Why Is My Tire Pressure Light On in Marble Falls?
- Tyler Ellis
- 4 days ago
- 3 min read
You’re cruising through the Hill Country when a yellow horseshoe-shaped warning pops up on the dash. Now what? That light is your TPMS (Tire Pressure Monitoring System) telling you at least one tire is outside the safe pressure range. If you’re wondering, “Why Is My Tire Pressure Light On in Marble Falls?” you’re not alone—seasonal temperature swings, slow leaks, and worn valve stems make this a common issue we solve every day at Marble Falls Auto Center.
What Does the Tire Pressure Light Actually Mean?
Modern cars use either direct TPMS (sensors inside each wheel that read PSI) or indirect TPMS (uses wheel speed data to infer a low tire). A steady light usually means one or more tires are low. A blinking light that turns steady often indicates a sensor fault (like a dead sensor battery) before it stores a code.
Why Do Tires Lose Pressure—Even Without a Puncture?
1) Temperature DropsAir contracts as temperatures fall. A cool morning can drop each tire 1–2 PSI (or more after a cold front), triggering the light even if everything was fine yesterday. This is one of the most common answers to “Why Is My Tire Pressure Light On in Marble Falls?” during seasonal changes.
2) Slow LeaksNails/screws, tiny sidewall injuries, or a bead leak (where the tire meets the rim) can bleed pressure over days or weeks. You may top off air repeatedly—then the light returns.
3) Valve Stem or Core IssuesRubber stems dry out and crack; metal stems can corrode. A loose or damaged valve core can also leak just enough to set off TPMS.
4) Wheel/Rim DamageA pothole or curb strike can bend the rim lip, causing a slow bead leak and that persistent warning light.
5) TPMS Sensor Battery FailureDirect TPMS sensors use sealed batteries that eventually die (often 6–10 years). When they go, the light may blink on startup, then stay lit.
6) Tire Rotations, Wheel Swaps, or New TiresAfter service, the system may need to relearn sensor IDs or be recalibrated (for indirect TPMS). Skipping that step can keep the warning on even when pressures are correct.
How Do I Fix the TPMS Light—Right Now?
Step 1: Check pressures “cold.”Early in the morning (car parked a few hours), set each tire to the placard spec on your driver’s door jamb—not the number on the tire sidewall.
Step 2: Inspect for damage.Look for embedded nails/screws, sidewall bubbles, or cracked valve stems. If you find anything, avoid highway speeds and come straight in.
Step 3: Don’t forget the spare.Many SUVs/trucks monitor the spare. A low spare can keep the light on even when the four corners are perfect.
Step 4: Recalibrate/Reset (if applicable).Some models require a reset button or menu action after setting pressures; others relearn automatically after driving. If it still blinks, you likely have a sensor or system fault.
If you’re still stuck asking, “Why Is My Tire Pressure Light On in Marble Falls?”, it’s time for a professional check. We can quickly pinpoint leaks, test sensors, and set everything to spec. Start here: Marble Falls Auto Center.
Professional Solutions We Provide
Precision PSI set & road-temperature adjustment so your pressures stay correct once tires warm up.
Leak detection & flat repair (patch/plug from the inside when safe, or replacement if damaged).
Valve stem/core replacement for slow, sneaky leaks.
TPMS sensor testing & replacement with proper ID programming/relearn.
Rim/bead service for corrosion or bends that cause persistent leaks.
We finish with a TPMS relearn or calibration and a test drive to confirm the light stays off. If you prefer, you can schedule a tire & TPMS diagnostic online in a minute.
Why You Shouldn’t Ignore the TPMS Light
Underinflated tires run hotter, wear faster on the shoulders, reduce fuel economy, and increase stopping distance—especially in the rain. Overinflated tires ride harshly and reduce the contact patch, hurting traction. Fixing the cause now keeps you safer, extends tire life, and saves money at the pump.
Get Reliable TPMS & Tire Service in Marble Falls
If you’re still asking, “Why Is My Tire Pressure Light On in Marble Falls?”, let our ASE-certified techs diagnose it fast and fix it right. From simple air top-offs to sensor replacements and rim repairs, we’ll get you driving confidently again. Book your visit today.
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