One problem related to horn assembly has been reported for the 2005 Mercedes Benz E500. The most recently reported issues are listed below.
Controls on steering column periodically do not work. While most of these are convenience items, the horn also did not work. Happened 4 times--12/16 driving to work; 12/'20 driving to and from dulles airport; 12/26 in the morning. Each time the temperature was below 30 degrees f. Dealer serviced vehicle on 12/22--said wiring was repaired but experienced same problem again on 12/26. Restarting car does not reset the controls. Concerned about driving without an operable horn.
| Electrical System problems | |
| Crankshaft Position Sensor problems | |
| Wiring problems | |
| Horn Assembly problems |