How To Remove Flat Tire Warning Infiniti Q50 | Make It Clear

The warning usually clears after all four tires are set to the door-label pressure and the car is driven above 16 mph.

If you need to know how to remove flat tire warning Infiniti Q50 owners see on the dash, start with the tires. On this car, the warning is usually tied to low pressure, a stored flat-tire event, or a TPMS fault. So the fix is rarely hidden in a menu. Most of the time, you set all four tires to the cold pressure on the driver’s door label, then drive long enough for the system to read the new numbers.

People get stuck when they add air to one tire only, fill the tires while they are hot, or skip the short drive after inflation. Some are also dealing with a different warning, like “Flat Tire – Visit dealer” or a flashing TPMS light. Once you sort those apart, the fix gets much clearer.

What The Infiniti Q50 Warning Usually Means

The Q50 can show a few tire warnings, and they do not all point to the same thing. One is the low tire pressure light, often paired with “Tire Pressure Low – Add Air.” Another is the flat-tire message on cars with run-flat tires. A third pattern is a light that flashes for about a minute at startup, then stays on.

A low-pressure warning often clears at home after the pressures are corrected. A flat-tire warning can stay on until the system is reset after the tire is checked. A flashing warning points to a TPMS fault, not a plain low tire.

Low Pressure Vs Flat Tire Vs TPMS Fault

• Low pressure warning: one or more tires are below the cold target.
• Flat tire warning: the car stored a flat-tire event, often on run-flat setups.
• Flashing warning light: the pressure system itself may need service.

INFINITI’s Q50 manual says the low-pressure light does not turn off the moment you add air. After inflation, the car must be driven above 16 mph for the system to read the corrected pressure and turn the light off. The same manual says a “Flat Tire – Visit dealer” message can stay on until the system is reset after the tire is checked or replaced. INFINITI Owner’s Manual

Where To Set The Pressure

Do not guess. Do not use the number on the tire sidewall. Use the cold tire pressure on the driver’s door-jamb label. If you fill warm tires to the door-label number, the reading can drift once the car cools.

Also check all four tires, not just the one that looks low. A Q50 warning can stay on because two tires are down a few psi.

How To Remove Flat Tire Warning Infiniti Q50 After Airing Up

Use this order for a normal low-pressure warning:

1. Park and let the tires cool.
2. Check every tire with a gauge. Set each one to the cold pressure on the door label.
3. Check for a leak. A nail, sidewall cut, or bent rim can bring the warning back.
4. Start the car and check the display. Some trims show each tire’s live pressure.
5. Drive above 16 mph. Give the system a few minutes to update.

If the light goes out after that drive, you are done. If it stays on, read the message on the dash before doing anything else.

Dash Sign	What It Means	Next Move
Light stays on	A tire is still below spec	Recheck all four tires cold
“Tire Pressure Low – Add Air”	The car sees low pressure	Add air, then drive
“Flat Tire – Visit dealer”	A flat-tire event was stored	Check the tire, then reset the system
Light flashes, then stays on	TPMS fault or bad sensor	Scan the system
Light returns next morning	Small leak or hot-fill error	Check pressure cold
No pressure values shown	A sensor is not reporting yet	Drive, then check again
Light came on after tire work	Sensor damage or no relearn	Go back to the shop
Light stays on after spare use	The spare may not be monitored	Refit the road wheel, then reset if needed

When The Warning Will Not Go Away

Most people assume the car needs a reset button. Often, it does not. The Q50 is usually telling you that it still sees bad pressure data or a bad TPMS signal.

The Light Flashes, Then Stays On

That pattern points to a fault, not low air. On the Q50, that can happen when a sensor battery is weak, a wheel sensor is missing, or a tire was replaced with hardware the system does not like. If the light flashes for about a minute at startup and then stays on, treat it as a repair issue. More air will not fix it.

The Car Says Flat Tire

If your display shows “Flat Tire – Visit dealer,” treat that as a different warning from a plain low-pressure lamp. The owner manual says that once the flat-tire warning is active, the tire should be checked and replaced if needed, and the system reset after that service. On some Q50 cars with run-flat tires, the light can stay on even after air is added back.

That also fits NHTSA tire safety guidance, which says a TPMS lamp means at least one tire is underinflated and should be checked soon. If the tire was driven low for long, air alone may not be enough because the tire itself may be damaged.

Cold Weather And Small Leaks

A small pressure drop overnight is enough to trip the warning on some mornings. You fill the tires in the afternoon, the light goes out, then the next cold start brings it back. That does not always mean the sensor is bad. It can mean the tire was only barely above the target or that a slow leak is still there.

After Wheel Or Tire Service

If the warning started right after new tires, a puncture repair, or a wheel swap, do not chase the reset at random. A shop can pinch a sensor, fit the wrong hardware, or send the car out without a proper relearn. If you used a spare, that can also confuse the reading because the system may not monitor that wheel the same way.

Check	What To Look For	Good Result
Pressure	All four tires match the placard	No low tire
Short drive	Car reaches more than 16 mph	Low-pressure light turns off
Dash message	Low-pressure warning only	No stored flat-tire event
Tire condition	No nail, bulge, cut, or bent rim	Pressure holds overnight
Recent tire work	No missing or damaged sensor	Each tire reports

Mistakes That Keep The Warning On

A stubborn Q50 warning is often caused by one of these misses:

• Using the tire sidewall number instead of the door placard.
• Checking one tire only and missing a second low tire.
• Adding air, then skipping the drive the system needs.
• Ignoring a flashing light that points to a TPMS fault.
• Trying to clear a stored flat-tire warning before the tire is checked.
• Skipping a leak check after the warning returns within a day or two.

If the light started right after new tires, wheel repair, or a seasonal swap, go back to the shop that did the work. A damaged sensor, wrong valve hardware, or a wheel setup that was never relearned can leave the warning on.

A Reset Routine That Saves Time

When you want the cleanest path, do the same routine every time:

1. Set all four tires cold.
2. Start the car and confirm which message is on the dash.
3. Drive above 16 mph.
4. Recheck the tire pressures the next morning.
5. Get the system scanned if the light flashes or the flat-tire message stays on.

That routine separates a plain low-pressure warning from a stored flat-tire event or a TPMS fault. In many cases, the Q50 warning clears after correct cold pressures and a short drive. When it does not, the next move is to check the tire for damage or have the system reset after repair.