When your 2020 Ram 2500's remote keyless entry range drops from working across a parking lot to barely working at the door, something has changed. Reduced range is a common symptom that usually points to specific, diagnosable causes.
Understanding Normal Range
The Ram 2500's key fob typically has a working range of 30-100 feet depending on conditions. When range drops to just a few feet, requiring you to stand next to the truck for the remote to work, the signal strength has been significantly compromised.
Most Common Causes
Reduced range almost always results from: weak or dying fob battery (by far the most common cause), aftermarket accessories drawing power from the fob, vehicle receiver issues reducing sensitivity, environmental interference (new cell towers, structures), or physical damage to the fob's antenna or circuit board.
The Battery Connection
As the fob battery depletes, signal strength decreases proportionally. The fob may still work at close range while appearing "dead" from further away. This is often the first sign of a dying battery—you don't go from full range to zero instantly, but gradually lose distance over time.
Other Factors
Range can also be affected by: nearby radio frequency sources, metal buildings or structures blocking signals, the fob being damaged from drops or moisture, aftermarket remote starters or alarms interfering, or a developing receiver issue on the vehicle. Multiple fobs with reduced range suggests a vehicle-side problem.
Restoring Normal Range
Replace the fob battery first (CR2032)—this resolves most cases. Test range after replacement. If range doesn't improve, test with another fob if available. Check for aftermarket electronics that might cause interference. If problems persist, have the keyless receiver module evaluated.