2007 nissan titan won't start
Chat Conversation Started
Are you experiencing a no crank (where the starter doesn't turn the engine) Or a crank but no start?
Also please tell me if the service engine soon light is flashing rapidly while attempting to start the vehicle?
starter does turn over
it is like there is a kill switch
What was the reason for replacing the battery?
or a lock out
old battery did not turn over engine over three years old
Are you using the original key?
While you are cranking the vehicle is there any light on in the dash?
Such as a Key light or security light?
key inside the car symbol on dash
That is called your NATS (Nissan Anti Theft System) The reason it is on is because the key you are using is not recognized as ever being programmed to the vehicle.
Have you had any new keys cut and programmed since you last used this key?
does that happen after replacing a battery?
Not normally but I have seen it a few times.
remote does not work now either
do you have any other keys there with you
Did you by any chance accidentally reverse he cables for a split second or jump the vehicle over backwards?
now that we have changed the battery, how do we get the vehicle to reconize the key?
It sounds like you might have a fuse blown and one of the control units that is used to authenticate the nats system may be eiher blown or not getting power.
where are they?
the fuses on the attachment on the positive battery connection look good, no breaks in them
The only way to program a key to the vehicle is to have all the keys together with the vehicle and to have the dealership perform a reinitialization of all keys and remotes at the same time. Any that are not present won't work any longer.
can the dealer do that in a remote location or only at the dealer
You need to look at all the fuses both in the in-cabin fuse box as well as in the under hood fuse box located near the firewall on the passenger side.
which ones are the nats fuses?
The vehicle would need to be taken to the dealer.
what fuse #s?
There is no NATS fuse in particular, There are a whole host of control units that the system uses, Which is why I want you to check all of them. Using a test light is the best method.
Thank you for using Just Answer. If you have any further questions please let me know.
thanks for your help
You are welcome, have a good day. After you end this chat you will be asked to accept the answer, if you were happy please press accept.