2021-2025 Jeep/Dodge AM Radio Static Without DTCs

Stellantis has issued a STAR Online Publication, case number S258A000013, released in April 2025, addressing customer concerns about AM radio static in various Jeep and Dodge electric vehicles. This communication specifically covers instances where owners experience "AM Radio Static, With No Active or Stored Radio Antenna Diagnostic Trouble Codes (DTC)". This means the vehicle's diagnostic system does not detect any antenna-related faults, yet the audio quality on the AM band is poor.

The document clarifies that experiencing Jeep Wrangler AM radio static and similar issues is often an inherent characteristic of Electric Vehicles (EVs). All car manufacturers encounter similar AM static issues with varying reception levels in their EV models.

Symptoms

Owners of affected vehicles may notice significant static on the AM radio band. Beyond general static, other specific noise manifestations might be present, which the document refers to as "Helicopter noise" or "engine whine." These noises are directly related to the electrical emissions generated by the vehicle's electric powertrain.

Diagnosis and Trigger Conditions

The increased AM static noise in Electric Vehicles is primarily due to standard EV emissions. The intensity of these emissions and their effect on radio reception can vary significantly based on several environmental factors. These factors include:

• Distance to the radio transmission tower: Being further from a broadcast tower can weaken the signal, making static more noticeable.
• Radio transmission tower power levels: The power output of radio towers can fluctuate, often varying between day and night, which impacts reception quality.
• Weather conditions: Atmospheric conditions can affect radio wave propagation, leading to increased static.

When listening to a weak AM radio station, the static noise is more likely to be pronounced. This behavior is considered normal operation for electric vehicles under these conditions.

Important Warnings for Owners and Technicians

Stellantis provides crucial guidance to prevent unnecessary repairs and ensure proper diagnosis:

• DO NOT REPLACE ANY ANTENNA without an active antenna (DTC). If an active antenna Diagnostic Trouble Code is present, technicians must follow the specific diagnostic procedure service manual for that code. This prevents replacing functional components for what might be a normal EV characteristic.
• The use of a radio antenna test kit, such as a magnetic mounted whip antenna, is not an accurate representation of the original vehicle's antenna. Therefore, these kits should not be used to evaluate static on radio bands.

These warnings highlight that the presence of Jeep Wrangler AM radio static without accompanying DTCs is typically not indicative of a faulty antenna requiring replacement.

What to Check

While AM static without DTCs is often normal for EVs, there are still basic checks that can be performed to rule out other issues:

• Harness continuity: Inspect the antenna wiring harness for any breaks or damage.
• Cable pinch or damage: Look for any areas where the antenna cable might be pinched, cut, or otherwise damaged.
• Proper installation and connections: Ensure all antenna connections are secure, properly installed, and free from damage or excessive tension.

These checks ensure that the static isn't caused by a physical fault in the antenna system that could be easily rectified. However, if these checks yield no issues and no DTCs are present, the Jeep Wrangler AM radio static is likely a normal operational characteristic of the Electric Vehicle.

Manufacturer's Position

Stellantis has made a deliberate decision to retain AM radio service in their vehicles to meet consumer demand and potential regulatory requirements, despite the known challenges of AM reception in EVs. This communication serves to inform technicians and owners that certain levels of AM static are expected in these vehicles.

NHTSA ID: 11017092