I have 1999-323i, and recently the outside rear view mirrors are hot
all the time -- I have replaced them several days ago. Before that,
they weren't even warm -- now they're hot. Are they supposed to be
heated all the time? I did googling on this, and some says yes, but I
don't think they were ever hot like that before.
I wouldn't worry too much about it if they're both the same.
If they are, I can't see that two new ones would have the same fault, so
perhaps they are supposed to be warmer than one would expect.
As long as they don't blow fuses or melt the mirror housings...... :-)
BMW heated mirrors are typically turned on automatically based on outside
air temperature. Same goes for the heated door locks. However, as another
poster suggested, the heating elements in some cars are also activated by
the defroster button. I'm not sure of which models do that.
If it's 80 degrees outside and the heating elements are active something
is wrong. Have a tech (preferably one with a GT1 analyzer) look at it.
Thanks all for your comments.
I've detached the mirrors and saw two wires for each mirror. I
wonder, if I can wire either a switch for it or somehow wire to the
rear window defog switch. Do you think it's dangerous? I don' really
understand why it's so hard for BMW to have such switch, and that's
why I think my initial mirrors got bad spots within a few years and
must be broken -- they weren't even warm. And it's really unnecessary
when it's 90 degree outside and these mirrors are heated -- and hot.
No problem Dave, I just switch off the ignition when going downhill to save
the mirrors. :-)
1999 was also the same year that gave us the (U.S.) E46 climate control
system that always blows stale air at you when the ignition is turned on
(until it is manually turned off) - even when the fan was shut down before
switching off the car .
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