I have an 07 sedan ... with intelligent key. .... the car all of a sudden does not want to do anything .. the key fob does not lock or unlock the doors....the interior lights do not work at all the .....car will not start ... but what is weird the power seats still work....... the fob battery is brand new and so is the car battery itself ........im thinking the BCM might be bad or something with the CAN system.....i need help asap can anyone chime in?

 

Shot in the dark but easy....put the key fob in the key slot to the lower left of the steering column. If it starts then the fob battery is the issue.

If you are sure the car battery is good, disconnect the neg terminal for a few minutes and reconnect. Try again.

 

Did that a couple of times lol .... the car literally does nothing like theres no power going into the car

 

If you have a second FOB try that one.

Otherwise a trip to the dealer may be in your future.
Call AAA for a flatbed tow truck

Telcoman

 

Disconnect the battery overnight. Test it if you can. Hook it up in the morning. That should do it.
Otherwise call for a tow.

 

why do you say disconnnect battery over night ? what will that do?

 

it'll reset the ecu, not sure what else is will do but that kinda reboots the system.

 

WHich part did you do a couple of times? Put the fob in the slot? Or disconnect/reconnect the battery?

If you have not tried to disconnect the battery / reconnect after some time (hours?) - give that a try.

After that - isn't there a main breaker? Check them all...

If it all is unsuccessful - I'd take a volt-meter to the battery - and start tracing the power if at all possible.

 

The fob doesnt work period doesnt unlock or lock doors... when i put in slot still does nothing.....the car is acting as if there is no main battery...... fob has brand new battery..and the main battery is brand new.....like i said the weird part is the power seats work.....and literally nothing else ...like the car locked me out ..... or is in some security mode..main breaker? Where is it located?

 

Check all fuses just as a precaution.

When you say the fob has a brand new battery - how new? Has it ever worked? have you checked the obvious? Like - is the fob battery in backwards?? Checked it with a simple battery tester? Have another fob to test it with?

PS - trying to remember....but I don't think the seats need the key to work

 

Pick up a battery hydrometer and test the individual battery cells



If you still have the original battery it is probably time for a new battery if you have a dead cell

Telcoman

 

i towed it to dealer and let them deal with it...lol ill keep you updated