Description Of Causes For AUTOSTOP Blocking, VEA Generation 2 [2018, 2020]: 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 blocked autostop.

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.