{"nhtsa_id":10127442,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-01-29","date":"2017-12-01","document_id":"ITB17-057","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:APPLIANCE:AIR CONDITIONER","mfr_system":null,"summary":"2011 - 2013 M AND M HYBRID, 2014-2015 Q70 AND Q70 HYBRID; POOR HEATER PERFORMANCE FROM THE PASSENGER SIDE IF YOU CONFIRM With the engine running at full operating temperature and the HVAC set to VENT (face) and 90°F on both sides, the VENT air temperature on the passenger side is more than 10°F colder than the VENT air temperature on the driver side, AND THEN When the HVAC control is adjusted to 60°F on both sides, there is a noticeable change from warm air to cool (A/C) air discharged from VENT on both sides. This confirms proper MIX door operation, NOTE: If the MIX door operation is abnormal, this bulletin does not apply. Refer to ASIST for further diagnostic information. AND No HVAC DTCs are stored. ACTION 1. Drain the engine coolant. 2. Modify the thermostat. 3. Flush the cooling system 3 times with Long Life Coolant. 4. Replace the heater core. 5. Replace the thermostat with gasket.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10127442-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10127442-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10127442","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"INFINITI","model":"M35 HYBRID","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_infiniti_m35h"]},{"make":"INFINITI","model":"M37","year_from":2011,"year_to":2013,"match":"exact","vehicle_ids":["2011_infiniti_m37","2012_infiniti_m37","2013_infiniti_m37"]},{"make":"INFINITI","model":"M37 HYBRID","year_from":2011,"year_to":2013,"match":"base","vehicle_ids":["2011_infiniti_m37","2012_infiniti_m37","2013_infiniti_m37"]},{"make":"INFINITI","model":"M56","year_from":2011,"year_to":2013,"match":"exact","vehicle_ids":["2011_infiniti_m56","2012_infiniti_m56","2013_infiniti_m56"]},{"make":"INFINITI","model":"M56 HYBRID","year_from":2011,"year_to":2013,"match":"base","vehicle_ids":["2011_infiniti_m56","2012_infiniti_m56","2013_infiniti_m56"]},{"make":"INFINITI","model":"Q70","year_from":2014,"year_to":2015,"match":"exact","vehicle_ids":["2014_infiniti_q70","2015_infiniti_q70"]},{"make":"INFINITI","model":"Q70 HYBRID","year_from":2014,"year_to":2015,"match":"base","vehicle_ids":["2014_infiniti_q70","2015_infiniti_q70"]}],"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":[]}