This is the electronic control unit for the BMW Climate Control system.

1 137 328 033  BOSCH 1 391 779 9 BMW

Easy to install and instructions are available for the do-it-yourselfer.

Typical symptoms include: A/C - Heater blower will only run in the "MAX" position or continues to run even in the "OFF" position. It can also result in the loss of one or more fan speeds, or an nonoperational climate control unit, or a cent control selector that won't work.

 I only sell the OEM units, never aftermarket so they are the same quality as your original. Thanks for looking!