$91.00 and two hours labor so you don't have to add 20 to the temperature? I tend to think that this is an excessive expense.
My 30OD does about the same thing. It is annoying.
I observe that one can buy an indoor/outdoor, battery driven thermometer for under $20 and install it with a piece of velcro. JC Whitney sells these.
I wonder if one might just take the sensor from a 12v non-MB thermometer and splice it into the line?
I may actually do this someday and if I do I will tell you the result.
I assume that there is a way of changing the thermometer to degrees Celsius. Germans don't do Fahrenheit. This could be the only complication, but it is also possible that the sensor sending unit is different for F than C.
Semibodacious Transmogrifications a Specialty
1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)
"Time flies like and arrow, yet fruit flies like a banana"