What Does TPMS Warning Light — Low Tire Pressure Mean?
Reviewed by automotive technicians · Last updated August 22, 2026
Quick Answer
TPMS Warning Light — Low Tire Pressure = The Tire Pressure Monitoring System has detected that one or more tires are below the recommended cold inflation pressure (typically 35 PSI on Ford Explorer). A solid TPMS light means low tire pressure. A flashing TPMS light (60-90 seconds on startup then solid) means a system fault — a dead sensor or communication loss.
Severity: Warning · System: Ford Explorer (2016-2025)
DRIVE WITH CAUTION — Repair Soon
The Tire Pressure Monitoring System has detected that one or more tires are below the recommended cold inflation pressure (typically 35 PSI on Ford Explorer). A solid TPMS light means low tire pressure. A flashing TPMS light (60-90 seconds on startup then solid) means a system fault — a dead sensor or communication loss.
What you see: A yellow horseshoe-shaped icon with an exclamation mark in the center, illuminated solid
What to Do Right Now
Check all four tire pressures with a gauge as soon as possible. The recommended pressure is on the driver's door jamb sticker — do NOT use the max PSI on the tire sidewall. Inflate any tire below 30 PSI immediately — driving on underinflated tires causes premature wear, reduced fuel economy, and risk of a blowout. If all tires are at correct pressure but the light stays on, the system may need a TPMS relearn (hold the reset button under the steering wheel with key ON/engine OFF).
Emergency Action Guide
URGENCY: DRIVE WITH CAUTION
YELLOW — Check all four tire pressures with a gauge as soon as possible. Inflate any tire below 30 PSI immediately — driving on underinflated tires causes premature wear, reduced fuel economy, and risk of a blowout. If all tires are at the correct pressure but the light stays on, try the TPMS relearn procedure (key ON/engine OFF, hold the reset button under the steering wheel for 3 seconds, then inflate each tire in sequence starting from the front left).
Can you keep driving?
Yes, with caution — check tire pressures manually as soon as possible. If pressures are all correct, the vehicle is safe to drive. If one or more tires are significantly low, inflate them before driving any distance. Do not drive on tires below 25 PSI — this is a blowout risk at highway speed.
What happens if you ignore it?
MODERATE — underinflated tires generate excessive heat, which can cause tire failure (blowout) at highway speed. A tire that is 20% underinflated has approximately 25% reduced tread life and a significantly increased blowout risk. Additionally, underinflated tires increase stopping distance and reduce fuel economy. Check and inflate your tires promptly.
Diagnosis & Cost
- Check all four tire pressures with a gauge. The correct pressure is on the driver's door jamb sticker — typically 35 PSI for the Ford Explorer. Do NOT use the max PSI on the tire sidewall — that is the tire's maximum safe pressure, not the recommended pressure.
- Inflate any tire below 30 PSI immediately. A tire that is 10 PSI low generates significantly more heat and is at risk of a blowout, especially at highway speed. If a tire will not hold air, it may have a nail or other puncture — visit a tire shop.
- If all tires are at the correct pressure but the light stays on, perform a TPMS relearn: Turn key to ON (not start). Press and hold the TPMS reset button (under the steering wheel or in the glove box) for 3 seconds until the horn beeps. Then inflate (or release and reinflate) each tire in order: front left, front right, rear right, rear left. The horn beeps after each tire is learned.
- If the TPMS light is FLASHING (not solid), this indicates a system fault — a dead sensor or communication loss, not low pressure. This requires a TPMS diagnostic tool to identify which sensor has failed.
| Item | Details |
|---|---|
| Estimated Repair Cost | $0–5 (air at a gas station) – $20–40 (12V portable air compressor) – $60–120 per TPMS sensor if a sensor battery has died – $50–100 for TPMS relearn procedure at a tire shop |
Repair Cost Estimate
| Option | Est. Cost | Notes |
|---|---|---|
| Do It Yourself | $0-5 (air at a gas station); $20-40 (12V portable air compressor) | If you have basic tools and mechanical knowledge |
| Mechanic / Dealer | $60-120 per TPMS sensor replacement if a sensor battery has died; $50-100 for TPMS relearn procedure | Includes diagnostic labor + parts |
About This Data
Dashboard warning light information compiled from Ford owner's manuals, OEM service documentation, SAE J2402 standards, and NHTSA guidance. This is an independent reference — not affiliated with or endorsed by Ford. All brand names, model names, and dashboard symbols are trademarks of their respective vehicle manufacturers.
