See also:

Nissan vehicle immobilizer system
The NISSAN Vehicle Immobilizer system will not allow the engine to start without the use of the registered key. If the engine fails to start using a registered key (for example, when interferen ...

If your vehicle overheats
If your vehicle is overheating (indicated by an extremely high temperature gauge reading), or if you feel a lack of engine power, detect abnormal noise, etc., take the following steps. ` ...

Engine serial number
MR20DE QR25DE The number is stamped on the engine as shown. ...