GF91.25-P-2016LE Massage Function For Dynamic Seat, Function

GF91.25-P-2016LE Massage Function For Dynamic Seat, Function
- with CODE (432) Left and right dynamic multicontour seat as of Model Year 2009 /YoM 08 [model 216.3]
- with CODE (432) Left and right dynamic multicontour seat as of Model Year 2009 up to 2010 /YoM 08 up to YoM 09 [model 221.1]

Function requirements, general
^ Circuit 15R or circuit 15 ON
^ Pressure supply active
^ No on-board electrical system limp-home mode
^ Status of pneumatic pump for dynamic seat control (M40/1) on interior CAN (CAN B) OK

The massage function is described at the driver seat for left-hand drive vehicles by way of an example, but this also applies for the front passenger seat.

Function description for dynamic seat massage function, general
To prevent any tension in the back during long journeys, the dynamic seat is equipped with a massage function. By actuating the multicontour seat quick select button (A40/9s4) in the front central operating unit (A40/9) and selecting submenu "Pulse mode" on the COMAND display (A40/8) (without code (867) SPLITVIEW) or SPLITVIEW display (A40/10) (model 216 as of YoM 09 with code (867) SPLITVIEW), the air cushions in the 7-row massage insert in the lumbar support are alternately inflated and deflated after selecting the massage program.

The massage function can be individually set using the turn/push control (A40/9s11):
^ Slow and non-intense massage
^ Slow and intense massage
^ fast and non-intense massage
^ fast and intense massage

On model 216 as of YoM 09 / model year 2010, the massage function can also be activated via the freely programmable button (A40/9s10) in the front central operating unit. However, previously the massage function must be assigned to the freely programmable button. For this purpose select menu "Vehicle", then submenu "System settings" and the menu "Select favorites" via the menu guidance on the SPLITVIEW display (with code (867) SPLITVIEW) or COMAND display (without code (867) SPLITVIEW) with the rotary pushbutton.

Abort conditions
- Inflation or deflation timeout
- Adjustment request based on memory
- Adjustment request based on PRE-SAFE

For manual inflation or deflation as well as for adjustment request based on memory, the massage function is only interrupted for the duration of the inflation or deflation process.

Blocking
When the following fault is active, the function is blocked for the running ignition sequence:
- Inflation or deflation timeout

The dynamic seat massage function is structured as follows:
^ Start and end
^ Sequence of programs
^ Valve control
^ Compressed-air supply

Start and end
By actuating the multicontour seat quick select button in the front central operating unit the submenu "Multicontour seat" is activated on the COMAND display (without code (867) SPLITVIEW) or SPLITVIEW display (model 216 as of YoM 09 with code (867) SPLITVIEW).

Select submenu "Massage" (as of YoM 09) or "Pulse mode" (up to YoM 08) after selecting the driver or passenger seat. Pressing the rotary pushbutton downwards or upwards or turning it enables the massage function to be individually adjusted in 4 different programs or to be switched off.
- Stage "0" off
- Massage stage "1, slow and weak"
- Massage stage "2, slow and firm"
- Massage stage "3, fast and weak"
- Massage stage "4, fast and firm"

Sequence of programs

Massage (pulse mode) 1 "Slow and weak"
As long as the massage function is active, the contour of the 1st layer of the massage insert is sequentially altered by inflating, maintaining and relieving the pressure. After a defined waiting time, the cycle for layer 2 is started according to the same pattern. If the waiting time has elapsed during inflation of layer 7 of the massage insert, the cycle is continued with layer 6 if the so-called turn period has expired. The layers are then actuated in reverse order down to layer 1. The cycle starts again from the beginning.

Massage (pulse mode) 2 "Slow and strong"
The program sequence is the same as for "Pulse mode 1 slow and weak", except that the air cushions are inflated at higher pressure and the program sequence lasts longer.

Massage (pulse mode) 3 "fast and weak"
As long as the massage function is active, the contour of the massage inserts is sequentially altered, first by inflating layer 1 for a defined inflation period, maintaining the pressure for a defined holding time and then deflating layer 1 for a defined deflation period. After a defined waiting time, the cycle for layer 2 is started according to the same pattern.

If the waiting time has elapsed during inflation of layer 7 of the massage insert, the cycle is continued with layer 1.

Massage (pulse mode) 4 "fast and strong"
The program sequence is the same as for "Pulse mode 3, fast and weak", except that the air cushions are inflated at higher pressure and the program sequence lasts longer.

The difference in pressure between a deflated and an inflated massage cushion is approx. 150 mbar. A wave motion is generated through alternate inflation and deflation of the massage cushions. After approx. 6 to 12 minutes, depending on the selected program, the massage function is automatically ended and the massage insert air cushions are deflated.

Valve control
The valves are located in the massage insert. They are actuated by the left front dynamic seat control unit (N32/19) with 220 V DC.

Compressed-air supply
The air supply, required for inflating the air cushions, is provided by the pneumatic pump for dynamic seat control.