Description Of Causes For System Requested AUTOSTART, VEA Generation 2 [2018-2022]: General

The information in this document applies to VEA engines of generation 2. From structure week 2017- a vehicle may have either a engine of generation 1 or generation 2 installed.

HINT: If the vehicle is manufactured in a time period where engines of both generations where available see the parameter "Engine generation" under Diagnostics/Components/Engine Control Module (ECM)/Parameters to determine the generation of the engine. (The parameter is only available in vehicles with structure week 2017-.) 

The Engine Control Module (ECM) detects and saves information about which causes have blocked the automatic start/stop of engine function and what has caused the system to request autostart in autostop mode. This document describes the causes of requested autostart.

HINT: If Engine Control Module (ECM) and/or Central Electronic Module (CEM) detected faults and stored fault codes for components/functions related to automatic start/stop of engine, it is not certain that the event has been stored as cause. 

Some of the reasons listed below will take the vehicle out of autostopped mode not by restarting the engine but by changing mode from autostopped to completely stopped engine. This requires the driver to manually start the engine again by using the start knob.