Collision and Pedestrian Warning Malfunction

Alvinized52 · 09-29-2015, 07:52 PM

Has this ever happened to anyone? My car is less than 2 weeks old and I'm not sure what is causing this malfunction or if I'm doing something wrong. This warning has happened 2x but goes away. No mods have been done to my front bumper yet.

M3 Adjuster · 09-29-2015, 07:58 PM

The system is telling you that it is inactive and that usually would be from an issue with the sensor.
If there is not a way to calibrate or reboot this system... then a trip to the dealer is probably in order.

Alvinized52 · 09-29-2015, 10:55 PM

Quote:

Originally Posted by M3 Adjuster

The system is telling you that it is inactive and that usually would be from an issue with the sensor.
If there is not a way to calibrate or reboot this system... then a trip to the dealer is probably in order.

Thanks for the input! The funny thing is everything seems to be fine on the next restart 30mins later. This is the 2nd time this happened. Do you know if the sensor is the same for both faults?

SamS · 09-30-2015, 04:46 AM

Quote:

Originally Posted by Alvinized52

Thanks for the input! The funny thing is everything seems to be fine on the next restart 30mins later. This is the 2nd time this happened. Do you know if the sensor is the same for both faults?

Pretty sure the only sensor is the camera in front of your rear view mirror. Check to make sure it's not blocked with bug goo or other debris.

Biorin · 09-30-2015, 06:58 AM

Not sure if it's a related issue, but my collision warning seems to go off at completely random times as well. It may know I'm an Asian female and be acting preemptively, but other than that I can't figure out why...

dmk08 · 09-30-2015, 07:03 AM

9000 miles with Drivers Assist and I've never seen this go off. I would have it checked out.

fortressmaximus · 09-30-2015, 07:47 AM

This happened to me once during an especially torrential downpour. The warning left after the intensity of the rain went down.

Bmwguy11 · 09-30-2015, 01:08 PM

Quote:

Originally Posted by Biorin

Not sure if it's a related issue, but my collision warning seems to go off at completely random times as well. It may know I'm an Asian female and be acting preemptively, but other than that I can't figure out why...

Alvinized52 · 09-30-2015, 05:56 PM

Quote:

Originally Posted by SamS

Pretty sure the only sensor is the camera in front of your rear view mirror. Check to make sure it's not blocked with bug goo or other debris.

Wait... So is the sensor for these in the camera behind the mirror? not somewhere in the front bumper?

SamS · 09-30-2015, 09:27 PM

Quote:

Originally Posted by Alvinized52

Wait... So is the sensor for these in the camera behind the mirror? not somewhere in the front bumper?

Correct. It's the KAFAS camera in front of the rear view mirror.

Andrew115 · 09-30-2015, 09:35 PM

I had a similar frontal collision warning in July when the camera had bug splatter all over it. Cleaned the area and the warning was gone.

Bugs were bad.....

Alvinized52 · 09-30-2015, 10:07 PM

Quote:

Originally Posted by Andrew115

I had a similar frontal collision warning in July when the camera had bug splatter all over it. Cleaned the area and the warning was gone.

Bugs were bad.....

My car is squeeky clean. Did you have bug splatter on your rear view camera as well or just the bumper when this happened?

Btw, i hope you have a clear bra on that beautiful SS.

04RC51 · 09-30-2015, 10:15 PM

I believe they go off when direct sunlight hits the sensor essentially blinding it. Mine went off once and it was in so sunny I could barely see out my windshield.

Alvinized52 · 09-30-2015, 10:18 PM

Quote:

Originally Posted by 04RC51

I believe they go off when direct sunlight hits the sensor essentially blinding it. Mine went off once and it was in so sunny I could barely see out my windshield.

Hmmmm.... Very Good possibility! It was a super hot sunny day that day in SoCal...and the car was facing the sun.

Do you know this for sure?

Andrew115 · 09-30-2015, 10:18 PM

Quote:

Originally Posted by Alvinized52

Quote:

Originally Posted by Andrew115

I had a similar frontal collision warning in July when the camera had bug splatter all over it. Cleaned the area and the warning was gone.

