View source for Audi A5 (8T) Heating/Air Conditioning KLIMA 3 ZONEN

__FORCETOC__

This page applies to Address '''Auto HVAC (J255)''' models using '''KLIMA 3 ZONEN''' in the Component field:

 Address 08: Auto HVAC (J255)       Labels:. 8Tx-820-043-3Z.clb
   Part No SW: 8T2 820 043 T    HW: 8T2 820 043 T
   Component: KLIMA 3 ZONEN H06 0140

== Coding ==
* This module supports Long Coding.
* Coding information should be found using the  '''[http://www.ross-tech.com/vcds/tour/recode_screen.php Long Coding Helper]''' while connected to the vehicle with VCDS.


== Basic Settings ==

'''''Note:''' Basic setting needs to be performed after HVAC motors or the AC compressor have been replaced.<br><br>
=== Potentiometer & Flap Alignment ===
''Necessary when flap motors are replaced -or- when a self check needs to be performed for self diagnosis of faulty motors.''<br>
'''[Select]'''<br>
'''[08 - Heating/Air Conditioning]'''<br>
'''[Basic Settings - 04]'''<br>
Group 001<br>
'''[Go!]'''<br>
Activate the Basic Setting.<br>
'''[ON/OFF/Next]'''<br>
The basic setting takes approximately 40 seconds.<br>
The module should show Performed when finished<br>
'''[ON/OFF/Next]'''<br>
'''[Done, Go Back]'''<br>

=== Compressor Run-In ===
''Necessary when the compressor is replaced and DTC  [[03023]] is stored -or- when the J255 Heating/Air Conditioning control module is replaced.''<br>

The Potentiometer & Flap Alignment needs to be completed immediately before the Compressor Run-In with the engine at idle.

'''Prerequisites''' to start the basic setting A/C compressor first run:<br>
* Engine at idle<br>
* Transmission in Park or Neutral<br>
* Do not cycle the ignition<br>
* Basic setting was performed for the Potentiometer & Flap Alignment <br>
* Inside blower motor is switched on<br>
* Air vents fully open<br>
* Load management not active<br>
<br>
'''Compressor Run-In Steps''':<br>
Start engine and allow it to Idle.<br>
Adapt flap end stops using the Potentiometer & Flap Alignment steps above.<br>
'''[Basic Settings - 04]'''<br>
Group 003<br>
'''[Go!]'''<br>
Activate the Basic Setting.<br>
'''[ON/OFF/Next]'''<br>
The basic setting takes approximately 120 seconds.<br>
The module should show Performed when finished<br>
* It will show completed, but wait 120 sec (2 Min) and observe the flashing A/C button light on the HVAC panel.
* After the Basic Settings has completed, the A/C light will quit flashing and the fault code will clear.<br>
'''[ON/OFF/Next]'''<br>
'''[Done, Go Back]'''<br>
<br>

== Replacement ==
Replacement of this control module may result in Component Protection DTCs such as [[U1101]] and [[U1100]]. Component Protection can only be learned/disabled using the Factory Tool in Combination with an online Connection.