TSB 24-2180

This article supersedes 24-2028 to update the vehicle symptom. Some 2022-2024 Expedition/Navigator vehicles may exhibit a random "Blind Spot Not Available Sensor Blocked" and/or "Cross Traffic Alert Not Available Sensor Blocked" warning messages in the IPC with no vehicle or objects near the vehicle. This condition may be intermittent, more noticeable in wet conditions. Diagnostic trouble codes B13F3:97 in the side obstacle detection control module - left (SODL) and/or B13F4:97 in the side obstacle detection control module - right (SODR) and/or U0233 and U0232 in the image processing module A (IPMA) may also be present. This may be due to a mud/snow/ice build-up between the radar sensor and the rear bumper cover or damage or corrosion to the radar sensor, connector or harness. To correct the condition, follow the Service Procedure to repair damage and install shields.