A/C - CCM Software Update For Rear Defroster Function

Retailer Technical Journal 18229
CCM, Auto rear defroster program setting
may not hold programmed value.

Date 02-16-2009

Note!
If using a printed copy of this Retailer Technical Journal, first check for the latest online version.

This document supersedes the previous document dated 2/13/2009. Changes are:
Added text to identify ICM abbreviation.





AFFECTED VEHICLES:

DESCRIPTION:
The auto rear defroster program setting in the ICM (Infotainment Control Module) menu may not hold programmed value after the car has gone into sleep mode The root cause is a bug in the CCM (Climate Control Module) software that was introduced during 2007W46 (apx. November 6, 2007)

SERVICE:
Download CCM upgrade





NOTE:
After the CCM Software download, the default value for Auto defrost in the ICM menu is as follows:
S80 - ON
V70, XC70 - OFF

If "Auto rear defroster" is selected, the rear window electrical defroster will automatically turn on if the ambient temperature is below 48 degrees F when the engine is started.





WARRANTY CLAIM INFORMATION