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Now I believe we're getting there.
So we all now believe MB does intend for the VFC to operate before the aux fans and in my R129 it does.
So, back to why it doesn't on the W140 and W124?
As I've previously mentioned, is the missing link the positioning of the water gauge sensor? If it's mounted on the exit side of the rad on one vehicle (R129) but entrance on the W140 we would see these temperature differences between vehicles.
Regarding the tropics unit - was it ever proved that the characteristics of the BMS were different? As maybe Sachs made other changes not visible - like changing the viscosity of the fluid to attain higher rpm when not fully locked? I just contemplating!
Lea
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