WTH! Two unknown alarms.
10-13-2009, 06:34 PM
#1
Members
Thread Starter
Join Date: Jul 2009
Location: The Great PNW
Posts: 124
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2005 545i, Silber-grau/grau. Vanilla flavored except for cold WX pkg.
Just finished a 2100 mile trip to SoCA last week and received these two alarms. Fortunately both were innocuous. The 545i performed admirably throughout the trip.
1. While travelling the 210 (Foothill) Fwy in LA, there was no gong or yellow triangle but the iDrive screen displayed the single word "Poison." Does the microfilter system have a Carbon Dioxide or Monoxide detector? Traffic was light so it must have been the San Gabriel Valley air.
2. Returning through the Mt. Shasta area early on a chilly morning the gong sounded with the yellow triangle with a snowflake inside! The iDrive screen said "Outside temperature less than 37 degrees."
37 degrees? What is the significance of that temp? How do I adjust it to something meaningful like 32 degrees or even 28 degrees when the road surface starts to freeze?
I have searched the archives (an exercise in frustration) and my manual and cannot find anything about these alarms.
I feel confident there are some gurus out there who can explain this.
TIA
1. While travelling the 210 (Foothill) Fwy in LA, there was no gong or yellow triangle but the iDrive screen displayed the single word "Poison." Does the microfilter system have a Carbon Dioxide or Monoxide detector? Traffic was light so it must have been the San Gabriel Valley air.
2. Returning through the Mt. Shasta area early on a chilly morning the gong sounded with the yellow triangle with a snowflake inside! The iDrive screen said "Outside temperature less than 37 degrees."
37 degrees? What is the significance of that temp? How do I adjust it to something meaningful like 32 degrees or even 28 degrees when the road surface starts to freeze?
I have searched the archives (an exercise in frustration) and my manual and cannot find anything about these alarms.
I feel confident there are some gurus out there who can explain this.
TIA
10-13-2009, 07:47 PM
#2
Members
Join Date: Feb 2009
Location: Kirkland, WA
Posts: 52
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2020 530e xDrive
Model Year: 2020
Engine: Hybrid
Originally Posted by Curmudgeon' post='1031814' date='Oct 13 2009, 07:34 PM
Just finished a 2100 mile trip to SoCA last week and received these two alarms. Fortunately both were innocuous. The 545i performed admirably throughout the trip.
1. While travelling the 210 (Foothill) Fwy in LA, there was no gong or yellow triangle but the iDrive screen displayed the single word "Poison." Does the microfilter system have a Carbon Dioxide or Monoxide detector? Traffic was light so it must have been the San Gabriel Valley air.
2. Returning through the Mt. Shasta area early on a chilly morning the gong sounded with the yellow triangle with a snowflake inside! The iDrive screen said "Outside temperature less than 37 degrees."
37 degrees? What is the significance of that temp? How do I adjust it to something meaningful like 32 degrees or even 28 degrees when the road surface starts to freeze?
I have searched the archives (an exercise in frustration) and my manual and cannot find anything about these alarms.
I feel confident there are some gurus out there who can explain this.
TIA
1. While travelling the 210 (Foothill) Fwy in LA, there was no gong or yellow triangle but the iDrive screen displayed the single word "Poison." Does the microfilter system have a Carbon Dioxide or Monoxide detector? Traffic was light so it must have been the San Gabriel Valley air.
2. Returning through the Mt. Shasta area early on a chilly morning the gong sounded with the yellow triangle with a snowflake inside! The iDrive screen said "Outside temperature less than 37 degrees."
37 degrees? What is the significance of that temp? How do I adjust it to something meaningful like 32 degrees or even 28 degrees when the road surface starts to freeze?
I have searched the archives (an exercise in frustration) and my manual and cannot find anything about these alarms.
I feel confident there are some gurus out there who can explain this.
TIA
The 37 degree warning is for when roads can be potentially icy, especially on bridges and overpasses. Even though the temperature is not below freezing, moisture from the air can be released at the cooler temperatures and turn into ice relatively quickly.
10-13-2009, 08:47 PM
#3
Contributors
Join Date: Mar 2009
Location: OK
Posts: 606
Likes: 0
Received 1 Like
on
1 Post
My Ride: 540i
Model Year: 2017
There is a sensor and it's only a guess that it generated your "Poison" warning. According to the manual the AUC automatic air recirculation button has to be in AUC mode (right LED on) for the system
to automatically shut off outside air.
Glad to hear your 545 performed like a champ!
Sensor for automatic air-recirculation control (IHKA High only)
The AUC sensor is installed at the top of the fan cowl. The sensor is exposed to the sideways downwind from the auxiliary
fan. The AUC sensor detects the following pollutant emissions from spark-ignition and diesel engines:
? Hydrocarbons (HC)
? Carbon monoxide (CO)
? Nitric oxides (nitrogen monoxide NO, nitrogen dioxide NO2)
to automatically shut off outside air.
Glad to hear your 545 performed like a champ!
Sensor for automatic air-recirculation control (IHKA High only)
The AUC sensor is installed at the top of the fan cowl. The sensor is exposed to the sideways downwind from the auxiliary
fan. The AUC sensor detects the following pollutant emissions from spark-ignition and diesel engines:
? Hydrocarbons (HC)
? Carbon monoxide (CO)
? Nitric oxides (nitrogen monoxide NO, nitrogen dioxide NO2)
10-13-2009, 08:57 PM
#4
Super Moderator
Join Date: Jan 2008
Location: So. Cal (SFV)
Posts: 17,508
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: 2011.5 Alpine White E90 M3 | Black Novillo Leather | Carbon Fiber Leather Trim | ZCP | ZP2 | M-DCT | Navigation | Moonroof | 6FL Mods: TMS 12.5mm spacers all around l Hawk HPS Brake Pads l OEM M3 Edition Grills l Paint Matched Side Gills l Key Hole D
most likely you were driving thru the recently burned areas of so cal and that caused the poor air quality and the "poison" warning...
10-13-2009, 10:53 PM
#5
Contributors
Yeah my wifes 3 does that and my old 5 did that as well, 37 degrees gives you a heads up, 32 would be too late as a warning 
10-14-2009, 03:17 PM
#6
Members
Thread Starter
Join Date: Jul 2009
Location: The Great PNW
Posts: 124
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2005 545i, Silber-grau/grau. Vanilla flavored except for cold WX pkg.
Originally Posted by martattack' post='1031862' date='Oct 13 2009, 08:47 PM
The 37 degree warning is for when roads can be potentially icy, especially on bridges and overpasses. Even though the temperature is not below freezing, moisture from the air can be released at the cooler temperatures and turn into ice relatively quickly.
Thread
Thread Starter
Forum
Replies
Last Post
Cal@Jlevi SW
Archived Sales
10
11-03-2010 09:47 AM