Defroster button, location / task / function - GF83.40-P-2139GI

MODEL 163 as of 01.09.01 with CODE (580a) Automatic air conditioning 

Fig 1: Identifying Blower Switch And Defroster Button

Courtesy of MERCEDES-BENZ USA

	Defroster button, location	The defroster button ( ) is located in the center in the upper half of the blower switch (1) on the AAC push-button control module (N22).
	Defroster button, purpose	The defroster button ( ) starts the defroster function.
	Defroster button, function		GF83.40-P-2139-02GI