Remote Keyless Entry Receiver
WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
The remote keyless entry receiver (1), which is located near the front pillar RH (2), is shown in illustration with the instrument panel removed. This remote keyless entry receiver receives the air pressure signal transmitted by the transmitter in each wheel.