How To Reset Flat Tire Warning Infiniti Q50

So, your Infiniti Q50 is showing that pesky "Low Tire Pressure" or "Flat Tire Warning" light. Don't panic! It's a common occurrence, and often easily fixed. This article will guide you through the process of resetting the tire pressure monitoring system (TPMS) on your Q50, saving you a trip to the mechanic and ensuring accurate tire pressure readings.

Why Resetting Your Infiniti Q50 TPMS Matters

The Tire Pressure Monitoring System, or TPMS, is a crucial safety feature in your Infiniti Q50. It constantly monitors the air pressure in your tires and alerts you if the pressure drops below a safe level. Driving with underinflated tires can lead to several problems:

• Reduced Fuel Efficiency: Underinflated tires increase rolling resistance, forcing your engine to work harder and burn more fuel.
• Uneven Tire Wear: Improper inflation leads to uneven wear patterns, shortening the lifespan of your tires.
• Compromised Handling: Low tire pressure affects your car's handling and braking performance, especially in wet or emergency situations.
• Increased Risk of Blowouts: Underinflated tires are more susceptible to overheating and blowouts, posing a serious safety hazard.

Sometimes, the TPMS light illuminates even when your tire pressure is actually correct. This can happen due to temperature fluctuations, a recent tire inflation, or a sensor malfunction. Resetting the system allows it to recalibrate and provide accurate readings.

Step-by-Step Guide to Resetting Your Infiniti Q50 TPMS

Here's a detailed guide on how to reset the TPMS in your Infiniti Q50. There are a few methods, so we'll cover the most common and effective ones:

Method 1: The Driving Method (Auto-Learning)

This method relies on the Q50's auto-learning capabilities and is often the simplest approach. Important: Ensure all your tires are inflated to the correct pressure as indicated on the sticker inside your driver's side door before attempting this method.

1. Inflate Tires to Recommended Pressure: Using a reliable tire pressure gauge, inflate each tire to the pressure specified on the sticker located on the driver's side doorjamb. Don't rely solely on the gas station's air pump gauge, as they can be inaccurate.
2. Start Your Infiniti Q50: Turn the ignition to the "ON" position without starting the engine. Then, start the engine.
3. Drive for 10-20 Minutes: Drive your Q50 at a speed of at least 25 mph (40 km/h) for a continuous 10-20 minutes. This allows the TPMS sensors to communicate with the car's computer and recalibrate. A relatively straight road with minimal stops is ideal.
4. Monitor the TPMS Light: As you drive, keep an eye on the TPMS warning light. It may turn off automatically during the driving process, indicating that the system has successfully reset.
5. If the Light Persists: If the light remains on after driving for 20 minutes, try driving for another 10-15 minutes. If it still doesn't turn off, proceed to Method 2.

Method 2: Using the Infiniti Q50's Vehicle Information Display

This method utilizes the Q50's onboard computer to reset the TPMS. The exact steps may vary slightly depending on the year and trim of your Q50, but the general process is similar.

1. Inflate Tires to Recommended Pressure: As with Method 1, ensure all tires are properly inflated.
2. Start Your Infiniti Q50: Turn the ignition to the "ON" position without starting the engine. Then, start the engine.
3. Access the Vehicle Information Display: Navigate to the "Settings" or "Maintenance" menu on the vehicle information display (usually located between the speedometer and tachometer). Use the steering wheel-mounted controls to scroll through the options.
4. Find the TPMS Reset Option: Look for an option labeled "TPMS Reset," "Tire Pressure Calibration," or something similar. The exact wording may vary.
5. Initiate the Reset: Select the TPMS reset option and follow the on-screen prompts. You may be asked to confirm your selection.
6. Drive for a Short Period: After initiating the reset, drive your Q50 for a short distance (usually a few minutes) at a speed above 25 mph (40 km/h). This allows the system to learn the new tire pressure readings.
7. Monitor the TPMS Light: Observe the TPMS light. It should turn off after the system has successfully recalibrated.

