Overview
This document contains information on:
General
Function requirements
Function
General
For a stationary vehicle, the ECO start/stop function switches the engine off automatically and starts it again, as soon as the driver wishes to drive off.
Function requirements
Ignition ON (circuit 15)
Engine management ON (circuit 87M)
Coolant temperature between 60 °C and 115 °C
Transmission oil temperature between 10 °C and 120 °C (automatic or dual-clutch transmission)
Engine speed in specified value range
Transmission position D, P, or N (automatic or dual-clutch transmission)
Accelerator not operated
Service brake actuated up to standstill of the vehicle
Adequate vacuum in the brake booster
No control intervention functions from the brake and driver assistance systems
Engine hood closed
Crash signal not available
On-board electrical system voltage sufficient
Interior temperature regulated
No previous maximum full-stop braking
Function
During the drive, the involved control units check the required signals for an automatic stop. For this purpose, the combustion engine control unit reads out all relevant data and issues the stop enable during vehicle stillstand if applicable.