Hazard Button Lights Up

fwshaw · 09-04-2021, 10:20 AM

Recently I noticed the light on the hazard warning system button in the center of the console lights (red triangles) up for 3 to 4 seconds when I touch any of the four exterior door handles. After 3 or 4 seconds the light turns off. If I touch the door handle again it once again illuminates.

The 2021 X5 is locked; the red alarm light under the rear view mirror is flashing every two seconds. I do not have a key with me nor is the key in range to unlock the doors. The external hazard lights do not activate (flash). Only the button light is turned on.

I've found no information about this in the manual. Any insight about this "feature" would be appreciated.

Qsilver7 · 09-04-2021, 11:44 AM

BMWs for decades have specific lights turn on in the interior when the vehicle is awakened. This AWAKE state usually occurs when the door handles are initiated or a remote key lock/unlocks the doors etc…these are initiations that assumes that the car is being approached or about to be entered etc.

The haz button light illuminating is a sign that the something has activated things on this communication bus. IN the old E chassis BMWs…it was the P-bus that illuminated a little orange light next to the gear shift lever. ON your G chassis BMW…it is probably now the haz switch.

You can probably extrapolate this older tech info to your new G chassis…you may no longer have a “P-bus”…but the underlying communication architecture is probably the same:

fwshaw · 09-08-2021, 12:22 PM

Thank for taking time to comment. Interesting insights.

marthala · 02-09-2024, 07:14 PM

my 2012 X5 today when I click to unlock alarm sounded with low sound then nothing happens. It will not unlock so opened with key , no dash lights or any lights were on except the hazard light button flashes and nothing turns on. Battery installed couple of weeks back. What should I check?

TurtleBoy · 02-09-2024, 07:21 PM

Quote:

Originally Posted by marthala

my 2012 X5 today when I click to unlock alarm sounded with low sound then nothing happens. It will not unlock so opened with key , no dash lights or any lights were on except the hazard light button flashes and nothing turns on. Battery installed couple of weeks back. What should I check?

Welcome to the forum. This is the G05 forum, you will have a much better chance of getting help posting on the E70 forum. Good luck.

https://www.xbimmers.com/forums/forumdisplay.php?f=88

09-04-2021, 10:20 AM	#1
fwshaw New Member 9 Rep 27 Posts Drives: BMW X5 xDrive 40i Join Date: May 2021 Location: U.S.A. iTrader: (0) Garage List 1999 Honda Prelude [0.00] 2021 X5 iDrive40i [0.00]	Hazard Button Lights Up Recently I noticed the light on the hazard warning system button in the center of the console lights (red triangles) up for 3 to 4 seconds when I touch any of the four exterior door handles. After 3 or 4 seconds the light turns off. If I touch the door handle again it once again illuminates. The 2021 X5 is locked; the red alarm light under the rear view mirror is flashing every two seconds. I do not have a key with me nor is the key in range to unlock the doors. The external hazard lights do not activate (flash). Only the button light is turned on. I've found no information about this in the manual. Any insight about this "feature" would be appreciated.
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09-04-2021, 11:44 AM	#2
Qsilver7 Major General 4448 Rep 7,488 Posts Drives: F06 650ix GC / F15 X5 50i Join Date: Oct 2016 Location: Indiana, USA iTrader: (0)	BMWs for decades have specific lights turn on in the interior when the vehicle is awakened. This AWAKE state usually occurs when the door handles are initiated or a remote key lock/unlocks the doors etc…these are initiations that assumes that the car is being approached or about to be entered etc. The haz button light illuminating is a sign that the something has activated things on this communication bus. IN the old E chassis BMWs…it was the P-bus that illuminated a little orange light next to the gear shift lever. ON your G chassis BMW…it is probably now the haz switch. You can probably extrapolate this older tech info to your new G chassis…you may no longer have a “P-bus”…but the underlying communication architecture is probably the same: __________________ 2015 F06 650ix Gran Coupe`(Moonstone/Cohiba Brown)\| 2014 F15 X5 50i MSport (Space Gray/Mocha) Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.
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09-08-2021, 12:22 PM	#3
fwshaw New Member 9 Rep 27 Posts Drives: BMW X5 xDrive 40i Join Date: May 2021 Location: U.S.A. iTrader: (0) Garage List 1999 Honda Prelude [0.00] 2021 X5 iDrive40i [0.00]	Thank for taking time to comment. Interesting insights.
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02-09-2024, 07:14 PM	#4
marthala Registered 0 Rep 1 Posts Drives: 2012 BMW X5 Join Date: Feb 2024 Location: Cary, NC iTrader: (0)	my 2012 X5 today when I click to unlock alarm sounded with low sound then nothing happens. It will not unlock so opened with key , no dash lights or any lights were on except the hazard light button flashes and nothing turns on. Battery installed couple of weeks back. What should I check?
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