One problem related to horn assembly has been reported for the 2009 Smart Fortwo Cabrio. The most recently reported issues are listed below.
Had been driving on highway for approximately 25 miles when a strong odor of electrical wiring burning became evident. Windshield wipers, horn, check engine light, and dash lights began to malfunction. Pulled car to side of road and noticed smoke coming from dash. Driver exited the vehicle and then flames became evident from dash and front area of car. Car burned completely, total loss.
| Electrical System problems | |
| Wiring problems | |
| Horn Assembly problems |