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2007-2015 Various Vehicles Equipped With All Wheel Drive – Propane, Or Natural Gas Odor During Idle Or Low Speed Driving
2013-2015 MKZ vehicles equipped with a 3.7L, 2007-2014 Edge, 2007-2015 MKX, 2011-2015 Explorer, 2009-2015 Flex, 2010-2015 MKT, 2008-2015 Taurus, 2008-2009 Taurus X, 2009-2015 MKS, 2007-2012 Fusion/MKZ, and 2007-2011 Milan vehicles equipped with a PTU can exhibit a propane, or natural gas odor from the HVAC system after driving the vehicle for 20-45 minutes.
This odor, if present, is most noticeable while idling or during low speed driving.
Inspect the PTU (Power Transfer Unit) for fluid leaks and repair any leaks.
If odor is still present after the leak repair and cleaning, replace the PTU and vent hose, if equipped.
For vehicles with no leaks and odor present, replace the PTU along with the PTU vent hose, if equipped.
