Mercedes Benz

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) Technical Service Bulletin # 640710 Date: 100701 A/C - Air Flow Too Strong/Weak in 'Auto' Mode SI B 64 07 10 Heating and Air Conditioning July 2010 Technical Service SUBJECT Intensity of the IHKA Auto Mode Program MODEL E82, E88 (1 Series) E9x (3 Series) Vehicles produced from 8/10/09 SITUATION The intensity of the air flow from the integrated automatic heating and air conditioning control panel (IHKA) is too strong or too weak in "Auto" mode. CAUSE The customer is not familiar with the new IHKA control panel. There is no fault with the IHKA system. A new IHKA control panel was introduced on vehicles from the 2010 model year that included a new setting; this gives control over the air intensity in "Auto" mode. At the same time, the display operation was changed to display either "fan speed" in "Manual" mode, or "intensity" in "Auto" mode. Customers are not aware th...