Help needed trouble-shooting "Bulb of Exterior Lighting System Failed" warning

donanddemetra · 03-22-2019, 08:31 AM

To all,

This is my 1st post on this site as new BMW owner. Recently my 2011 328xi is displaying the "Bulb of the existing light system failed indicator.

All exterior lights appear to be working except for brake lights on trunk lid, they never seem to come on.

The wiring appears to be in good shape and the brake light bulbs appear to be good. I replaced all of bulbs BTW.

I am now trying to see if a fuse has blown, but I can't tell from the pictures on the fuse diagram which fuse applies to the trunk mounted brake light.

Can someone tell me fuse is associated to the brake light?
Additionally, is there something else I should be checking?

Any suggestions would be helpful.

Thank you,

Don

Igor_M5 · 03-22-2019, 05:03 PM

You checked the reverse bulbs?

donanddemetra · 03-22-2019, 09:35 PM

Yes, those as well.

Phyrexia · 03-24-2019, 03:43 PM

I got this warning indicator when my driver's side angel eye / halo bulb went out. My '11 has halogen headlights. Took me several checks before I realized which bulb it was.

Isn't there a list of fuse duties in the owner's manual?

03-22-2019, 08:31 AM	#1
donanddemetra Registered 0 Rep 3 Posts Drives: 2011 328i xDrive SULEV Join Date: May 2018 Location: Maryland iTrader: (0)	Help needed trouble-shooting "Bulb of Exterior Lighting System Failed" warning To all, This is my 1st post on this site as new BMW owner. Recently my 2011 328xi is displaying the "Bulb of the existing light system failed indicator. All exterior lights appear to be working except for brake lights on trunk lid, they never seem to come on. The wiring appears to be in good shape and the brake light bulbs appear to be good. I replaced all of bulbs BTW. I am now trying to see if a fuse has blown, but I can't tell from the pictures on the fuse diagram which fuse applies to the trunk mounted brake light. Can someone tell me fuse is associated to the brake light? Additionally, is there something else I should be checking? Any suggestions would be helpful. Thank you, Don Attached Images
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03-22-2019, 05:03 PM	#2
Igor_M5 2136 Rep 1,834 Posts Drives: Many, BMW. Join Date: Aug 2007 Location: New York City iTrader: (10) Garage List 2007;2013 E91 335is [10.00]	You checked the reverse bulbs?
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03-22-2019, 09:35 PM	#3
donanddemetra Registered 0 Rep 3 Posts Drives: 2011 328i xDrive SULEV Join Date: May 2018 Location: Maryland iTrader: (0)	Yes, those as well.
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03-24-2019, 03:43 PM	#4
Phyrexia Resident Pedant 503 Rep 792 Posts Drives: '15 335i 8AT Join Date: Nov 2017 Location: Limbo iTrader: (1)	I got this warning indicator when my driver's side angel eye / halo bulb went out. My '11 has halogen headlights. Took me several checks before I realized which bulb it was. Isn't there a list of fuse duties in the owner's manual?
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