Have you tested the battery to make sure it has enough capacity to start the car? Tried both fobs?

 

Speaking as a non-mechanic, I would guess your battery is dead. Enough juice to turn on lights, but not enough to turn over the engine. My battery went TU last year, and it was something like that.

 

If the battery isn't dead it could be a dirty connection. But it sounds like the battery doesn't have enough juice to start it. Lights and horn don't take that much to operate. Starting takes a lot. Make sure cables are tight on the other ends Hope that helps.

 

Battery??? Even though the car started perfect yesterday? How can I test the battery? I don't have a volt meter. What about FOB's that does make a difference? I'll try that right now.

Hey thanks guys!

 

Check to see if your interior light button to the left of the steering wheel might have been accidentally pushed and you left the interior lights on. Then remove the battery being careful to not screw up either terminal. Take it to your nearest AutoZone, O'Reilly's, NAPA, Sears, AutoPartsWarehouse, AdvanceAutoParts, or TwoGuys, etc. and have it stress tested. If you have the battery with you it can be turned in so they don't charge a "core charge" if you need a new battery.

 

Got some cables. Jump it from your DD or a friends ride. You don't need a voltmeter. If it starts .Go get battery tested.
If your ignition switch is green,that FOB is workin'.

 

Time for a new battery. Bet it has a dead cell.

C6 are pretty picky about the voltage needed.

 

Time to get a new battery. Interstate brand is a good battery, had much success with them. You might want to think about getting a battery charger too, if it sits for extended periods of time (two weeks or more). let us know what happens, Good luck!!:toilet:

 

Have you find the way to fix it? I have the similar issue.

 

I tried starting my '07 C6 this morning and couldn't get the car to start? Inside when I get into the car it seems normal, the green light for the starter switch is lite, only thing, is when I press it all goes dead? The engine light is on and the horn has gone off a few times. I checked the battery connections and they seem to be on there pretty tight. If you wait a few minutes after attempting to start the car the green light will come back on. But when you try to start I get the same results. Any sort of help would be appreciated.

Again its a 2007 C6 6 speed.

thank you for any sort of help you might be able to provide me with.

Replace the #41 power train control relay that is located in the fuse box under the hood. It is a $45 part. I was have the same problem and after replacing the relay 3 years ago I have not had the problem again.