Vehicles Without Auto Stop/Start System

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

If the Remote Function Actuator (RFA) detects a valid smart key the driver will be able to start the engine. When the ignition switch is operated the Body Control Module/Gateway Module (BCM/GWM) assembly transmits a hardwired crank request. The crank request is transmitted to the Powertrain Control Module (PCM) via FlexRay connection. For additional information, Refer to: ANTI-THEFT - ACTIVE .

The energized starter relay supplies battery power to the starter solenoid, which energizes and causes the pinion gear to engage with the ring gear.

When the starter solenoid is energized it also closes high current contacts, which connects primary battery power from the Engine Junction Box 2 (EJB 2). Then the starter motor turns the engine.

When the engine reaches operating speed, the PCM then de-energizes the starter relay to disconnect power from the starter motor and disengage the pinion gear from the drive plate ring gear.