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| If the control unit in dash panel insert -J285- transmits the code (adaption) “Vehicle with auxiliary heater”, the operating and display unit, Climatronic control unit -J255- expects information from the auxiliary heater control unit -J364-. If this is not received, a fault is stored in the operating and display unit, Climatronic control unit -J255-. |
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| The heating of the coolant after a cold start calculated by the operating and display unit, Climatronic control unit -J255- differs depending on engine version. |
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