This guide walks you through how to reset the check engine light on a 2013 Jeep Patriot using simple methods like driving cycles, OBD2 scanners, and battery disconnects. Always diagnose the root cause first to avoid recurring issues.
Key Takeaways
- Diagnose the problem first: Use an OBD2 scanner to read trouble codes before resetting the light. Ignoring the underlying issue can lead to engine damage or failed emissions tests.
- Try a drive cycle: After fixing the issue, complete a specific driving pattern (city and highway) to allow the vehicle’s computer to recheck systems and turn off the light automatically.
- Use an OBD2 scanner for quick resets: Plug in a scanner, clear the codes, and verify the light is off. This is the most reliable method for most DIYers.
- Battery disconnect works—but has downsides: Disconnecting the battery for 10–15 minutes can reset the light, but it may also erase radio settings, trip data, and adaptive learning.
- Check gas cap first: A loose or faulty gas cap is a common cause of the check engine light on Jeeps. Tighten or replace it before trying other fixes.
- Monitor after reset: Drive for a few days and watch for the light to return. If it does, the problem wasn’t fully resolved.
- Seek professional help if needed: Complex issues like catalytic converter or oxygen sensor problems require expert diagnosis and repair.
How to Reset Check Engine Light on 2013 Jeep Patriot
If you’ve noticed the dreaded check engine light glowing on your 2013 Jeep Patriot’s dashboard, you’re not alone. It’s one of the most common concerns for Jeep owners—and for good reason. That little orange or yellow light can signal anything from a loose gas cap to a serious engine malfunction. But once you’ve identified and fixed the problem, the next step is resetting the light so your Jeep runs smoothly and passes inspections.
In this comprehensive guide, you’ll learn how to reset the check engine light on a 2013 Jeep Patriot using safe, effective methods. We’ll cover everything from simple fixes like tightening the gas cap to using advanced tools like OBD2 scanners. You’ll also discover troubleshooting tips, common mistakes to avoid, and when it’s time to visit a mechanic.
Whether you’re a seasoned DIYer or a first-time car owner, this step-by-step guide will help you take control of your vehicle’s health—without unnecessary trips to the dealership.
Why the Check Engine Light Comes On
Visual guide about How to Reset Check Engine Light on 2013 Jeep Patriot
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Before jumping into reset methods, it’s important to understand why the check engine light appears in the first place. The 2013 Jeep Patriot uses an onboard diagnostic system (OBD2) to monitor engine performance, emissions, and other critical systems. When something goes wrong—like a sensor failure, fuel system issue, or exhaust problem—the computer triggers the check engine light to alert you.
Common causes include:
- A loose or damaged gas cap
- Faulty oxygen (O2) sensor
- Misfiring engine
- Catalytic converter issues
- Mass airflow (MAF) sensor problems
- Spark plug or ignition coil failure
Ignoring the light can lead to reduced fuel efficiency, increased emissions, and even engine damage over time. That’s why diagnosing the root cause is the first and most crucial step.
Step 1: Diagnose the Problem First
You should never reset the check engine light without knowing why it came on. Doing so is like turning off a fire alarm while the house is still burning—it doesn’t fix the problem.
Use an OBD2 Scanner to Read Trouble Codes
The best way to diagnose the issue is by using an OBD2 scanner. These devices plug into your Jeep’s diagnostic port (usually under the dashboard, near the steering wheel) and read the trouble codes stored in the vehicle’s computer.
Here’s how:
- Turn off the engine and locate the OBD2 port. In the 2013 Jeep Patriot, it’s typically on the driver’s side, below the steering column.
- Plug in your OBD2 scanner. Most models power up automatically when connected.
- Turn the ignition to the “ON” position (but don’t start the engine).
- Follow the scanner’s instructions to retrieve the trouble codes. These will appear as alphanumeric codes like P0455 or P0171.
- Write down the codes and look them up online or in the scanner’s manual to understand what they mean.
For example:
- P0455: Large evaporative emission leak—often caused by a loose gas cap.
- P0171: System too lean (bank 1)—could indicate a vacuum leak or faulty MAF sensor.
