LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2000 >> E430 Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seats, Restraint Systems - Basic Knowledge - 210 Chassis >> Basic Knowledge >> Ventilation Mode Function - GF91.30-P-2005A
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Ventilation Mode Function - GF91.30-P-2005A

MODEL 210 as of 1.7.99 up to 31.5.01, 210 as of 1.6.01 with CODE (401a) Seat ventilation of front seats 

Function prerequisites: 

The ventilation mode has three stages:

The motor speed,

  1. slow
  2. medium
  3. fast

is switched on/off  and changed using the switch for HS and seat ventilation, front left (N25/7s1)  and the switch for HS and seat ventilation, front right (N25/7s2)  in the control module for HS and seat ventilation, front (N25/7)  .

Up to 31.05.01 with code (401a) seat ventilation for front seats  The ventilation mode is, if there are no faults, started at stage 3  , switched back automatically after 10 min  to stage 2  and after an additional 10 min  to stage 1  .

It is possible to switch off or change the seat ventilation to another ventilation stage at any time by means of the switch.

As of 01.06.01 with code (401a) seat ventilation for front seats,  the timer control of the ventilation mode for front seats is discontinued. The selected ventilation stage (I, II, III) of the seat ventilation remains switched on and is not  switched back automatically  .

It is possible to switch off or change the seat ventilation to another ventilation stage at any time by means of the switch.

Timer control of seat ventilation up to 31.05.01 

Fig 1: Identifying Ventilation Mode Function
G04632700Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Operation of seat ventilation via switch: 

Switch actuation N25/7s1 N25/7s2 Operating condition of seat ventilation after actuating switch Function indicator lamp (LED)
Off position OFF none
pressed 1 x Ventilation stage III LED 1, 2, 3
pressed 2 x Ventilation stage II LED 1, 2
pressed 3 x Ventilation stage I LED 1
pressed 4 x OFF none
pressed 5 x Ventilation stage III LED 1, 2, 3
  End ventilation mode function   GF91.30-P-2006A 
  Shutdown on faults for control module function   GF91.30-P-2007A 
  Switch for heated seats/seat ventilation - location/task   GF91.30-P-3004A 
  Control module for heated seats and seat ventilation - location/task   GF91.30-P-3005A