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The 2003 Toyota Corolla requires 7.7 quarts of transmission fluid. The transmission is a crucial component of the car, and issues are inevitable. Problems like stuck gears, leaks, jerking, delayed shifts, hard shifts, slipping transmission, and shudders can arise. It is important to promptly address any leaks and replace the transmission fluid every 30,000 to 60,000 miles. Neglecting maintenance can result in unpleasant sounds and a headache-inducing worn-out torque converter.
To start, you'll need 3.2 quarts for the first fill, and then a total of 7.7 quarts for a complete fill-up in the automatic transmission.