- P0300: Random/multiple cylinder misfire—may point to bad spark plugs or ignition coils.
Once you know the cause, you can fix it properly. Only then should you consider resetting the light.
Check the Gas Cap (The Most Common Fix)
Before spending money on tools or repairs, check the gas cap. It’s the simplest and most overlooked solution.
Here’s what to do:
- Turn off the engine and open the fuel door.
- Unscrew the gas cap and inspect it for cracks, wear, or a damaged seal.
- Tighten it firmly until you hear it click 3–5 times.
- If the cap looks damaged, replace it with an OEM or high-quality aftermarket cap.
After tightening or replacing the cap, drive your Jeep for 50–100 miles. The check engine light may turn off on its own after the system confirms the fix.
Step 2: Try a Drive Cycle to Reset the Light
If you’ve fixed the issue—like tightening the gas cap or replacing a sensor—the vehicle’s computer may reset the light automatically after a “drive cycle.” A drive cycle is a specific pattern of driving that allows the onboard computer to retest all monitored systems.
What Is a Drive Cycle?
A drive cycle mimics real-world driving conditions, including cold starts, city driving, highway speeds, and deceleration. The 2013 Jeep Patriot’s computer needs to complete several of these tests to confirm the problem is resolved.
Recommended Drive Cycle for 2013 Jeep Patriot
Follow these steps to complete a full drive cycle:
- Start the engine when it’s cold (hasn’t been run for at least 8 hours).
- Let it idle for 2–3 minutes.
- Drive at 25–35 mph for 3–5 minutes with moderate acceleration.
- Accelerate to 55–65 mph and maintain speed for 5–10 minutes.
- Decelerate gradually without braking hard (to test the catalytic converter).
- Drive in stop-and-go traffic for 10–15 minutes.
- Park and turn off the engine.
Repeat this cycle 2–3 times over a few days. Afterward, check if the light is off. If it is, great! The system has confirmed the repair.
Tips for Success
- Avoid short trips—they don’t allow the computer to complete all tests.
- Don’t disconnect the battery during this process—it resets the drive cycle.
- Use a scanner to check “monitor status” and see which tests have passed.
Step 3: Use an OBD2 Scanner to Clear the Codes
If the light hasn’t turned off after a drive cycle, the fastest and most reliable way to reset it is by using an OBD2 scanner.
How to Clear Codes with a Scanner
Follow these steps:
- Plug the scanner into the OBD2 port (same location as before).
- Turn the ignition to “ON” (engine off).
- Navigate the menu to “Read Codes” or “View DTCs” to confirm the issue is fixed.
- Select “Clear Codes” or “Erase DTCs.” Confirm the action when prompted.
- Wait for the scanner to confirm the codes are cleared.
- Turn off the ignition and unplug the scanner.
After clearing the codes, start the engine. The check engine light should be off. If it comes back on immediately, the problem may still exist.
Recommended OBD2 Scanners
For DIY use, consider these affordable and user-friendly options:
- BlueDriver Bluetooth Pro: Works with smartphones, provides detailed reports, and offers repair suggestions.
- Autel MaxiCOM MK808: Advanced features, great for frequent use.
- Innova 3160g: Easy to use, includes code lookup and live data.
Most scanners cost between $30 and $150. They’re a worthwhile investment if you plan to maintain your Jeep yourself.
Step 4: Disconnect the Battery (Alternative Method)
If you don’t have a scanner, you can reset the check engine light by disconnecting the battery. This method forces the vehicle’s computer to reset, clearing stored codes and turning off the light.
How to Disconnect the Battery
Follow these steps carefully:
- Turn off the engine and remove the key.
- Open the hood and locate the battery (on the driver’s side).
- Use a wrench to loosen the negative (-) terminal clamp.
- Remove the negative cable and tuck it away from the battery post.
- Wait 10–15 minutes. This allows the computer’s memory to fully discharge.
- Reconnect the negative cable and tighten the clamp securely.
- Close the hood and start the engine.
After reconnecting, the check engine light should be off. However, be aware of the downsides.