Bugs were bad.....

My car is squeeky clean. Did you have bug splatter on your rear view camera as well or just the bumper when this happened?

Btw, i hope you have a clear bra on that beautiful SS.

I didn't have a pic of the windshield but it was bad. Just over the eye of the cam there was another big red streak. Hope you have the same result and it just needs a shine.

Alvinized52 · 09-30-2015, 10:32 PM

Quote:

Originally Posted by Andrew115

I didn't have a pic of the windshield but it was bad. Just over the eye of the cam there was another big red streak. Hope you have the same result and it just needs a shine.

I havent driven mine much until i have more protection... getting a full Xpel Stealth done next week on my SS M4. Not much bug problems here in SoCal... Just a bunch crazy road-raged reckless drivers.

04RC51 · 09-30-2015, 10:38 PM

Quote:

Originally Posted by Alvinized52

Hmmmm.... Very Good possibility! It was a super hot sunny day that day in SoCal...and the car was facing the sun.

Do you know this for sure?

I've seen it discussed here before and that's when mine went off. Did you search the forum for same issue?

Andrew115 · 09-30-2015, 10:40 PM

Quote:

Originally Posted by Alvinized52

Quote:

Originally Posted by Andrew115

I didn't have a pic of the windshield but it was bad. Just over the eye of the cam there was another big red streak. Hope you have the same result and it just needs a shine.

I havent driven mine much until i have more protection... getting a full Xpel Stealth done next week on my SS M4. Not much bug problems here in SoCal... Just a bunch crazy road-raged reckless drivers.

If the can isn't obstructed and it doesn't vanish a dealer visit is in order. Good luck and report back so others can reference.

That was on my way thru northern Maine talk about bug season. I could have been carried away.

Cooltones · 10-03-2015, 11:12 AM

I got this warning just after I had hardwired my V1. It seems that in my M4, that's got every option except the CCB's, there were TWO Black+Brown wires located near the rearview mirror cluster. One Black+Brown wire was apparently the ignition GROUND wire that was connected to the front camera, and another Black+Brown wire that is the ignition GROUND for the mirror compass.

When I tapped the Black+Brown wire that was part of the front camera, for my V1 GROUND, I got the errors "Collision Warning system malfunction/inactive". As soon as I changed the V1 GROUND to the Black+Brown wire for the mirror compass all problems went away.

I understand that the problem you describe is intermittent, AND you have not performed any mods to your car; however, just wanted to share this experience in case anyone else has faced this problem (READ: Just trying to help my fellow BMW buddies...).

OP, I see a lot of good troubleshooting suggestions here thus far. Try them out. If none of them work and you haven't tinkered with the area around the rearview mirror/front camera, my suggestion is that you take it back to the dealer for them to troubleshoot.
Good Luck,
-Tony

Alvinized52 · 10-03-2015, 02:47 PM

Update: So I spoke to the BMW service center. They said they've never heard of this issue before... But said for now to keep an eye on it since it goes away and take note of conditions when it comes on... They suggest it will be checked on my first oil change to save a trip since im almost there any way.

I will report back again with another update once i get my first service 500mi from now.

Fed · 10-07-2015, 10:17 AM

I have a new car as well. It has gone off twice on me as well. Both times in the morning, Condensation blocking the camera is the cause.

TahoeM3 · 10-07-2015, 10:33 AM

It happens to me in heavy rain. As others said, check for an obstruction.

