Out of an "abundance of caution," BMW Canada is recalling more than 80,000 vehicles to fix positive crankcase ventilation valves that could catch fire, even if the vehicle's not driven.
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A heating element for the positive crankcase ventilation (PCV) valve -- an emissions control component that relieves pressure buildup in the engine and prevents oil from being forced out past the engine's seals -- is prone to overheating. The heater prevents the valve from freezing in winter conditions. Affected vehicles include 1-, 3- and 5 Series sedans and wagons, X3 and X5 crossovers and Z4 roadsters from model years 2006 through 2011.
Another recall covers heating and air conditioning wiring that can overheat and melt connectors, creating a fire risk that exists even when the vehicle is parked. This campaign applies to 3 Series models sold between 2006 and 2011.
The PCV valve recall alone affects more than half of the cars BMW sold in Canada during those six model years.