Details of installation of the control panel for the operation of heating / ventilation / air conditioning systems (HVAC) (N22)
1. Turn on the auxiliary battery and connect it to the standard battery, then disconnect the negative cable from the latter.
7 - Auxiliary battery
8 - Module positive wire terminal
9 - Terminal of the negative wire of the module
W10 - Battery Ground
2. Remove the cover of the central (console) instrument panel sections (see chapter Body).
3. HVAC operation control panel (N22) is simply snapped into the latches of the cover and must be pulled outward to remove.
4. Installation is carried out in the reverse order - make sure that the panel latches are securely snapped into place.
Note. After replacing the HVAC control panel, it is necessary to synchronize the servomotors using the STAR DIAGNOSIS diagnostic scanner connected to the vehicle's DLC connector (see illustration STAR DIAGNOSIS reader connection diagram (0100) to the DLC diagnostic connector (Х11/4)), - contact a Mercedes-Benz dealer. Also clear the OBD processor memory.