2011
Infiniti technical service bulletin ITB17-057 for 2011-2013 Infiniti M37, 2011-2013 Infiniti M56 and 2014-2015 Infiniti Q70 and others.
- Bulletin number
- ITB17-057
- Component
- Equipment: appliance: air conditioner
- 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.
Vehicles covered
- Infiniti M37 2011-2013 201120122013
- Infiniti M56 2011-2013 201120122013
- Infiniti Q70 2014-2015 20142015
- Infiniti M35 Hybrid 2012 2012
- Infiniti Q70 Hybrid 2014-2015 20142015
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