Believe it or not, the service manager at the local M.B. dealer has told me that if you switch to "EC" (turning off the compressor on the A/C but leaving ON the fan) three to four minutes before you turn-off the car at the end of the day -say your last drive going home-) it could save the life of your evaporator, or at least extended considerably.

This is very useful considering how problematic the evaps can be on W124s and W140s.

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A. Rosich
CL 500, 1998
S 500 L, 1998
E 320 T, 1995 [Sadly sold ]