One problem related to horn assembly has been reported for the 2003 Mercury Sable. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mercury Sable based on all problems reported for the 2003 Sable.
Alarm system goes off at will, sounding horn, flashing lights, causing other flowing traffic to be distracted. Concerned that the alarm system may activate while in motion. Concerned that it may stop the vehicle in traffic.
| Electrical System problems | |
| Horn Assembly problems | |
| Computer Failure problems | |
| Dash Wiring problems | |
| Ignition problems |