GL 320 CDI (164.822) V6-3.0L DSL Turbo (642.940) (2008)
Power Seat Control Module: Description and Operation
GF91.29-P-5223GZ Component Description of Driver-Side Front Seat Adjustment Control Unit With
Memory
GF91.29-P-5223GZ Component Description Of Driver-side Front Seat Adjustment Control Unit With Memory
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with CODE (275) Memory package (driver seat, steering column, mirrors)
Location
The driver-side front seat adjustment control unit with memory is located under the seat frame of the driver seat; the front passenger front seat adjustment
control unit with memory (N32/2) is located under the seat frame of the front passenger seat.
Purpose (described for driver seat)
The driver front seat adjustment control unit with memory is responsible for:
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5-seat adjustment functions.
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the 2-steering column adjustment functions;
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Driver entry/exit aid through automatic seat and steering column adjustment into a position specified by the driver
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Sensing and storing actual position (last mode); can be performed key-related (depending on memory block number).
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Actuation of positions stored for adjustment functions
Design (described on driver seat)
Discrete inputs:
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Circuit 15R
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Terminal 30
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Terminal 31
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Hall sensors for seat adjustment motors on driver seat/steering column
Discrete outputs:
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Power supply 12 V (+ and -) for all seat adjustment motors
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Power supply 12 V (+ and -) for all steering column adjustment motors
Function (described for driver seat)
The driver front seat adjustment control unit with memory has the following functions:
Reading in sensors
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seat front raise/lower switch (S22s2)
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seat rear raise/lower switch (S22s4)
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backrest switch (S22s5)
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seat fore/aft switch (S22s3)
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Head restraint adjustment switch (by actuating the backrest switch in longitudinal direction)
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Memory switch (S91s9)
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memory button 1, 2, 3 switch (S91s14)
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Hall sensors for steering column forward/back as well as up/down
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Hall sensors for driver seat height at front or back
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Hall sensors for driver seat longitudinal adjustment or backrest adjustment
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Hall sensors for driver seat head restraint
Switching consumers using relays
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Steering column in/out motor (M20/1)