Method 3: Disconnecting the Battery (Use with Caution)

This method is a last resort and should only be attempted if the previous methods fail. Disconnecting the battery can reset various electronic systems in your car, including the TPMS. Important: Disconnecting the battery can also erase stored radio presets and other settings. Proceed with caution.

1. Inflate Tires to Recommended Pressure: Ensure all tires are properly inflated.
2. Locate the Negative Battery Terminal: Open the hood and locate the negative (-) battery terminal. It's usually marked with a minus sign and a black cable.
3. Disconnect the Negative Battery Terminal: Using a wrench, loosen the nut on the negative battery terminal and carefully disconnect the cable.
4. Wait 15-30 Minutes: Allow the car to sit for 15-30 minutes. This allows the electronic systems to fully discharge and reset.
5. Reconnect the Negative Battery Terminal: Reconnect the negative battery cable and tighten the nut securely.
6. Start Your Infiniti Q50: Start the engine.
7. Drive for a Short Period: Drive your Q50 for a short distance at a speed above 25 mph (40 km/h).
8. Monitor the TPMS Light: Observe the TPMS light. It should turn off after the system has recalibrated.

Choosing the Right Method

Start with Method 1 (the driving method). It's the simplest and least intrusive. If that doesn't work, try Method 2 (using the vehicle information display). Only resort to Method 3 (disconnecting the battery) if the other methods fail. Remember to always prioritize safety and consult your owner's manual for specific instructions related to your Infiniti Q50's model year and trim.

Real-World Owner Experiences

Many Infiniti Q50 owners have reported success with the driving method. Some have found that driving at a slightly higher speed (e.g., 35 mph) helps the system recalibrate faster. Others have noted that the vehicle information display method is particularly effective for resetting the TPMS after replacing tires or sensors. However, a few owners have encountered persistent issues and needed to consult a mechanic for further diagnosis. It's crucial to ensure your sensors are properly functioning. Consider purchasing a TPMS diagnostic tool for home use if you anticipate frequent tire maintenance.

Troubleshooting Tips

• Check the Tire Pressure Sensors: If the TPMS light continues to illuminate after resetting the system, one or more of the tire pressure sensors may be faulty. A diagnostic scan tool can help identify which sensor is malfunctioning.
• Inspect for Tire Damage: Carefully inspect your tires for any signs of damage, such as punctures, cuts, or bulges. Even a small leak can cause a gradual loss of pressure, triggering the TPMS light.
• Consider Temperature Fluctuations: Tire pressure decreases as the temperature drops. A sudden drop in temperature can cause the TPMS light to illuminate. Inflate your tires accordingly.
• Check for Obstructions: Ensure that there are no obstructions (e.g., debris) near the TPMS sensors.

Frequently Asked Questions (FAQs)

Q: How often should I check my tire pressure?

A: It's recommended to check your tire pressure at least once a month and before any long trips.

Q: What is the correct tire pressure for my Infiniti Q50?

A: The recommended tire pressure is listed on the sticker located on the driver's side doorjamb. It's usually around 33-35 PSI.

Q: Can I drive with the TPMS light on?

A: It's not recommended to drive with the TPMS light on, as it indicates that one or more of your tires may be underinflated. This can compromise safety and fuel efficiency. Address the issue as soon as possible.

Q: How much does it cost to replace a TPMS sensor?

A: The cost of replacing a TPMS sensor can vary depending on the make and model of your car, as well as the labor costs at your chosen repair shop. Typically, expect to pay between $50 and $150 per sensor, including installation.

Q: Do I need to reset the TPMS after replacing my tires?

A: Yes, it's essential to reset the TPMS after replacing your tires to ensure that the system accurately reads the new tire pressures.

Q: My TPMS light is flashing. What does that mean?

A: A flashing TPMS light usually indicates a problem with the TPMS system itself, such as a faulty sensor or a communication issue with the car's computer. It's best to consult a mechanic for diagnosis and repair.

By following these steps and tips, you should be able to successfully reset the TPMS on your Infiniti Q50 and ensure accurate tire pressure readings, promoting safety and optimal performance.