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josebmw · 06-02-2012, 10:23 AM

2. Temperature and blower control
a.Blower profiles

◦On E60, E61 (5 Series), E63, 64 (6 Series), and E90, E91, E92, E93 (3 Series); the profiles "soft", "medium" and "high" can be accessed through the iDrive menu on vehicles equipped with CCC (Car Communication Computer), CHAMP (Central Head Unit and Multimedia Platform) and MASK (Multi Audio System Controller) to allow the blower settings to be individually programmed. These profiles are only effective in "AUTO" mode. Excessively soft or high blower intensity can be controlled here, allowing comfort to be individually adapted. The customer should definitely be made aware of this setting when the vehicle is sold. In the event of such a customer complaint, check whether the customer complaint can be rectified by resetting the profile or by adjusting the ventilation grille before performing a repair.

b.Temperature differences

◦Temperature differences from the center vents to outer air vents are to a certain degree normal even if all temperature settings are the same.

◦Temperature differences between the footwell vents and center vents depend on temperature setting in the center vents (stratification). The airflow to the footwell will in general be slightly warmer while airflow to the center vents will be generally slightly cooler.

◦Note: on E6x vehicles, stratification can only be programmed in the CID (Central Information Display). On all other vehicles it is programmed (if fitted) with a thumbwheel next to the center air vents. This setting can be freely selected (blue = cooler, white = neutral, red = warmer) and directly influences the heating/cooling output available in the interior.

3. Insufficient heating and cooling output
Note: Maximum heating and cooling output can only be achieved on vehicles with proper stratification (settings of center vents set properly. See note in section 2(b) of this service information or if "MAX" A/C is active for maximum cooling.
•To achieve maximum cooling from the air-conditioning system, it is not enough to simply set the temperature to minimum (60°F). In this case, stratification must also be set to "blue" (cold). Air recirculation can also be temporarily selected to intensify cooling. Alternatively, the "MAX" A/C button can be activated. Activating the "MAX" A/C function automatically sets the temperature to minimum, stratification to cold, blower speed to maximum and the air recirculation to active. The activation of the air recirculation can be heard.

•Depending on the outside temperature and the refrigerant pressure, the air-conditioning system will automatically shut down when the outside temperature drops below a certain level (approximately 32°F – 44°F). This is necessary to prevent the evaporator from icing up and resulting in reduced air output.

•If maximum heating is required, proceed accordingly. Set the temperature to maximum, stratification to "red" (warm) and, if necessary, air recirculation to active. Of course the vehicle can only be heated if the coolant temperature is sufficiently high.

06-02-2012, 10:23 AM	#6
josebmw Private 5 Rep 51 Posts Drives: 08 335i sedan Join Date: Apr 2012 Location: NC iTrader: (4)	a/c 2. Temperature and blower control a.Blower profiles ◦On E60, E61 (5 Series), E63, 64 (6 Series), and E90, E91, E92, E93 (3 Series); the profiles "soft", "medium" and "high" can be accessed through the iDrive menu on vehicles equipped with CCC (Car Communication Computer), CHAMP (Central Head Unit and Multimedia Platform) and MASK (Multi Audio System Controller) to allow the blower settings to be individually programmed. These profiles are only effective in "AUTO" mode. Excessively soft or high blower intensity can be controlled here, allowing comfort to be individually adapted. The customer should definitely be made aware of this setting when the vehicle is sold. In the event of such a customer complaint, check whether the customer complaint can be rectified by resetting the profile or by adjusting the ventilation grille before performing a repair. b.Temperature differences ◦Temperature differences from the center vents to outer air vents are to a certain degree normal even if all temperature settings are the same. ◦Temperature differences between the footwell vents and center vents depend on temperature setting in the center vents (stratification). The airflow to the footwell will in general be slightly warmer while airflow to the center vents will be generally slightly cooler. ◦Note: on E6x vehicles, stratification can only be programmed in the CID (Central Information Display). On all other vehicles it is programmed (if fitted) with a thumbwheel next to the center air vents. This setting can be freely selected (blue = cooler, white = neutral, red = warmer) and directly influences the heating/cooling output available in the interior. 3. Insufficient heating and cooling output Note: Maximum heating and cooling output can only be achieved on vehicles with proper stratification (settings of center vents set properly. See note in section 2(b) of this service information or if "MAX" A/C is active for maximum cooling. •To achieve maximum cooling from the air-conditioning system, it is not enough to simply set the temperature to minimum (60°F). In this case, stratification must also be set to "blue" (cold). Air recirculation can also be temporarily selected to intensify cooling. Alternatively, the "MAX" A/C button can be activated. Activating the "MAX" A/C function automatically sets the temperature to minimum, stratification to cold, blower speed to maximum and the air recirculation to active. The activation of the air recirculation can be heard. •Depending on the outside temperature and the refrigerant pressure, the air-conditioning system will automatically shut down when the outside temperature drops below a certain level (approximately 32°F – 44°F). This is necessary to prevent the evaporator from icing up and resulting in reduced air output. •If maximum heating is required, proceed accordingly. Set the temperature to maximum, stratification to "red" (warm) and, if necessary, air recirculation to active. Of course the vehicle can only be heated if the coolant temperature is sufficiently high.
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