Here's the proper procedure:
1. Check Tire Pressure: Use a reliable tire pressure gauge to measure the pressure in each tire, including the spare. Inflate all tires to the recommended pressure listed on a sticker located on the driver's side doorjamb or in your owner's manual. Don't just rely on the visual appearance of the tire.
2. Drive the Vehicle: Drive your Dodge Ram for a short distance (5-10 miles) at a moderate speed. This allows the TPMS sensors to re-register the new tire pressure.
3. Check the Light: After driving, check if the low tire pressure warning light has turned off.
If the light remains on after following these steps:
* Faulty Sensor: One or more of your TPMS sensors may be malfunctioning. You'll need to have a mechanic diagnose and potentially replace the faulty sensor(s).
* System Malfunction: There could be a problem with the TPMS system itself. Again, a mechanic will need to diagnose and repair this.
* Tire Pressure Still Low: Double-check your tire pressures; ensure they are accurately inflated to the recommended PSI.
Important Note: Never rely solely on the TPMS light. Regularly check your tire pressure yourself using a gauge. Under-inflated tires can lead to poor fuel economy, premature wear, and even blowouts.