[jdskycaster]

My 17' Armada started doing the same thing four weeks ago and has been very intermittent. Because some have had luck with the brake switch I ordered one:

Part No.: 25320-AX10A
SWITCH ASSY-STOP LAMP

from Nissanpartsdeal along with the cruise control switch:

Part No.: 25300-AT30A
SWITCH ASSY-ASCD CANCEL
Replaced by: 25300-3RA0A

The OEM stop lamp switch installed in my vehicle (I have owned my Armada since new) was indeed manufactured by Valeo and was all black in color. The replacement part I ordered was black and green in color. I have replaced the switch and will see how it works. After reading through this thread I don't have a lot of faith that it will be fixed for good. Based on some posts I wonder if there could be an issue with the position of the switch in the vehicle based on the plastic piece that holds the switch in place. That could be flexing/moving over time and causing a similar issue to an intermittent contact in the switch. I have not replaced the cruise control cancel switch yet because I want to see if changing the brake switch makes any improvement at all.

My only ask in here is some posters are coming into this thread, posting that they have had some success with their dealer but then not following up with what actually took care of the problem (if anything). Please take a minute to post a follow up with an explanation of what the dealer did do to successfully repair. I will definitely post my DIY experience because my vehicle has 46K miles and is now out of warranty. I like it too much to just trade it off yet. We shall see.

Update: Almost two weeks now since I replaced the Stop Lamp Switch Assy. with the part I listed above. Prior to replacing it my Armada was having the BCI malfunction on every drive even if it was only a few miles. So far it has not returned. Will keep updating this post as time goes on.

 

[jdskycaster]

My 17' Armada started doing the same thing four weeks ago and has been very intermittent. Because some have had luck with the brake switch I ordered one:

Part No.: 25320-AX10A
SWITCH ASSY-STOP LAMP

from Nissanpartsdeal along with the cruise control switch:

Part No.: 25300-AT30A
SWITCH ASSY-ASCD CANCEL
Replaced by: 25300-3RA0A

The OEM stop lamp switch installed in my vehicle (I have owned my Armada since new) was indeed manufactured by Valeo and was all black in color. The replacement part I ordered was black and green in color. I have replaced the switch and will see how it works. After reading through this thread I don't have a lot of faith that it will be fixed for good. Based on some posts I wonder if there could be an issue with the position of the switch in the vehicle based on the plastic piece that holds the switch in place. That could be flexing/moving over time and causing a similar issue to an intermittent contact in the switch. I have not replaced the cruise control cancel switch yet because I want to see if changing the brake switch makes any improvement at all.

My only ask in here is some posters are coming into this thread, posting that they have had some success with their dealer but then not following up with what actually took care of the problem (if anything). Please take a minute to post a follow up with an explanation of what the dealer did do to successfully repair. I will definitely post my DIY experience because my vehicle has 46K miles and is now out of warranty. I like it too much to just trade it off yet. We shall see.

Update: Almost two weeks now since I replaced the Stop Lamp Switch Assy. with the part I listed above. Prior to replacing it my Armada was having the BCI malfunction on every drive even if it was only a few miles. So far it has not returned. Will keep updating this post as time goes on.

Updating my post again. It's been nearly 3 months and just over 10K miles of driving with no BCI Malfunction error. Just replacing the stop switch on mine took care of the error completely. If you have this error definitely replace that switch first. I did order the cruise control switch (ASCD CANCEL) but did not replace it yet.

 

[jdskycaster]

I recently encountered an issue with the BCI system where it was indicating that "BCI warning system unavailable". I took it to the dealership to have them check it out. The system had started working properly again prior to arriving at the dealership, but the tech indicated that they pulled a code "C1B55" radar blockage right rear. They suggested that the vehicle undercoating process may have coated the radar sensors causing an issue. Does this make sense? I have had the vehicle sprayed each year with the "Corrosion Free" rust check system since it was purchased new in 2018 (currently has 30K kms on it). The tech said that he blew air inside the rear fender but would have to remove the bumper covers to clean the sensors if the issue continues. Would the rust check process have an impact on the radar sensors?

If the tech was able to pull that specific code than yes, I would assume whatever it is you are having sprayed on the underside of the vehicle could have covered up that sensor and thrown the code. If they clear the code, clean the surface and the error comes back again you could have another problem with a sensor failure not related to the coating you had applied.