2009 Hyundai Sonata Owner's Manual - Page 211

5 VEHICLE MAINTENANCE REQUIREMENTS 6 MAINTENANCE UNDER SEVERE USAGE CONDITIONS F040A02NF-AAT The following items must be serviced more frequently on cars normally used under severe driving conditions. Refer to the chart below for the appropriate maintenance intervals. R : Replace I : Inspect and, after inspection, clean, adjust, repair or replace if necessary MAINTENANCE ITEM ENGINE OIL AND FILTER AIR CLEANER FILTER SPARK PLUGS BRAKE PADS, CALIPERS AND ROTORS REAR BRAKE DRUMS/LININGS, PARKING BRAKE STEERING GEAR BOX, LINKAGE & BOOTS/ LOWER ARM BALL JOINT, UPPER ARM BALL JOINT DRIVE SHAFTS AND BOOTS MANUAL TRANSAXLE OIL CLIMATE CONTROL AIR FILTER (FOR EVAPORATOR AND BLOWER UNIT) AUTOMATIC TRANSAXLE FLUID MAINTENANCE OPERATION R R R I I I I R R R MAINTENANCE INTERVALS EVERY 3,000 MILES (4,800 KM) OR 3 MONTHS MORE FREQUENTLY MORE FREQUENTLY MORE FREQUENTLY MORE FREQUENTLY MORE FREQUENTLY EVERY 7,500 MILES (12,000 KM) OR 6 MONTHS EVERY 60,000 MILES (96,000 KM) MORE FREQUENTLY EVERY 30,000 MILES (48,000 KM) C, E B, H DRIVING CONDITION A, B, C, D, E, F, G, H, I, K C, D, G, H C, D, G, H C, D, E, F, G, H, I C, D, E, F A, C, D, E, F, G, H, I, J C, E A, C, E, F, G, H, I SEVERE DRIVING CONDITIONS A - Repeatedly driving short distance of less than 5miles (8km) in normal temperature or less than 10miles (16km) in freezing temperature B - Extensive engine idling or low speed driving for long distances C - Driving on rough, dusty, muddy, unpaved, graveled or saltspread roads D - Driving in areas using salt or other corrosive materials or in very cold weather E - Driving in sandy areas F - Driving in heavy traffic area over 90°F (32°C) G - Driving on uphill, downhill, or mountain road H - Towing a Trailer, or using a camper, or roof rack I - Driving as a patrol car, taxi, other commercial use or vehicle towing J - Driving over 100 MPH (170 Km/h) K - Frequently driving in stop-and-go conditions