how do you use heated mirrors?
#12
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Some additions to my earlier post;
If the battery voltage falls below 11.4V the heated mirrors will be de-activated and they will not be re-activated untill the voltage goes to 12.2V.
Also if your outside temperature sensor is faulty then the OBC reading defaults to -40C, at which time your mirrors and nozzles will be stuck in full heat mode.
If the battery voltage falls below 11.4V the heated mirrors will be de-activated and they will not be re-activated untill the voltage goes to 12.2V.
Also if your outside temperature sensor is faulty then the OBC reading defaults to -40C, at which time your mirrors and nozzles will be stuck in full heat mode.
#13
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Originally Posted by E60M5E60' post='403610' date='Mar 16 2007, 10:12 PM
If the battery voltage falls below 11.4V the heated mirrors will be de-activated and they will not be re-activated untill the voltage goes to 12.2V.
Also if your outside temperature sensor is faulty then the OBC reading defaults to -40C, at which time your mirrors and nozzles will be stuck in full heat mode.
Also if your outside temperature sensor is faulty then the OBC reading defaults to -40C, at which time your mirrors and nozzles will be stuck in full heat mode.
Also if the battery goes under voltage, you have serious problems anyway.
Forget about these under - 40 C / F temps.
All these three thesis are very hypothetical and has nothing to do with everydaydriving
for us who really drive under these conditions 3-4 months every year.
Going back to the real problem, the potential icy mirrows do not start melting if the darn OBC
do not get the situation, and pretty often in the spring it doesn't
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Originally Posted by Hopco' post='403607' date='Mar 16 2007, 01:59 PM
Great post E60M5E60
However, I have a stupid question. What is 'Position 2' for those of us with 'start buttons' not keys?
"the ignition key is not in position 2"
However, I have a stupid question. What is 'Position 2' for those of us with 'start buttons' not keys?
1 press is radio mode.
#15
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Originally Posted by Ricracing' post='403615' date='Mar 16 2007, 03:27 PM
I must belive this is fact, but when starting your car (key Pos 2), you usually go.
Also if the battery goes under voltage, you have serious problems anyway.
Forget about these under - 40 C / F temps.
All these three thesis are very hypothetical and has nothing to do with everydaydriving
for us who really drive under these conditions 3-4 months every year.
Going back to the real problem, the potential icy mirrows do not start melting if the darn OBC
do not get the situation, and sometimes it doesn't![Think](https://5series.net/forums/images/smilies/imported/think.gif)
Also if the battery goes under voltage, you have serious problems anyway.
Forget about these under - 40 C / F temps.
All these three thesis are very hypothetical and has nothing to do with everydaydriving
for us who really drive under these conditions 3-4 months every year.
Going back to the real problem, the potential icy mirrows do not start melting if the darn OBC
do not get the situation, and sometimes it doesn't
![Think](https://5series.net/forums/images/smilies/imported/think.gif)
#17
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Originally Posted by E60M5E60' post='403627' date='Mar 16 2007, 10:50 PM
To your real problem. As I mentioned, take the glass mirrors off and use your ammeter to see if there is current draw. If there is then your mirrors are working. Its also worth spraying some contact cleaner on the connectors. If not comfortable with this test then your dealer can test it for you for a fee.
The problem is with the programming.
I have seen my mirrows defrost in this short winter a lots of times.
But if the night temperature goes below ie -10 C and and is at 9 am
above 4 C , the systems doesn't work.
Now said twice!
#18
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They should defrost at the same speed and at about 2 mins any frost or ice (reasonable amount - sorry swedish guys) should melt. What you can do;
1. Take the mirror crystals off
2. Disconnect the heating wires
3. Measure the resistance of the crystals with an omh-meter. Should be identical or close
4. Measure the voltage supplied to the mirrors (on wires you disconnected from the mirrors). Should be identical.
In your case there is of the following things happening;
1. The resistance of the heating elements is far apart for various reasons such as defective part, different OEMs (Ask dealer to replace the mirror glass with the higher resistance)
2. If the resistance is the same spray the connector and the wires of the heating element with contact cleaner.
3. If the voltage supplied to the mirrors is not the same (in your case the mirror that defrosts later should provide less voltage than the other side) then ask the dealer to investigate the door modules.
Good luck
1. Take the mirror crystals off
2. Disconnect the heating wires
3. Measure the resistance of the crystals with an omh-meter. Should be identical or close
4. Measure the voltage supplied to the mirrors (on wires you disconnected from the mirrors). Should be identical.
In your case there is of the following things happening;
1. The resistance of the heating elements is far apart for various reasons such as defective part, different OEMs (Ask dealer to replace the mirror glass with the higher resistance)
2. If the resistance is the same spray the connector and the wires of the heating element with contact cleaner.
3. If the voltage supplied to the mirrors is not the same (in your case the mirror that defrosts later should provide less voltage than the other side) then ask the dealer to investigate the door modules.
Good luck
#19
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Confirmed!
Have been angry about this feature in some 6-7 Beemers now.
The night temperature can have been some -10 C but when I leave for work
at 9 - 10 am the temps can be 4 C and the mirrows are icy :thumbsdown:
The side mirrows start defrosting at +3 C and below.
They should absolutely also be activated by rear window defrost and/or steering heating.
Have been angry about this feature in some 6-7 Beemers now.
The night temperature can have been some -10 C but when I leave for work
at 9 - 10 am the temps can be 4 C and the mirrows are icy :thumbsdown:
The side mirrows start defrosting at +3 C and below.
They should absolutely also be activated by rear window defrost and/or steering heating.
PS Now you can claim you have been angry about this feature with 7-8 Beemers
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Mine weren't working so well at first. Then my SA installed some new fangled update. Think it was part of the CIP update.
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