{"nhtsa_id":10053915,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-12-04","date":"2013-08-06","document_id":"ESA-23-L-2","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT","mfr_system":null,"summary":"AUDI: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE DIFFERENTIAL PRESSURE SENSOR MAY HAVE CORROSION FORMING, IN SOME VEHICLES, WHICH CAUSES A MALFUNCTION INDICATOR LIGHT (MIL) TO COME ON AND WILL NOT PASS EMISSION INSPECTION OR A POSSIBLE PROBLEM WITH ENGINE CONTROL MODULE (ECM) SOFTWARE. MODEL 2009-2012 Q7. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10053915","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"differential","name":"Differential","parent":"powertrain"},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"AUDI","model":"Q7","year_from":2009,"year_to":2012,"match":"exact","vehicle_ids":["2009_audi_q7","2010_audi_q7","2011_audi_q7","2012_audi_q7"]}],"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":[]}