Adjust steering column, function - GF46.15-P-2000R

MODEL 230

Fig 1: Adjust Steering Column Function Diagram

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Networking of components

Function requirements

no overvoltage/undervoltage
circuit 15c, 15R, 15 ON
driver's door open or
front passenger door open:
steering column normalization

Manual adjustment of steering column:

The steering column adjustment raise/lower, forward/back switch (S59/1s1) is read in by the steering column module (N80) and transferred cyclically to the passenger compartment CAN. The driver-side SAM control module (N10/10) then actuates the steering column adjustment motor group (M20) according to the adjustment request.

Automatic adjustment with memory feature

Additional prerequisites:

valid memory block number

The 3 memory positions, located in the left seat adjustment switch group (S91/2) are called via:

switch for memory position 1 (S91/2s6)
switch for memory position 2 (S91/2s7)
switch for memory position 3 (S91/2s8)

The positions on the driver's side are stored with key codes. For this, the DI control module (N73) transmits the memory block number corresponding to the key code to all participating control modules.

The key-dependent position is stored and the steering column is adjusted to the stored position by combining information from the left door control module (N69/1) and the DI control module (N73) .

A CAN message is transmitted via the door control module to the driver-side SAM control module (N10/10) , which then actuates the steering column adjustment motor group (M20) according to the adjustment request.

Adjustments that can be called using the memory feature

The following adjustments can be set on the driver's side using the memory feature:

Seat
Head restraints
Steering column
Outside mirrors
Multicontour backrest (SA)

The following adjustments can be set on the passenger side using the memory feature:

Seat adjustment
Head restraints
Multicontour backrest (SA)

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