{"nhtsa_id":10195476,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-06-09","date":"2021-05-24","document_id":"ITB21-012","mfr_campaign":null,"replaces":null,"component":"FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"INCORRECT FRONT/REAR SONAR SENSOR OPERATION SERVICE INFORMATION Sonar sensors use ultrasonic sound waves to detect objects, and determine short range distance to those objects. If a sonar sensor’s visible surface has been damaged or is partially, or totally, obstructed by mud/dirt, road debris, bugs, snow or ice, the sound waves that are being transmitted can be muted, redirected, absorbed, and not received. Possible causes of incorrect sensor (sonar sensor) operation: • Object not within the detection range of the sensors. • Sensor range sensitivity setting is set too sensitive, or not sensitive enough. • Objects that cannot be detected by the sensors. • Foreign material (mud/dirt, road debris, bugs, snow or ice, etc.) attached to any of the sensors, or their surroundings. • Damage to one or more of the sensors, or the area around the sensors. • Items installed around one or more sensor (e.g. Accessories or bumper protectors, etc.). • The vehicle ride height has been altered.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10195476-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10195476-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10195476","components":[{"id":"driver-assistance","name":"Driver assistance","parent":null},{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"INFINITI","model":"INFINITI","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}