False BLIS Indications

[swamp2]

Has anyone experienced false positives with the lane change warning lights, i.e. lit up warning lights in side mirror(s) when no vehicles are anywhere near that side & zone? I got at least 10 of them a couple nights ago. It was dark and I was on a divided 4 lane road.

Did you get it fixed? What was it?

Of course, I'm just over 36k mi.... It's at the dealer now. TIA.

Sponsored

 

[JediMcMuffin]

Are your tail lights clean? Those are where the sensors are located.

 

[BroncoChallenger]

Can't say that I have on any of our vehicles that have it. However, I can fully see dirty tail lights (BLIS sensors) giving false positives. If the sensor is partially blocked it could act funky.

 

[Brian_B]

Not exactly the same but my wife had this with a 2013 Explorer. They replaced the sensors in the mirror once, that didn’t fix it though, they ended up replacing the BCM (going off memory, may have been another module)

 

[Headsong]

The BLIS units are not under the taillights, tho'. I changed my taillights, and the BLIS boxes are under one of the body pieces that are removed to do it.

 

[GoHawks63]

If you are close to a highway divider or a wall they can go off. Have that happen with my other cars as well.

 

[Ducati1098]

The BLIS units are not under the taillights, tho'. I changed my taillights, and the BLIS boxes are under one of the body pieces that are removed to do it.

On a Raptor it’s on the taillight assembly

 

[Headsong]

On a Raptor it’s on the taillight assembly

ah. Thx.

 

[swamp2]

Are your tail lights clean? Those are where the sensors are located.

Probably dusty from a long road trip, but not muddy dirty.

Sponsored