If the S-class Mercedes (W221) will warm the windshield from the inside, do the following:
- In the Commands system, include the air-stripping function.
- Enable automatic AUTO climatic mode.
- If the sweating does not pass, including the function of thawing of the windscreen. To do this, press the MAX button. Immediately after stopping the warmup, the tasting function must be disabled.
Rear window warming is removed by pressing the REAR button. Because this button includes the heat of the rear glass, which is consuming a lot of power, it is necessary to turn it off as soon as the warm-up is terminated.
