One problem related to defogger heater has been reported for the 1998 Dodge RAM. The most recently reported issues are listed below.
Heater core failed. Was driving when it bursted & fogged up windshield without warning. This caused a hazard of poor visibility for driver. This has happened 5 times, and had been replaced each time.
| Exterior Rearview Mirror problems | |
| Rearview Mirror problems | |
| Windshield problems | |
| Defogger Heater problems | |
| Windshield Wiper/washer problems |