BMW X5 Owners & Service Manuals

BMW X5: Emissions Management

The N54 and N52KP meet ULEV II requirements for 2007. There are not many changes to the emission systems on these engines. The N54 engine has 2 underbody catalysts in addition to the "near engine" catalysts already in use from the N52.

The N51 engine, however, is a SULEV II compliant engine which meets the 2007 requirements. In addition to the 5 existing SULEV states of California, New York, Maine, Massachusetts, and Vermont - four states have been added for 2007. These states include, Connecticut, Rhode Island, Oregon and Washington State.

The N51 emissions measures include:

NOTE: The SULEV II information above is only preliminary and is accurate as of 8/06.

Additional information will be released as it becomes available.

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Cooling System The cooling system of the N54 engine consists of a radiator circuit and an isolated oil cooling circuit. The fact that there is an isolated oil-cooling circuit ensures that heat is not

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FREON The refrigerant Freon R12 is used in most BMW automobiles with an air conditioner up through the 1992 model year. It has a boiling point of - 29.8ºC (sea level), at which the refrigerant is transformed from a liquid into a gaseous state. This boiling point, however, is not constant. It is

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Danger of poisoning! Ingesting oil or absorbing through the skin may cause poisoning! Possible symptoms are: Headaches Dizziness Stomach aches Vomiting Diarrhoea Cramps/fits Unconsciousness Protective measures/rules of conduct: Pour oil only into appropriately marked containers Do not po

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