Fix Tire Pressure Light

What does the TPMS light mean?

Your Tire Pressure Monitoring System (TPMS) light indicates one or more tires are outside the manufacturer’s specified pressure range. It can also point to a sensor/battery fault or a system that needs a relearn after service.

Common causes

• Ambient temperature drop (cold snap)

• Slow leak from a puncture or bead/valve stem

• Recent tire rotation/replacement without a TPMS relearn

• Dead or weak TPMS sensor battery (often 5–10 years)

• Temporary spare tire installed (no sensor or different size)

Quick diagnosis checklist

1. Find the spec on the driver door jamb (front/rear—and the spare, if equipped).

2. Measure all tires cold with a quality gauge; inflate/deflate to placard values.

3. Inspect for obvious damage (nails, cuts, cracked valve stems, bead leaks).

4. Check the spare—many trucks/SUVs monitor the spare and will set the light if it’s low.

How to fix & reset the TPMS light

A) Drive-to-reset (most direct TPMS)

1. Set all tires (and monitored spare) to placard pressure, cold.

2. Start the vehicle and drive 10–20 minutes at steady speed (typically >20–45 mph).

3. The light should turn off after sensors report valid pressures.

B) Manual reset / calibration (common on indirect TPMS)

1. Set pressures to placard.

2. Use the TPMS reset/calibrate option (infotainment or dash button).

3. Drive as prompted to complete calibration.

C) Relearn after service (sensor ID learn)

If tires were rotated, wheels changed, or a sensor replaced:

• Use the vehicle’s relearn mode (may require a TPMS tool or scan tool) to program sensor IDs/positions.

• Follow prompts to activate each wheel in order (LF → RF → RR → LR is common).

• Exit learn mode and verify the light stays off.

When the light won’t clear

• Active leak: verify with soapy water or a shop leak test.

• Dead sensor battery: replace the affected sensor(s).

• Wrong sensor (incorrect frequency/protocol) after wheel work.

• No relearn performed after rotation/replacement.

• Indirect system not calibrated: repeat the calibration routine.

Safety reminder

Driving with significantly under-inflated tires can overheat the tire and cause internal damage. Correct pressures before highway speeds or towing/hauling.