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Originally Posted by bakaneul
I heard it is hardware issue, not just software.
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The attached quoted part of the BMW press release seems to confirm a weakness seen in EGR coolers here in the UK. Also appears to explain a cause of recent fires starting in BMW diesel engine bays.
Quote:
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Part of this EGR module is the EGR cooler. In some cases, small quantities of the glycol coolant can escape and build up in the EGR module. When combined with carbon and oil sediments, this deposit can become combustible. With the high temperatures of the exhaust gases in this unit, these deposits can ignite. In rare cases this may cause melting of the intake manifold and in extreme cases a fire may result.
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