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Message: <blockquote data-quote="funfer_fahrer" data-source="post: 152282" data-attributes="member: 2733"><p>The older the car the more disease it will acquire.  This is the basic rule.  In a modern beemer, more electronics items and sensors have been installed in order to make the complex machine operate at maximum efficiency.  And there is a also mechanical items, which is some of them are controlled by the sensors (i.e engine) and some of them are not (i.e. window power lifters).  We cannot predict the life span of most of the parts such as expansion tanks and harness wire but there should be some basic figure to give a rough idea.  The life span for a set of harness wire for example is about 5 years.  More than 5 years it can still be used but there is no guarantee.  This is not stated anywhere in the maintenance booklet but included in some service manual and BMW AG service bulletin.  The name of the game here is to take care the electronics part of the car and hopefully half of the war is won.  Unfortunately, because of our high humidity environment the electronics sesnor tend to fail more frequently than other UDM users in say, temperate countries where the relative humidity is low.  Sudden changes in temperature (exposed to heavy rain after a hot sunny day) can cause condensation to build up between the sensor and the main part.  The sensor will eventually fail prematurely because of constant exposure to continous rapid change in temperature.  The other controllable variable that is the mechanical part.  We can know it is about to fail if it produces  strange sound, or from mechanic advice and also from first hand information shared in this forum.</p></blockquote><p></p>

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