Re: Heated Mirror - on all the time (1999-323i)

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Re: Heated Mirror - on all the time (1999-323i)

Dave Plowman (News)

30 Aug 2007 09:08

> > BMW heated mirrors are typically turned on automatically based on
> > outside air temperature. Same goes for the heated door locks.
[quoted text clipped - 4 lines]
> On the OP's early E46, the mirrors are heated whenever the ignition is
> on.

And I'm amazed they're still working. ;-)

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Tom K.

29 Aug 2007 23:51

>> 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,
[quoted text clipped - 6 lines]
> poster suggested, the heating elements in some cars are also activated by
> the defroster button. I'm not sure of which models do that.

On the OP's early E46, the mirrors are heated whenever the ignition is on.

> 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.

Nope - that was the BMW design. Hopefully the E90 and other newer models
have some sort of temp sensor, but the 1999 E46 didn't.

Tom K.

Doug Vetter

29 Aug 2007 23:19

> 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.

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.

-Doug

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Doug Vetter, ATP/CFI
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http://www.dvatp.com
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WK2	28 Aug 2007 23:59
Hi all, 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. Thanks.

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