Downsides of Battery Disconnection
- Radio presets and clock settings may reset.
- Trip computer data (like average MPG) will be lost.
- The engine may run rough for a few minutes as the computer relearns fuel trims.
- Some systems (like power windows or sunroof) may need to be recalibrated.
This method works, but it’s less precise than using a scanner. It’s best used as a last resort.
Step 5: Monitor the Vehicle After Reset
Resetting the light is only half the battle. You must ensure the problem doesn’t return.
What to Watch For
- Does the check engine light come back on within a few days?
- Is the engine running smoothly, or do you notice misfires, hesitation, or poor fuel economy?
- Are there any new warning lights (like the emissions or traction control light)?
If the light returns, the issue wasn’t fully resolved. Use your OBD2 scanner to read the new codes and investigate further.
Keep a Maintenance Log
Consider keeping a simple log of repairs, codes, and reset attempts. This helps track patterns and makes future diagnostics easier.
Example:
- Date: 04/10/2024
- Code: P0455
- Action: Replaced gas cap
- Reset Method: Drive cycle
- Result: Light off after 3 days
Troubleshooting Common Issues
Even after following all steps, you might run into problems. Here’s how to handle them.
The Light Comes Back On Immediately
If the check engine light returns right after resetting, the problem is still active. Possible causes:
- The repair wasn’t completed correctly (e.g., gas cap not fully tightened).
- A sensor is faulty and needs replacement.
- There’s an intermittent issue (like a loose wire or vacuum leak).
Use your scanner to read the code again. If it’s the same, double-check your repair. If it’s different, diagnose the new issue.
The Scanner Won’t Connect
If your OBD2 scanner won’t power up or connect:
- Check the fuse for the OBD2 port (usually in the interior fuse box).
- Ensure the ignition is in the “ON” position.
- Try a different scanner or smartphone app (for Bluetooth models).
- Inspect the OBD2 port for dirt or damage.
The Light Won’t Turn Off After a Drive Cycle
If the light remains on after a proper drive cycle:
- The issue may require a longer or more complex drive pattern.
- Some monitors (like the catalytic converter test) take multiple cycles to complete.
- Use a scanner to check which monitors are “ready” or “not ready.”
If most monitors are ready but the light is still on, the problem may be minor. If many are not ready, continue driving and retest.
When to See a Mechanic
While many check engine light issues can be handled at home, some require professional help.
Seek a mechanic if:
- The light is flashing (indicates a severe misfire that can damage the catalytic converter).
- You’re getting codes related to the transmission, ABS, or airbags.
- The engine is running poorly, overheating, or making unusual noises.
- You’ve tried multiple fixes and the light keeps returning.
A certified technician can perform advanced diagnostics, smoke tests for leaks, and component testing that DIY tools can’t match.
Preventing Future Check Engine Light Issues
An ounce of prevention is worth a pound of cure. Keep your 2013 Jeep Patriot in top shape with these tips:
Regular Maintenance
- Change the oil and filter every 5,000–7,500 miles.
- Replace spark plugs and ignition coils as recommended (usually every 60,000–100,000 miles).
- Inspect and clean the MAF sensor periodically.
- Use high-quality fuel and consider fuel system cleaners every 10,000 miles.
Check the Gas Cap Every Fill-Up
Make it a habit to ensure the gas cap is tight after every refuel. A loose cap is the #1 cause of false check engine lights.
Use a Scanner Periodically
Even if the light isn’t on, use your OBD2 scanner every few months to check for pending codes or monitor status. This helps catch issues early.
Conclusion
Resetting the check engine light on your 2013 Jeep Patriot doesn’t have to be stressful or expensive. By following this guide, you’ve learned how to diagnose the problem, fix common issues, and reset the light using drive cycles, OBD2 scanners, or battery disconnection.
Remember: Always address the root cause first. Resetting the light without fixing the issue is like putting a bandage on a broken bone. Use the right tools, monitor your vehicle, and don’t hesitate to seek professional help when needed.
With a little knowledge and the right approach, you can keep your Jeep running smoothly, pass emissions tests, and enjoy peace of mind on the road.