| Notes on auxiliary heater |
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| There are different versions of the auxiliary heater, the Audi Q5 is not to be fitted with auxiliary heaters with part number 8K0.xxx.xxx. Pay attention to the exact assignment when replacing an auxiliary heater → Electronic parts catalogue. |
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| The holders for the auxiliary heater were gradually modified on the Audi Q5 in Model Year 2009. Pay attention to the correct assignment when replacing the auxiliary heater and holders → Electronic parts catalogue and → Anchor. |
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| Vehicles with a diesel engine and “auxiliary heater” optional extra are currently also fitted with an electric supplementary air heater → Audi Sales Range. On vehicles with a supplementary air heater, the auxiliary heater is not actuated as a “supplementary heater”. Depending on vehicle equipment and production period, the supplementary air heater may be discontinued at a later date (not yet finalised). |
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| Vehicles with a diesel engine but no auxiliary heater are always fitted with an electric supplementary heater. Heat energy is supplied to the air immediately after it emerges from the air conditioner unit heat exchanger → Audi Sales Range and → Air conditioning; Rep. Gr.87. |
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| This auxiliary heater is installed in various vehicle models. The part number changes each time this auxiliary heater is fitted in a new vehicle model (e.g. from 8K0 xxx xxx to 8R0 xxx xxx on introduction of the Audi Q5). Attention must therefore be paid to correct assignment. Care must however also be taken to ensure that an old auxiliary heater version is never installed in a vehicle previously fitted with a newer version. For example, an Audi A4 provided at the factory with an auxiliary heater with part number 8R0 xxx xxx is not to be fitted with an auxiliary heater with part number 8K0 xxx xxx → Electronic parts catalogue. |
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| As of 10.2010 auxiliary heaters with part number 4xx xxx xxx are gradually to be introduced. Service installation of this version of the auxiliary heater is also possible in vehicles originally fitted with an auxiliary heater with part number 8R0 xxx xxx or 8K0 xxx xxx. As however there are differences between certain components of the various auxiliary heater versions (e.g. the 2-pin connector for the power supply to the auxiliary heater control unit -J364-), attention must be paid to correct assignment when replacing individual components of the auxiliary heater → Electronic parts catalogue. |
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| Depending on the mode of operation set (“Auxiliary heating” or “Auxiliary ventilation”), certain faults which impair the auxiliary heating / auxiliary ventilation function are not stored in the event recorder of the auxiliary heater control unit -J364-. In the event of problems with the auxiliary heater, the event recorder of the operating and display unit, Climatronic control unit -J255- should therefore also be read out → Vehicle diagnostic, testing and information systemVAS 5051/, “Guided fault-finding function”. |
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