2004 Dodge Caravan Owner's Manual - Page 260
2004 Dodge Caravan Manual
Page 260 highlights
260 STARTING AND OPERATING are significantly underinflated. It is particularly important, therefore, for you to check the tire pressure in all of your tires regularly and maintain proper pressure. 1,2,3, OR 4 TIRE(S) LOW PRESSURE Low tire pressure levels of 28 psi [1.9 bars] (193 kPa) or less detected in one or more tires. Inspect all tires for proper inflation pressure, once proper tire pressure has been set the TPM system warning will reset automatically once ignition switch has been turned ON. 1,2,3, OR 4 TIRE(S) HIGH PRESSURE High tire pressure levels of 48 psi [3.3 bars] (330 kPa) or more detected in one or more tires. Inspect all tires for proper inflation pressure, once proper tire pressure has been set the TPM system warning will reset automatically once ignition switch has been turned ON. SERVICE TIRE PRESSURE SYSTEM/SEE OWNER'S MANUAL The Tire Pressure Monitor System (TPM) system requires service. See your authorized dealer for service. TIRE PRESSURE UNAVAILABLE The TPM system function is temporarily unavailable due to external electromagnetic interference, such as portable electronic devices, or near by radio or TV towers. Move the vehicle to an area free from radio, TV antennas and transmitting towers or disconnect any portable electronic devices, once the external interference is removed the TPM system will resume normal operation and "TIRE PRESSURE NOW AVAILABLE" will appear in the overhead console display.