I have an 05 3s and there's a thing that looks likea bump on the dashboard. It's located in the center of the dashboard, close to the windshield. It's on all of the 3's, and it looks like an alarm indicator light. The 05's didn't come with any alarm system, so i don't think it's for that. When i was test driving the car, i thought it was a light sensor for automatic headlights. My dad had a trailblazer, and it had that same bump, and the chevy dealer said it was used for the automatic headlights. Like the alarm, the 05's didn't come with auto lights. What the hell is it?
Thanks

 

i cant remember if i saw anything like that on my wife's 07 ... i just detailed it yesterday.. but i didnt think i saw anything on the dash.. sorry

 

It's the sensor/antenna for thecentral locking system.

 

are you certain about that? i was under the impression that it is the sensor for automatic windshield wipers. it is common for that part of the dashboard to crack around the "bump", so keep your eye on it and get it taken care of under warranty if you notice anything. there was a recall on this.

unfortunately, i cracked too late. my warranty expired slightly earlier than the crack appeared. there is a nice crack from front to back around the "bump" which i cannot get fixed under warranty. argh

 

Yup. I'm pretty sure. This question has been covered before, again and again.... 'Sides, where else would the remote pick up the signal from?

 

I've never seen that thing on any other car. huh.i thought it was some cool feature i never knew about. Thanks for the answer.

 

Actually I think that's the location for one of the sensors for the ACC system. Obviously in non-equipped cars it's just a dummy though.

 

the wiper senser is up under the rear view mirror.... from the oustide its a blue dot.

 

it's stated in the owner's manual, it's a sunlight/temperature sensor for the fully automatic A/C system.

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good look wineye. thanks for clearing that up.