June 1, 2017 Service bulletin

A/C Cooling: Intermittent Reduction of Air Flow What is new The date in repair procedure and warranty...

BMW technical service bulletin B640613 for 2012-2016 BMW 328I, 2017 BMW 330I and 2012-2016 BMW 335I and others.

Bulletin number: B640613
Component: Equipment: appliance: air conditioner
Summary: A/C Cooling: Intermittent Reduction of Air Flow What is new The date in repair procedure and warranty section has been changed for vehicles produced to September 30, 2013 and from October 1, 2013.. Customer may complain of reduced air flow when the air conditioning system is operated for an extended time, usually longer than 30 minutes. INFORMATION Possibility of reproducing this situation is improved by the following conditions: High outside ambient temperature High humidity Note: It is very difficult to duplicate this issue. The fault may be reproduced under the following conditions: Air-conditioning system switched on Driving Experience switch NOT set to Eco Pro Slower fan speeds Temperature setting below 68F (20C) Trip duration at least 30 minutes Outside temperature above 68F (20C) NOTE: After parking the vehicle or switching off the air-conditioning system for at least 20 minutes, the symptom disappears (ice melts off evaporator and puddles under the car from the A/C drains). Evaporator starts to freeze up due to the position of the evaporator temperature sensor.

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