One problem related to horn assembly has been reported for the 2002 Ford Taurus. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Ford Taurus based on all problems reported for the 2002 Taurus.
Beginning shortly after my car was out of its 3,000 mile used car warranty, when car was parked and locked the horn began to go off anytime anywhere - up to 5-6 times a day. Why is this a safety concern? because the only way to avoid waking ourselves and neighbors up at night or having car alarm go off multiple times during day at work was to have a Ford tech disconnect the horn! I did so after the problem continued for many months - and now, with horn off, it still continues (lights blink and flash), just noiselessly. Incredible! only workaround besides disconnecting horn was to leave the car unlocked - not an option.