One problem related to warning light on has been reported for the 1998 Mercury Sable. The most recently reported issues are listed below.
While driving both air bags deployed without impact which caused driver to form a violent maneuver in the road, crashing into the vehicle ahead. On several occasions, before the air bag deployment, driver noticed the air bag warning light would flicker whenever going over any kind of bump in the road. The vehicle was rented from hertz rental car company.