Quote:
Originally Posted by SchnellM3
I was being a smart ass
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Even so, you are basically correct since you cannot refuse to let the dealership stick the key in the slot. They are going to do that as part of the standard procedure when taking you car for the service appointment.
That said I have no idea if the keyfob actually reads engine RPM data. It might be accessible only by attaching diagnostic equipment to the OBDII.