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In case of 4-zone climate control, there is also a heater matrix in the back of the car. I don't know if there is a second aircon evaporator though.
Yes there is - on the 958 seies the R134 fill quantity differs in the 2 zone vs 4 zone systems, and some of the system pressures. Was the 955/957 available with 4-zone HVAC? The manual doesn't show it that I found..
Yes there is - on the 958 seies the R134 fill quantity differs in the 2 zone vs 4 zone systems, and some of the system pressures. Was the 955/957 available with 4-zone HVAC? The manual doesn't show it that I found..