A Check Antenna message means the radio is not receiving what it expects from the antenna. It is a specific message about a specific part of the system, which is useful — it narrows things considerably.
Equipment problem or account problem?
Worth settling first, because they go to different places. Check Antenna is an equipment message. If instead your radio is working but you have no subscription access, that is an account matter and only the service provider can resolve it. We can help you tell the two apart, but we cannot resolve account or billing issues.
1. The connector
Where the antenna cable plugs into the radio is the single most common failure point. Unplug and reconnect it firmly. Look for bent pins, corrosion or debris in the connector.
2. The cable
Follow the cable along its full run. In vehicles it gets trapped in door frames, pinched under trim and pulled at over time. A cable can fail intermittently while looking perfectly fine, so pay attention to any point where it changes direction sharply or passes through a gap.
3. Placement and sky view
These antennas need a clear view of the sky. A magnetic-mount antenna that has migrated, been moved, or now sits under a roof rack, a bike carrier or a metallic windscreen coating will struggle. Underground parking, dense tree cover and tall buildings all interrupt the signal.
4. Intermittent versus constant
A message that appears only in certain locations, or only on rough roads, tells a different story from one that is permanently displayed. Note which yours is — it is one of the first things we would ask.
5. The antenna itself
Antennas do fail, particularly after years of weather and UV exposure. But it is worth ruling out the connector, the cable and the placement first, because those are free to check and account for a large share of cases.
Still stuck?
Call a product specialist and describe what yours is doing.