Clueless in Knoxville. What is this?

00Sebby

Senior Member
There is this sensor by the rear driver-side window. Does anyone know what it is for? If it's in the OM I cannot find it. It doesn't look factory and I haven't found any other sensors like it.
 

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There is this sensor by the rear driver-side window. Does anyone know what it is for? If it's in the OM I cannot find it. It doesn't look factory and I haven't found any other sensors like it.

I've got a '12 TE and it doesn't have anything like that. Did you buy the truck used? It looks aftermarket to me.
 
Definitely a microphone, and almost positive its a glass break sensor, but that's a huge one! Sucks that they screwed it into the plastic, if you ever remove it, you'll have a hold in the panel.

Easy way to tell if its a glass break sensor. Roll rear window down, arm alarm, wait for 30-60 seconds, then snap your finger next to the mic, alarm should go off without much noise.

I'd be willing to bet you also have a non-oem alarm keyfob too. If not, see if there's an alarm siren under the hood somewhere, that will tell you whether you bought a vehicle that had an alarm, and they either didn't give you the remote for it, or they removed the brain but left everything else there. I'd be more worried about getting stranded some day if the alarm is still in-tact and you don't have the keyfob for it. A dead battery is all it needs to reset itself and arm on its own once you jumpstart or recharge the battery, and if it has ignition kill, you won't be able to go anywhere until you disarm that alarm!
 
Thanks for the alarm ideas. I will chase that down... do the test and see if I can find the other components. I do not have a fob other than the two factory keys. I recently replaced the factory horn and removed the front bumper in the process. Did not see any sirens or anything else unusual. But I've never owned a vehicle with aftermarket alarm so I am not familiar with what and where components are.
 
Hit your rear window with a hammer if it makes a loud noise it's a glass break sensor, if it doesn't, then it's not or its simply disconnected lol
 
I figured it out. It is the beeper for the backup sensors. Apparently, even though we have the rear view mirror backup camera, someone wanted sound too. I thought the sound was part of the factory system.
 

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