2008 Hyundai Santa Fe Owner's Manual - Page 256

3 WHAT TO DO IN AN EMERGENCY 8 NOTE: o The TPMS malfunction indicator may be illuminated if the vehicle is moving around electric power supply cables or radios transmitter such as at police stations, government and public offices, broadcasting stations, military installations, airports, or transmitting towers, etc. This can interfere with normal operation of the Tire Pressure Monitoring System (TPMS). o The TPMS malfunction indicator may be illuminated if some electronic devices, such as notebook computer, are used in the vehicle. This can interfere with normal operation of the Tire Pressure Monitoring System (TPMS). Changing a tire with TPMS If you have a flat tire, the Low Tire Pressure and Position telltales will come on. Have the flat tire repaired by an authorized Hyundai dealer as soon as possible or replace the flat tire with the temporary spare tire. NEVER use a puncture-repairing agent to repair and/ or inflate a low pressure tire. The tire sealant can damage the tire pressure sensor. If used, you will have to replace the tire pressure sensor. Each wheel is equipped with a tire pressure sensor mounted inside the tire behind the valve stem. You must use TPMS specific wheels. It is recommended that you always have your tires serviced by an authorized Hyundai dealer. Even if you replace the low pressure tire with the temporary spare tire, the Low Tire Pressure and Position telltales will remain on until the low pressure tire is repaired and placed on the vehicle. After you replace the low pressure tire with the temporary spare tire, the TPMS malfunction indicator may be illuminated after a few minutes, because the temporary spare tire does not have a sensor. Once the low pressure tire is re-inflated to the recommended pressure and installed on the vehicle, the TPMS malfunction indicator and the low tire pressure and position telltales will extinguish within a few minutes. If the indicators are not extinguished after a few minutes, please visit an authorized Hyundai dealer. You may not be able identify a low tire by simply looking at it. Always use a good quality tire pressure gauge to measure the tire's inflation pressure. Please note that a tire that is hot (from being driven) will have a higher pressure measurement than a tire that is cold (from sitting stationary for at least 3 hours and driven less than 1 mile (1.6km) during that 3 hour period).