There are 1 stored owner reports matching the visibility & wipers leading-label group for the 2021 Ram 3500 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)my truck has approx. 80,000 have been dealing with the dealer for at 3 months he says the heater core is clogged do to the type of antifreeze required to use. They flushed the system still the same blows luke warm air Will not keep windshields clear during bad weather They say heater core needs replaced and not covered under warranty my thoughts how can heater core be clogged on a truck less than 2 years old and 80,000 miles have made several complaints can get exact dates of first incident and have receipt on flushing No one else besides dealer has ever worked on truck
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.