LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2018 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 763 (Functional Descriptions - F25 - Charging System, Anti-Theft, Body Electrical Systems) >> Body Electrical System - Functional Description >> Rain-light-solar-condensation sensor >> System functions >> Detection of condensation

Detection of condensation

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

The condensation sensor detects the relative humidity in the area of the windscreen by means of wet measuring cells. Apart from this, the condensation sensor measures the air humidity on the inside of the windscreen.

The signals are evaluated in the condensation sensor's evaluation electronics. The data is transmitted across an internal data bus to the data interface (local interconnect network bus) to be transferred to the IHKA control unit.

If, for example, more than 65 % air humidity is measured on the windscreen, the IHKA control unit starts a program for avoiding condensation.