No Code but Car Cranks without
starting on a
2000 Nissan Maxima
Occasionally the car would crank
strongly but not start. There was no hint of of it beginning to fire. If I
waited a few minutes and tried again the car would start up without any problem. The MIL
light is not on and no codes are present. When I took it in the dealer noticed I
had a Mobile "SpeedPass" device on my keyring. This is an RFID transponder that
interferes with the NATS—Nissan Anti Theft System. The NATS also uses a RFID
transponder embedded in the key handle. It is apparent as a blue segment within
the black plastic. The
system uses an antenna in the steering column to recognize the correct RFID
response from the key. The speed pass is also an RFID transponder. Occasionally
it would interfere with the NATS system. The response is to cut off the fuel
pump, presenting exactly the symptoms I was seeing. The technician said that
when this happens the red security LED stops blinking and stays on red to
indicate NATS failure. A simple solution is to move the speed pass away
from the steering column when starting.
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