Believe it or not, the washer bottle level sensor or coolant level sensor will cause a 'display defective' message on the W210. They are wired in series and work on a voltage coded system read by the instrument cluster. If the voltages are not within its parameters it displays this message "DISPLAY DEFECTIVE" - it is more commonplace to find the washer level sensor at fault.

HTH...

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership