Switch on seat heater, function · gf9130p2000t · Mercedes-Benz WIS

GF91.30-P-2000T

Switch on seat heater, function

16.8.07

MODEL 211.0 /2
with CODE (401) Front deluxe seats, incl. seat heating and seat ventilation
with CODE (872) Electrically heated left and right rear seats
with CODE (873) Heated left and right front seats

Function requirements:

 C. 15R On

Function of heated driver or front passenger seats

Each operation of the left front HS [SIH] switch (N72/1s10) or the right front HS [SIH] switch (N72/1s11) is read in by the upper control panel control unit (N72/1). The upper control panel control unit (N72/1) transmits the enable command via the Controller Area Network Bus class B (interior) (CAN-B) for activating the integrated heated cushions (R13/1, R13/2 and R13/3, R13/4) to the

 HS [SIH] and seat ventilation control unit (N25/7)
(in vehicles with code (401) Front comfort seats, incl. seat heater and with code (872) Electrically heated left and right rear seats or in vehicles up to 31.5.05 with code (873) Heated left and right front seats)

 Front passenger SAM control unit (N10/11)
in vehicles as of 1.6.05 with code (873) Heated left and right front seats and without code (401) Front comfort seats, incl. seat heating and seat ventilation and without code (872) Electrically heated left and right rear seats)

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The feedback of the switched-on heating stage is transmitted via the integrated LEDs in the left front HS [SIH] switch (N72/1s10) or in the right front HS [SIH] switch (N72/1s11).

Switching on the heated driver or front passenger seats as a function of the interior temperature

 Interior temperature > 42 °C:
When stage 3 is switched on, stage 2 is switched on automatically.

 Interior temperature > 45 °C:
When stage 2 is switched on, stage 1 is switched on automatically.

 Interior temperature > 55 °C:
Heated seats HS [SIH] can no longer be switched on.

 If the value for the interior temperature is not available, the value of the outside temperature is used as a backup.

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Function of the left rear seat heater

(with code (872) Electrically heated left and right rear seats)

Pressing the left rear HS [SIH] switch (S51/3s2) is read in by the left rear door control unit (N69/3) via the switching bus, which forwards the switch-on command to the HS [SIH] and seat ventilation control unit (N25/7) via CAN-B depending upon the number of operations.

The HS [SIH] and seat ventilation control unit (N25/7) actuates the integrated heated cushions (R13/5, R13/6, and R13/9).

The feedback of the switched-on heating stage is transmitted via the integrated LEDs in the left rear HS [SIH] switch (S51/3s2).

Function of the right rear seat heater

(with code (872) Electrically heated left and right rear seats)

Pressing the right rear HS [SIH] switch (S51/4s2) is read in by the right rear door control unit (N69/4) via the switching bus, which forwards the switch-on command to the HS [SIH] and seat ventilation control unit (N25/7) via CAN-B depending upon the number of operations.

The HS [SIH] and seat ventilation control unit (N25/7) actuates the integrated heated cushions (R13/7, R13/8, and R13/10).

The feedback of the switched-on heating stage is transmitted via the integrated LEDs in the right rear HS [SIH] switch (S51/4s2).

 The operating and function indications of the heated seats (HS) are summarized in the table given below.

Actuation of the HS [SIH] switch (N72/1s10, N72/1s11, S51/3s2 or S51/4s2)	Actuated heating stage	Actuated heat output	Function indicator in the HS [SIH] switch (N72/1s10, N72/1s11, S51/3s2 or S51/4s2)
press once	Heating stage 3	71 to 100 %	3 red LEDs
press twice	Heat stage 2	41 to 70 %	2 red LEDs
press three times	Heat stage 1	0 to 40 %	1 red LED
press four times	Heated seats (HS) off	-	None
Press five times	Heating stage 3	71 to 100 %	3 red LEDs

Heated seats/seat ventilation switch location/task	On vehicles with code (873) Heated left and right front seats or with code (401) Front deluxe seats, incl. seat heating and seat ventilation	GF91.30-P-3004T
Heated rear seat switch, location/task	For vehicles with code (872) Electrically heated left and right rear seats	GF91.30-P-3006T
Upper control panel control unit, location/task/design/function	Model 211.0	GF54.21-P-4105T
	Model 211.2	GF54.21-P-4105TS
Heated seats/seat ventilation control unit, location/task	In vehicles with code (401) Front comfort seats, including seat heater and with code (872) Electrically heated left and right rear seats or in vehicles up to 31.5.05 with code (873) Heated left and right front seats	GF91.30-P-3005T
Front passenger-side SAM control unit with fuse and relay module, location/task/design	On vehicles as of 1.6.05 with code (873) Heated left and right front seats and without code (401) Front comfort seats, incl. seat heating and seat ventilation and without code (872) Electrically heated left and right rear seats	GF54.21-P-4111T
Electronic ignition switch control unit, location/task		GF80.57-P-4120T
Door control unit rear, location/task/function		GF72.29-P-4117T

Referenced documents

gf5421p4105t Upper control panel control unit, location/task/design/function
gf5421p4105ts Upper control panel control unit, location / task / design / function
gf5421p4111t Passenger-side SAM control module with fuse and relay module, location/task/design
gf7229p4117t Rear door control module, location/task/function
gf8057p4120t Electronic ignition/starter switch control module, location/purpose
gf9130p3004t Heated seats/seat ventilation switch location/task
gf9130p3005t Heated seats/seat ventilation control unit, location/task
gf9130p3006t Rear heated seat switch, location/task