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Functional Scope Of Vehicle, PSM, Function - GF54.21-D-3006TSB

Model 447, 448 

with code ED5 (Parameterisable special module) 

with code XM7 (MOPF II) 

Model 907, 910 

with code ED5 (Parameterisable special module) 

with code XJ4 (Modification year G4-I) 

Interior CAN interface 

On the one hand, the parameterizable special module (PSM) control unit (N26/16) reads in information or CAN signals via the "Interior CAN" interface, which is located on the interior CAN (CAN B). Much of this information is available to the user in the signal pool in the form of PSM signals for parameterization. On the other hand, the PSM control unit can send functional requests to the vehicle, such as "Switch on high beam", "Prevent engine start" etc., via the "Interior CAN" interface.

The control units that receive the respective request from the PSM control unit decide autonomously how to handle the request.

Options 

The major portion of the signals from the signal pool contain precisely those values or information that the parameterizable special module (PSM) control unit (N26/16) reads in from the relevant CAN signals of the interior CAN.

The internal modules of the parameterizable special module (PSM) control unit (N26/16), such as the "Working speed control" module, provide additional values or information that are generally also available in the signal pool in the form of signals for parameterization.

Standard functions (lighting, window lifters, central locking system etc.) are parameterized via the "Interior CAN" module.

The parameterization of special functions (working speed control, speed limit, step etc.) can be conducted with the aid of the "Special functions" menu item.

The following standard functions can be parameterized in the expert coding using the "Interfaces - Interior" menu item:

IMPORTANT To ensure that the parameterizable special module (PSM) control unit (N26/16) sends requests to the interior CAN, the respective module must be switched on via the Interface → Interior CAN bus → Activation menu. Example: To enable the parameterizable special module (PSM) control unit (N26/16) to send the "Switch on high beams" request to the interior CAN, the "Exterior lighting" module must be activated.

The individual menu items are as follows:

"Activation" 

This menu item is used for activation of the required modules such as "Exterior lighting", "Alarm", "Sliding door" etc.

"Exterior lighting" 

The "Exterior lighting" menu item contains the parameterization options for activation of typical exterior light functions, e.g.:

IMPORTANT The module properties can be parameterized under "Properties". It is generally recommended to change only those properties that are directly linked to the requested function.

"Alarm" 

The "Alarm" menu item contains the parameterization options for alarm functions in the event of an alarm issued by the anti-theft alarm system (ATA).

IMPORTANT The parameterization options for the alarm functions of emergency vehicles (e.g. changing headlamps) are located in the SAM control unit (N10) (model 907, model 910) or signal acquisition and actuation module (SAM) control unit (N10/1) (model 447, model 448).

"Sliding door" 

The "Sliding door" menu item contains the parameterization options for sliding door functions.

"Front window" 

The "Front window" menu item contains the parameterization options for the "Actuation of left or right window lifter" functions.

"Central locking system" 

The "Central locking system" menu item contains the parameterization options for the "Lock or unlock vehicle" functions.

"Windshield wiper" 

The "Windshield wiper" menu item contains the parameterization options for the windshield wiper functions.

"ESP system fallback" 

The "ESP system fallback" menu item contains the parameterization options for the "Reduction of ESP® sensitivity" function.

IMPORTANT ESP® currently only supports stages 0 and 3:

Stage 0: ESP® is active (no system fallback).

Stage 3: ESP® is completely deactivated (for rail vehicles).

"Other functions" 

The "Other functions" menu item contains the parameterization options for functions that cannot be assigned to previous categories, e.g.:

IMPORTANTIMPORTANT: 

The ECO start/stop function is only permitted to be deactivated temporarily and in certain exceptional circumstances, e.g. for emergency vehicles en route to their deployment site with an activated signaling system. Permanent deactivation of the ECO start/stop function is not permissible, as - in this instance - the limits for the exhaust gas of vehicle would then not be able to be maintained and this in turn would terminate the vehicle's operating permit.

For all queries pertaining to deactivation of the ECO start/stop function, the customer can contact their local Mercedes-Benz sales and marketing company or the body manufacturer support team.

  Overview of system components for parameterizable special module (PSM)   GF54.21-D-9998TSB
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