09-29-2015, 07:52 PM	#1
Alvinized52 @ste4lthedF82 882 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	Collision and Pedestrian Warning Malfunction Has this ever happened to anyone? My car is less than 2 weeks old and I'm not sure what is causing this malfunction or if I'm doing something wrong. This warning has happened 2x but goes away. No mods have been done to my front bumper yet. Attached Images
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09-29-2015, 07:58 PM	#2
M3 Adjuster Banned 7906 Rep 11,785 Posts Drives: 1M, X1 M Sport, E46 325ic Join Date: Mar 2008 Location: Dallas, Tx iTrader: (0)	The system is telling you that it is inactive and that usually would be from an issue with the sensor. If there is not a way to calibrate or reboot this system... then a trip to the dealer is probably in order.
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09-30-2015, 07:03 AM	#6
dmk08 Gone Fishin’ 7318 Rep 12,125 Posts Drives: Walks Join Date: Jul 2012 Location: Atlanta iTrader: (19)	9000 miles with Drivers Assist and I've never seen this go off. I would have it checked out.
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09-30-2015, 07:47 AM	#7
fortressmaximus Captain 104 Rep 680 Posts Drives: BSM M4 Join Date: May 2009 Location: South Florida iTrader: (0)	This happened to me once during an especially torrential downpour. The warning left after the intensity of the rain went down.
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09-30-2015, 09:35 PM	#11
Andrew115 Major 328 Rep 1,450 Posts Drives: Silver Bullet Join Date: May 2013 Location: Charlotte NC iTrader: (0)	I had a similar frontal collision warning in July when the camera had bug splatter all over it. Cleaned the area and the warning was gone. Bugs were bad..... Attached Images
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09-30-2015, 10:15 PM	#13
04RC51 Large Member 951 Rep 1,749 Posts Drives: E92 M3, F82 M4 Join Date: May 2008 Location: NYC iTrader: (1)	I believe they go off when direct sunlight hits the sensor essentially blinding it. Mine went off once and it was in so sunny I could barely see out my windshield. __________________ 2008 E92 M3 (Engine swap completed), 2015 F82 M4
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10-03-2015, 11:12 AM	#19
Cooltones Happy M Driver 241 Rep 390 Posts Drives: E60 M5, F82 M4, G05 X5 Join Date: Nov 2014 Location: Silicon Valley Area iTrader: (0)	I got this warning just after I had hardwired my V1. It seems that in my M4, that's got every option except the CCB's, there were TWO Black+Brown wires located near the rearview mirror cluster. One Black+Brown wire was apparently the ignition GROUND wire that was connected to the front camera, and another Black+Brown wire that is the ignition GROUND for the mirror compass. When I tapped the Black+Brown wire that was part of the front camera, for my V1 GROUND, I got the errors "Collision Warning system malfunction/inactive". As soon as I changed the V1 GROUND to the Black+Brown wire for the mirror compass all problems went away. I understand that the problem you describe is intermittent, AND you have not performed any mods to your car; however, just wanted to share this experience in case anyone else has faced this problem (READ: Just trying to help my fellow BMW buddies...). OP, I see a lot of good troubleshooting suggestions here thus far. Try them out. If none of them work and you haven't tinkered with the area around the rearview mirror/front camera, my suggestion is that you take it back to the dealer for them to troubleshoot. Good Luck, -Tony __________________ 2020 X5 40i M Sport - The "Unicorn" (B&W Sound, Touch Screen, Heated/Cooled Cup Holders, Soft Close Doors, Acoustic Glass, Full Alcantara & Glass Controls, Luggage Compartment Package, Heated/Ventilated Seats, Laser Lights, Fog Lights) 2016 M4 Coupe; 2008 Dinan S1 M5; 2006 530i; 1998 328i
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10-03-2015, 02:47 PM	#20
Alvinized52 @ste4lthedF82 882 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	Update: So I spoke to the BMW service center. They said they've never heard of this issue before... But said for now to keep an eye on it since it goes away and take note of conditions when it comes on... They suggest it will be checked on my first oil change to save a trip since im almost there any way. I will report back again with another update once i get my first service 500mi from now.
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10-07-2015, 10:17 AM	#21
Fed Enlisted Member 0 Rep 37 Posts Drives: 2015 Alpine White M4 Join Date: Nov 2007 Location: North Potomac, MD iTrader: (0)	I have a new car as well. It has gone off twice on me as well. Both times in the morning, Condensation blocking the camera is the cause.
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10-07-2015, 10:33 AM	#22
TahoeM3 Major 410 Rep 1,025 Posts Drives: F-type R, GTR, X5 50i Join Date: Apr 2006 Location: Tampa, Fl iTrader: (0)	It happens to me in heavy rain. As others said, check for an obstruction.
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