My ACC Servo works great, it tries to cool and it tries to heat automatically, all the fan speeds and flap functions operate very well.

It does however have a small crack. This crack I'm sure lead to the PO's bypassing the servo and aux water pump.

If all this thing did was leak water externally, can't that crack be repaired and still retain it's function? I want to at least try..

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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