Published: 2026-07-11 · Repair costs are national averages and vary by location. Always get multiple quotes before authorizing repairs.
⚠️ Red dashboard lights demand immediate action — continued driving may cause engine damage or brake failure. When in doubt, pull over and consult a certified mechanic.
By Patricia N. Simmons — Automotive Electronics Specialist
Patricia has spent 12 years researching instrument cluster diagnostics and dashboard warning light systems across 20+ automotive brands. She has analyzed over 500 OEM owner's manuals and SAE standards to compile this reference. Her experience includes field diagnostics with certified technicians, cross-referencing NHTSA technical service bulletins, and building practical decision guides that help drivers understand exactly what each warning light means — and whether they should keep driving or pull over immediately.
About Patricia · Published: 2026-07-11 · Updated: August 22, 2026
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Frequently Asked Questions
Can I drive my Ford Explorer with the TPMS Warning Light — Low Tire Pressure on?
Yes, but with caution. Check tire pressures immediately — driving on severely underinflated tires is dangerous. Inflate to the door jamb sticker pressure as soon as possible.
How much does it cost to fix the TPMS Warning Light — Low Tire Pressure on a Ford Explorer?
DIY cost estimate: $0-5 (air at a gas station); $20-40 (12V portable air compressor). Mechanic/dealer estimate: $60-120 per TPMS sensor replacement if a sensor battery has died; $50-100 for TPMS relearn procedure. Costs vary by location, shop rate, and whether additional components are found to be damaged during diagnosis. Always get 2-3 quotes before authorizing repairs.
What causes the TPMS Warning Light — Low Tire Pressure to come on in a Ford Explorer?
The Tire Pressure Monitoring System has detected that one or more tires are below the recommended cold inflation pressure. Common causes include seasonal temperature drops (every 10°F drop los. The most common causes vary by model year and driving conditions. See the troubleshooting section above for model-specific diagnostic guidance.
Why does the TPMS light come on when it gets cold?
Tire pressure drops approximately 1 PSI for every 10°F decrease in temperature. This is a physical property of air (Gay-Lussac's law). On the first cold night of fall, many drivers see the TPMS light for the first time. The fix is simply to add air to bring the pressure back to the recommended level. The light should clear after a few miles of driving.
What is the correct tire pressure for my Ford Explorer?
The correct pressure is on the yellow/white sticker on the driver's door jamb — NOT on the tire sidewall. For the Ford Explorer, it is typically 35 PSI for all four tires on most model years. If you have different tire sizes than stock, consult a tire shop for the correct pressure. Overinflating to the sidewall max (44 PSI) causes a harsh ride and premature center tread wear.
How long do TPMS sensors last on a Ford Explorer?
TPMS sensor batteries last 5–7 years. On a Ford Explorer, the sensors are powered by non-replaceable lithium batteries. When a sensor battery dies, the entire sensor must be replaced ($60–120 installed). Since all four sensors were likely installed at the factory together, when one dies the others are usually close behind. Consider replacing all four at once when the first one fails.
Can I ignore the TPMS light if I check my tires manually?
You can, but it is not recommended. Manual pressure checks are only accurate at the moment you check — a tire can develop a slow leak at any time. The TPMS system provides continuous monitoring and will warn you before a tire becomes dangerously low. If the light is on because of a sensor fault (not low pressure), you should still check pressures manually at least once a week until the sensor is fixed.