One problem related to rearview mirror has been reported for the 1999 Mercury Cougar. The most recently reported issues are listed below.
Vehicle experiencing a momentary loss of steering when driving over a water puddle, and intermittently causing malfunction to instrument panel lights. Dealer / manufacturer notified, and unable to locate cause. Both side mirrors fell off. The cd and the radio are not operational. The radiator hose broke after 2 months of purchasing the vehicle. The back window wiper failed. The sun roof failed. This vehicle had numerous mechanical problems.