2005 cadillac cts has the airbag light on , i tried to diconnect the yelloy connectors under the passenger seat ( since even when a passenger is seated , the passenger airbag is off ) , to disconnect the positive battery cable , nothing worked , please any advice to turn it off ?

Could be a problem with the sensor in the seat. The system thinks someone is sitting in the seat and the seat belt is not fastened.

How to Fix Broken not working seat Heater 2003 10 Cadillac CTS CHEVY GMC SEAT HEATER TROUBLESHOOTING

look under seat make sensor for the seat did not come unplugged.

There are 2. One under the hood and one under the Drivers Left Knee under the Dash

I also have that same vehicle but, I'm sorry to say it does not have cruise. I also have a wiring issue. I replaced the interior (seats, carpet, door panels, and a few dash moldings) with duel power seats, however I through out the old seats before I noted the "wiring colors" for the passenger seat 'seatbelt' and 'airbag' sensor connections. The new seats came out of a 2003 crown vic (not a p71) and had totally different connections under the passenger seat. My '05 p71 did not even have the wires there for a power passenger seat, so I had to replace and wire them in from the harness that I removed from donor car. That actually wasn't TOO bad, and the seats work fine, but I don't know which wires go together for the seatbelt and airbag sensors, as the old wire 'colors' under the seat do not match the 'colors' on the connectors under the new power passenger seat. If you could tell me the colors of the wires to your original seat (passenger), for the seatbelt and airbag plugs you would be a great help in solving my issue with the "airbag" and "seatbelt" light that stays lit on the dash. If I can help with your problem in some way, even though my car does not have cruise, e-mail me and let me know how ([email protected]) .

I assume the solution is the same in a CTS as a CTS-V. Remove the plastic molding facing the rear. There are four plastic screws, Unscrew and lift the spare tire cover. Unscrew plastic screws on carpet covering quarter panels pull back for room to work. Each light assembly has two nuts, remove these and assembly will slide out for easy replacement. Since both lights stopped at once, the fuse may be the issue. The fuse box is under the rear seat cushion, behind the driver. Pull the seat up and forward. Pull levers out on each side of fuse box cover and lift. The diagram is inside the fuse box cover. It'll take a 15V. Note: Please take care in replacing and seat and proper seat belt placement. While you're in the backseat, check all the fuses, there's a second fusebox on the passenger side. Also, check floor behind driver's seat for wetness and water. That could cause a short as well. Good luck!

check the connection under the pass seat their is occupancy sensor that might have been disconnected view free video instructions on http://www.vehix411.com

If it is the passenger side, do you have some thing on your passenger seat? is it the air bag off light.

There is a connector under the seat. pusher it together to see if it is loose.

This may not necessarily be a passenger situation, much more common to be the drivers side....

This error will have a code associated with it, you need that to know the next step. A common problem is with the connections under the drivers seat. this seat moves automatically, and the connections seem to generate a low resistance, and then trip a code failure....

Whatever the code tells you, disconnect and reconnect all connections, on that circuit.

Remember that the air bag testing happens on power on, so to retest, you have to power off and restart..

Doc

The problem could be in the control module, but more than likely it is in the sensor under the passenger seat has lost its programming not registering a passenger. You will have to take to dealer and get them to reprogram the weight sensor.