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Energy Management, Function - GF54.10-P-0003RD

Model 172.4 

Shown on model 172.4 as of 01.03.2016 

G13847548Courtesy of MERCEDES-BENZ USA

Shown on model 172.4 up to 29.02.2016 

G13847549Courtesy of MERCEDES-BENZ USA

Function requirements, general 

Energy management, general 

Energy management manages the provision (supply) and consumption (management) of electrical energy with the aim of ensuring the startability of the engine and a stable supply to all electrical consumers.

The following components are involved in energy management:

Transport mode (as of 01.06.2012): 

The transport mode is activated in the production plant at the end of the production process, and it sets the overall vehicle into a defined special condition.

With targeted interventions in individual electronics systems the following is achieved:

The transport mode remains active on its way from the production plant to the dealers and company-owned sales and service outlets around the world up to the so-called delivery inspection and the final hand over to the end customers.

IMPORTANT The transport mode is automatically deactivated from a total distance traveled of more than 350 km whereupon it cannot be activated again. Up to this limit, the transport mode can be deactivated using the diagnosis tester or a defined key combination at any give time and activated with the diagnosis tester again.

The fault memory is not actively deleted when the key combination is used for deactivation. This means that the "Transport mode active" entry remains stored. This must be deleted using the diagnosis tester when the vehicle is inspected for the first time.

To support the processes in Sales and Logistics, the vehicle's possible remaining idle time and, if necessary, appropriate care instructions for the on-board electrical system battery are shown on the instrument cluster when the transport mode is active.

The energy management system's continuously determined condition of the on-board electrical system battery is rendered fully transparent at any given time without the use of any additional measuring instruments during the vehicle delivery period.

This display provides the operating personnel with specific instructions on what to do to guarantee a high delivery quality with regard to the on-board electrical system battery.

The individual transport mode functions are split up across numerous individual systems. Central control is through the energy management system.

According to the energy management specifications, targeted interventions (function restrictions or changes) are carried out in individual electronics systems:

The following tasks are carried out by the energy management system:

IMPORTANT Model 172.4 as of 12/1/14

Customs inspection: 

To make inspection of the vehicle interior and the luggage compartment easier, the central locking can be unlocked temporarily by pressing the hazard warning system button (N72/1s5) in the upper control panel control unit (N72/1) with circuit 15C ON. The time and the kilometer reading at which this action was performed are stored.

IMPORTANT Model 172.4 as of 12/1/14

Winter package: 

The mirror heaters and, on vehicles with engine 651.9, the PTC heater booster (R22/3) are enabled at low outside temperatures. The blower can be operated at full power in order to demist/de-ice windows and outside mirrors.

Major assemblies coordinator 

The major assembly coordinator is integrated into the CDI control unit or the ME-SFI control unit and forms the interface between the energy management system and the alternator. The CDI control unit or the ME-SFI control unit communicates with the alternator over the drive train LIN. The major assembly coordinator regulates the alternator's power output to match the energy management system specifications, taking engine load into consideration.

The recording and evaluation of the relevant variables for this are conducted by the following components:

Energy management contains the following subfunctions, which are described in separate documents:

IMPORTANT The ECO start/stop function energy management subfunction is looked at from the viewpoint of energy management. Information on the start/stop function engine management subfunction is available in a separate function description.

  Engine on energy management, function   GF54.10-P-1060RD 
  Engine off energy management, function Model 172.4 up to model year 2017 GF54.10-P-1050RD 
  Engine off energy management, function Model 172.4 as of model year 2017 GF54.10-P-1050RDM
  ECO start/stop function energy management, function Model 172.4 as of model year 2017
Model 172.4 up to model year 2017 with code B03 (ECO start/stop function)		 GF54.10-P-1040RD 
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