Adaptation of Fresh Air Blower RPM Decrease, Performing (Adaptation Channel 08)
Adaptation Of Fresh Air Blower RPM Decrease, Performing (adaptation Channel 08)
NOTE:
- To improve voice recognition and the clarity of telephone voice input, the Fresh Air Blower speed is reduced on vehicles as of Model Year 2002 (with operating and display module, Climatronic Control Module J255 as of hardware/software version "0711").
- The reduction takes effect as soon as the message "Telephone voice input" is transmitted via the CAN-Bus comfort system.
- The reduction time is limited to max. 2 minutes.
- The amount by which the Fresh Air Blower speed is reduced depends on the air outflow direction and the Fresh Air Blower speed when the "Telephone voice input" signal is received. The greater the proportion of air routed to the instrument panel vents, the more the speed is reduced.
- Reduction of the Fresh Air Blower speed takes effect as of approx. 40% air distribution to the instrument panel vents. The maximum reduction takes place with 100% air to the instrument panel vents.
- In the basic setting, the Fresh Air Blower speed with 100% air to the instrument panel vents is limited to 15 % (or 25 %) of the maximum Fresh Air Blower speed depending on the version of the operating and display module, Climatronic Control Module J255. This restriction can be reduced or cancelled via the "Adaptation" function in adaptation channel "8".
- To obviate the need for several workshop visits, it is appropriate after changing the adaptation to discuss the "Voice input" function with customers on vehicle hand over with regard to the desired reduction of the Fresh Air Blower speed with 100% air from the instrument panel vents and to try this out if applicable.
Adaptation procedure
- Check DTC memory of operating and display module, Climatronic Control Module J255 and eliminate any other malfunctions displayed. Displaying & Reading Trouble Codes
- Check coding of operating and display module, Climatronic Control Module J255 for vehicle-specific optional extras and correct if necessary.
Indicated on display of Diagnostic Operation System VAS 5051A
- Select function "10 - Adaptation".
Indicated on display of Diagnostic Operation System VAS 5051A
- Prompt for entering channel number appears in display zone -1 -.
- Input keypad appears in display zone - 2 -.
- Use input keypad in display zone - 2 - to enter "8" for channel "08" and confirm by touching Q key.
NOTE:
- Possible causes if display zone -1 - indicates "Function unknown or cannot be implemented at present":
- - Control unit adaptation not performed as specified and in full
- Malfunction on CAN-Bus comfort system
Indicated on display of Diagnostic Operation System VAS 5051A :
- Display field -1 - indicates "Channel 8 reading and testing".
- Display in area - 2 - is e.g. "25%".
- A bar appears in area - 3 - with a code number for the currently valid maximum Fresh Air Blower speed (e.g. "6800" for 25%).
- The bar can be used to alter the Fresh Air Blower speed with telephone operation in the range between 15% to 88%.
NOTE:
- If the bar is used to enter a code number corresponding to a maximum Fresh Air Blower speed of less than 15% or greater than 88%, the code number is displayed but not implemented.
- If the keypad is used to enter a code number greater than approx. "32600", the display is automatically reset to 15% or 25 %.
- New value set for maximum Fresh Air Blower speed with telephone operation appears in area - 2 -.
Basic factory setting: 15% or 25 % (code number currently "6800" for 25%)
Maximum Fresh Air Blower speed setting with voice recognition: 15% to 88% (code number currently "3840" to "22528")
Entry can also be made by way of keypad.
- Touch key - 4 - (for entry via keypad).
Indicated on display of Diagnostic Operation System VAS 5051A :
- Display field -1 - indicates "Enter adaptation value: 0 to XXXXX".
- Input keypad appears in display zone - 2 -.
- Use input keypad to enter the desired value in the display zone for the maximum Fresh Air Blower speed with "Telephone voice input" function for re-adaptation of the operating and display module, Climatronic Control Module J255.
Basic factory setting: 15% or 25 % (code number currently "6800" for 25 %)
Maximum Fresh Air Blower speed setting with telephone operation: 15% to 88 % (code number currently "3840" to "22528")
NOTE:
- There is no further reduction of the Fresh Air Blower speed in the 88% setting. In this setting, problems may be encountered with voice recognition and clarity of telephone voice input at maximum Fresh Air Blower speed with air routing to the instrument panel vents.
- If the keypad is used to enter a code number corresponding to a maximum Fresh Air Blower speed of less than 15% or greater than 88%, the code number is displayed but not implemented.
- If the keypad is used to enter a code number greater than approx. "32600", the display is automatically reset to 15% or 25 %.
- Reduction of the Fresh Air Blower speed takes effect as of approx. 40% air distribution to the instrument panel vents. The maximum reduction takes place with 100% air to the instrument panel vents.
- Code number entered appears in area - 2 -.
- Confirm entry by touching Q key.
Indicated on display of Diagnostic Operation System VAS 5051A :
- New value for Fresh Air Blower speed with telephone operation appears in area - 2 -.
- Code number entered appears above bar in area - 3 -.
- Store entry by touching key - 5 -.
Indicated on display of Diagnostic Operation System VAS 5051A :
- Display field -1 - indicates "Store channel 8".
- New value for Fresh Air Blower speed with telephone operation appears in area - 2 -
- Original and new code number for maximum Fresh Air Blower speed with telephone operation appear in area - 3 -.
- Adopt and store entry by touching key - 4 -.
- Display field -1 - indicates "Store channel 8, value 0 to XXXX stored".
NOTE:
- If a code number corresponding to a maximum Fresh Air Blower speed of less than 15% or greater than 88% is entered, the code number is displayed but not implemented.
- If a code number higher than approx. "32600" is entered, it is ignored by the operating and display module, Climatronic Control Module J255 and 15% or 25 % is stored.
- Touch <- key to return to selection program.
- Check voice recognition with newly entered Fresh Air Blower speed reduction.
- Terminate On Board Diagnostic (OBD) and switch off ignition End Output (Function 06)
Check voice input and telephone voice recognition as follows:
- Start engine.
- On operating and display module, Climatronic Control Module J255, select "Maximum Fresh Air Blower speed" and "air distribution to instrument panel vents" functions or "Defrost" function.
- Open all instrument panel vents.
- Check function of voice input and telephone voice recognition in this setting.