to Jeep Grand Cherokee owners for insights and experiences shared by fellow drivers.
When to Seek Professional Help
Sometimes, troubleshooting steps may not resolve the problem. In such cases, it’s crucial to know when to seek professional assistance:
Signs You Need a Mechanic
- If the remote start fails consistently after troubleshooting.
- Persistent warning lights or messages displayed on the dashboard.
- Unusual sounds or behaviors from your vehicle when attempting to start remotely.
Finding a professional with experience specifically with Jeep models can ensure that the problem is diagnosed correctly and efficiently.
Conclusion
The remote start system in your Jeep Grand Cherokee is a convenient feature that enhances your driving experience. However, issues can arise that may prevent it from functioning as intended. By understanding the common causes of remote start failure and following the troubleshooting steps outlined in this article, you can potentially resolve problems yourself. Remember to stay proactive in maintaining your vehicle and seeking professional help when necessary. A well-maintained remote start function will not only make your life easier but will also add value to your Jeep Grand Cherokee for years to come.
What are the common reasons why my Jeep Grand Cherokee’s remote start might not be working?
The remote start feature in your Jeep Grand Cherokee may fail due to several common issues. One of the most frequent reasons is the key fob battery being low or dead. If you notice that the range of your remote start has diminished, it’s a good idea to replace the battery in your key fob and test the system afterwards. Additionally, interference from other electronic devices can often disrupt the signal, so ensure you are in a location with minimal interference.
Another potential cause could be related to safety features and conditions that must be met for remote start to work properly. For example, if the vehicle’s doors are not completely closed or if there’s an issue with the hood sensor, the remote start will not engage. Similarly, if the vehicle’s transmission is not in “Park,” or if the brake pedal is pressed, the remote start function will be disabled. Checking all these conditions can often resolve the issue.
How can I reset my remote start system?
Resetting the remote start system in your Jeep Grand Cherokee may vary depending on the model year, but a common method involves disconnecting the vehicle battery. Start by turning off the ignition and removing the negative terminal of your battery. Wait for about 10 minutes before reconnecting it. This can sometimes clear any minor glitches in the system that may be preventing your remote start from working.
After reconnecting the battery, test the remote start function again. If it still doesn’t work, it might indicate a deeper issue that requires professional assistance. Always consult your owner’s manual for specific instructions tailored to your model, as some units have unique reset techniques or additional troubleshooting steps.
Is there a fuse related to the remote start that I should check?
Yes, there is typically a fuse linked to the remote start system in Jeep Grand Cherokees. If your remote start isn’t functioning, checking the fuses in the fuse box is a wise first step. Refer to your owner’s manual to locate the fuse specifically associated with the remote start feature, and visually inspect it for any signs of damage, such as a broken filament or discoloration.
If you find a blown fuse, replace it with one of the same amperage rating and then re-test the remote start function. If the new fuse blows again shortly after installation, it may indicate an underlying electrical issue that requires professional diagnosis to prevent further damage or unreliable performance.
What should I do if my key fob isn’t working for remote start?
If your key fob isn’t working for remote start, the first step is to check the battery within the fob. A dead or low battery can prevent the fob from sending signals to the vehicle. If necessary, replace the battery and ensure that you reassemble the fob correctly. After replacing the battery, try using the remote start function again to see if this resolves the issue.
If the key fob still isn’t functioning after a battery replacement, there may be a problem with the fob itself or the vehicle’s receiver. It may be necessary to reprogram the fob to the vehicle, which can often be done following specific steps found in the owner’s manual. If reprogramming doesn’t work, consulting with your dealership or a professional locksmith may be required to diagnose and resolve the issue.
Can I use my smartphone to start my Jeep Grand Cherokee remotely?
In many newer models of the Jeep Grand Cherokee, you can use the Jeep app on your smartphone to remotely start your vehicle, provided that the vehicle is compatible and connected to the internet. To use this feature, ensure your vehicle is equipped with the Uconnect system and that you have downloaded the appropriate app. Registration and pairing your vehicle with the app will be necessary for remote functionality.
If you are unable to connect your smartphone or have issues with the app, ensure that your mobile device has a reliable internet connection. Sometimes, updates to the app or the Uconnect system may be available, so checking for updates can resolve connectivity issues. If the app still fails to function after these steps, seeking assistance through Jeep’s customer service may provide additional solutions.
What are the safety conditions that need to be met for remote start to work?
To ensure the safe operation of the remote start feature in your Jeep Grand Cherokee, several safety conditions must be met. Firstly, the vehicle should be in “Park,” and all vehicle doors must be closed. This is crucial because the remote start feature is designed to prevent the engine from starting under unsafe conditions, thereby avoiding potential accidents.
Additionally, if the hood is not securely closed or if there is an issue with the brake pedal sensor, the remote start will remain inactive. Some models may also require that the vehicle be equipped with a functioning alarm system. Familiarizing yourself with these safety conditions can help you troubleshoot issues effectively and ensure that your remote start works as intended.