A/C Cooling: Intermittent Reduction of Air Flow
BMW technical service bulletin B640613 for 2012-2016 BMW 328I, 2012-2016 BMW 335I and 2015-2016 BMW M3 and others.
- Bulletin number
- B640613
- Component
- Equipment: appliance: air conditioner
- Summary
- A/C Cooling: Intermittent Reduction of Air Flow. 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 68°F (20°C) ? Trip duration at least 30 minutes ? Outside temperature above 68°F (20°C) 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.
Vehicles covered
- BMW 328I 2012-2016 20122013201420152016
- BMW 335I 2012-2016 20122013201420152016
- BMW M3 2015-2016 20152016
- BMW 328D 2014-2016 201420152016
- BMW 428I 2014-2016 201420152016
- BMW 320I 2013-2016 2013201420152016
- BMW 435I 2014-2016 201420152016
- BMW M4 2015-2016 20152016
- BMW 330E 2016 2016
- BMW 340I 2016 2016
- BMW Active Hybrid 3 2013-2015 201320142015
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