I have a '95 E320 (w124) and when I purchased the screen lit and was clear, displaying either nothing or usually +136F. My sensor is behind the plate. I went to my local junk yard and found two 1985 300 series cars. They each had a little silver sensor behind the bumper with a wire coming from it. They didn't look the same, but I cut one and unmounted it. I got it for FREE! Back at home I cut mine, it had two wires in the sheath, a brown and a green. Spliced it together, and now it displays the accurate temp! Free Fix! My question is, why does the sensor on my 1995 with only 40k miles on it fail, and the one I get from the junkyard from a 1985 with 260k on it plus the interior fire that caused it to be in the junkyard work fine? Is it a sign of MB quality? I think my wagon is a Euro edition, though--clear lenses, white driving lights, wide Euro plate mount in the front--actually had to drill my license plate to get it to fit! The junk sensor said "Germany--+85 degrees Celesius, yet on my dash the display reads Fahrenheit. Did that discrepancy cause the failure?

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2002 Mercedes-Benz E320 4Matic
1995 Mercedes-Benz E320 Wagon
2005 Land Rover LR3 V8 SE
1999 Audi A8 4.2L quattro