I absolutely agree...fix the problem, don't Band-Aid the symptoms.


Having said that, the resistors are troubleshooting tools. After replacing the coolant sensor, and still getting the message, it led me to believe it was wiring/computer. I've since learned that coolant and washer fluid sensors are in series, which is substandard design. I seldom say that about Mercedes...I think MB puts much more effort into robust design than other car makers. But when a failing washer sensor yields "Coolant Low", that's just poor design. Chirping at me at every start up about coolant level is like crying wolf. The coolant level sensor is valuable...twice it has led me to faulty water pumps on 2 different CDIs. But it is not mission-critical like oil pressure or engine temp. It is on the list to get sensors replaced and working.


The swirl flaps are a performance measure. They are important, that's why MB put them in. They are for optimized performance/power. The resistor here is also a troubleshooting tool to confirm that the feedback from swirl flap motor was in fact the source of P2015 and limp mode. My main issue is that the feedback should be "swirl flaps not working...performance and power will not be optimized...visit workshop" It should NOT be..."swirl flaps not functioning...we're going to go ahead and cripple your car to the point where it is undriveable...visit workshop".


That's the end of my rant. Thanks

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Mark in MA
05 MB E320CDI 402k Granite Grey Metallic
05 MB E320CDI 267k Black
05 MB E320CDI 232k White
05 MB E320CDI 209k Tectite Grey
99 Dodge 2500 Cummins 5sp 148k
62 Jeep CJ-6 120k