Quote:
Originally Posted by Doktor Bert
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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Good to know, thanks for the info.
Quote:
Originally Posted by suginami
I don't think the W210 cars got the Can bus until 1998.
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My 97 diesel is can bus. I can access all the powertrain, body and chassis trouble codes through the climate control unit without any special tools. It makes diagnostics a breeze.