2003 BMW 540i Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 BMW 540i

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Engine oil leaks commonly develop from both valve cover gaskets, intake manifold, and PCV plate after about 60,000 miles.

Leaks are known to develop in the cooling system. It is common to see more than one part recommended for repair/replacement due to overlapping labor and the use of many plastic parts in the system.

The blower final stage fan resistor is known to fail. Symptoms are the heater fan speed varies regardless of the setting, the fan will not turn off when the car is switched off, or the fan will not switch on at all.

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I've replaced radiator, alternator and now I belive my water pump needs replaced. Only had this car a year and purchased it w 108,000 now has 134,000. It seems never ending w coolant leaking problems. What causes the substantial coolant issue leaking problems for all these repairs? I heard he...

Advised that the cost of replacing the upper timing chain cover gasket would be $1700.00. Is this a good estimate?

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In a crash that deploys the driver's front air bag, the inflator of the air bag can rupture, causing metal debris to strike vehicle occupants. Dealers will replace the front driver's air bag module free of charge to correct the concern.

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The car ran beautifully for 7 years (2003-2010) ..Then everything fell apart at 85,000 miles..... radiator, water pump, power steering, hoses/belts. "Service engine soon" light - Recommendation: Sell car at 75,000 miles - and don't look back.

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