Description Of Causes For AUTOSTOP Blocking, VEA Generation 1 [2018-2020]: General

The information in this document refers to engines in generation 1. From structure week 201717- a vehicle can have an engine in either generation 1 or generation 2.

HINT: If the vehicle was manufactured in the date range when engines in both generations were in use, see the parameter "Engine generation" under Diagnostics/Components/Engine Control Module (ECM)/Parameters in order to determine which generation the vehicle is from. (The parameter is only available on vehicles with structure week 201717-.) 

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 deals with 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.