I am looking at purchasing a 1997 E320, but I have a question about the climate control. It seems like using the manual fan control on the climate control console, the speed only goes minimum to medium but stays the same speed even on high. Does this sound like a heater motor, resistor....? Is it a pain to get at and check the heater motor like the W124?

TIA,
Steve

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1997 E320
1990 Nissan 300ZX Twin Turbo (Stage X+)