Charcoal Filter
Anyway, if you use the filter I suggest changing it when it is time to change the air filter associated with your engine...which is usually every 2 years, more or less.
does anyone know a way to always keep the circulation button on at all times, the car sometimes turns it off when it thinks its not needed, but then it doesnt smell right w/o it on. thanks
I do not believe you can set it to keep it on at all times. It's a safety feature. If the recirc, is on all the time, and and one of th grommets leaks exhaust fumes inside, in thery you could die of Carbon Monoxide poisoning without knowing it until too late.
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I leave the filter on all of the time and do not have to reset it after key is turned off. I never use Recirculate and usually use AUTO and then vary temperatures as desired. My pre Nav E-500 also let me leave the filter on all of the time. Living in Southen CA you might as well use what you have to minimize the smog effect.
EDJ
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I leave the filter on all of the time and do not have to reset it after key is turned off. I never use Recirculate and usually use AUTO and then vary temperatures as desired. My pre Nav E-500 also let me leave the filter on all of the time. Living in Southen CA you might as well use what you have to minimize the smog effect.
EDJ
I do not believe you can set it to keep it on at all times. It's a safety feature. If the recirc, is on all the time, and and one of th grommets leaks exhaust fumes inside, in thery you could die of Carbon Monoxide poisoning without knowing it until too late.
Recirc and filter are different. Filter is just that. It filters all incoming air through charcoal to remove contaminants. Recirculate returns a major portion of the air back into the cabin. There is some amount of fresh air flow but not much.
YUK! Enough polution came through to cause black lung disease!
BTW, I think I may have found another little bug in the software in the A/C system..I have the 4-zone, try this. Turn on the AC and put both front sides on auto (auto appears in the digital display also). Now turn the fan down manually (auto disappears and the red lights go off). Turn off the AC (by pressing 0) and turn on again (by pressing 0). Display does not show auto, fan is at the last position (non-auto setting), but the red auto lights are on in both dial buttons....
We' ve been very happy, overall, with the four zone HVAC on the E-500. Far superior to what was in our earlier model E-320. Although the filter also worked well in that model.
BTW, I think I may have found another little bug in the software in the A/C system..I have the 4-zone, try this. Turn on the AC and put both front sides on auto (auto appears in the digital display also). Now turn the fan down manually (auto disappears and the red lights go off). Turn off the AC (by pressing 0) and turn on again (by pressing 0). Display does not show auto, fan is at the last position (non-auto setting), but the red auto lights are on in both dial buttons....
Are you sure the red lights on the auto buttons as well as the auto display go off when you turn down the fan speed manually? On my pre-nav E500, only the auto display message goes off when I turn down the fan speed manually by pressing the lower fan speed button. As an earlier poster (muhri) noted, there are actually two auto functions. The auto display message indicates that auto fan speed is on, while the red lights on the auto buttons show that auto air distribution is on. Pressing (0) twice would turn off the climate control system and then turn it back on with the same settings it had before (i.e., with the fan speed turned down, no auto display message and the two red lights on the auto buttons lit).
Unless things have changed between the 03 and 04 E500's, I think the problem you're describing is that the red lights on the auto buttons go out when you lower the fan speed manually by pressing the fan speed button and not the fact that the red lights on the auto buttons are on when you turn the climate control system back on with the (0) button. That's why I asked if the two red lights went off when you lowered your fan speed. If they did not go off, your climate control system is operating normally.



