Plz car gurus in the house. I lost my 1999 infiniti Qx4 sensor key. I have the spare one which is unsensor. My hope was to start using the unsensored spare key as a replacement but the key isn't starting the engine. It's opening d doors, fuel tank of the car but refuse to start the engine after revolving it. Plz what can i do to get this car on the road again?

Was the spare one starting the car before you misplaced the original key? Call 08165520837 to help fix back if you are in lagos

NwaTeacher1:
Plz car gurus in the house. I lost my 1999 infiniti Qx4 sensor key. I have the spare one which is unsensor. My hope was to start using the unsensored spare key as a replacement but the key isn't starting the engine. It's opening d doors, fuel tank of the car but refuse to start the engine after revolving it. Plz what can i do to get this car on the road again?

Immobiliser is not getting a response from the spare key.
You need another key programmed, if the spare is lacking immobiliser output.

It's always good to state where u are based. The key has to be programmed to start the car. If your spare does not have a chip embedded in it, it cannot be programmed to work in which case u have to get another key with chip for the programming to be successful

The key is doing what it ought to do. To avoid repetition, the person above me has nailed it.

Thanks for your suggestion. Plz do you know how much it will cost and place i will get the replacement key. I based in Owerri

Chuxxy4me:
It's always good to state where u are based. The key has to be programmed to start the car. If your spare does not have a chip embedded in it, it cannot be programmed to work in which case u have to get another key with chip for the programming to be successful

Go and get your key re-programmed by a key security expert. If that is too much for you to handle, simply get another ECU (brainbox).

U don't need to get a new key. U need to program that key. The programming is just to register it the immobilzer. But in toyota it's almost impossible programming another key without the transponder key available. I don't know if it's same with infinity.