| Requirements for sequence described on the following pages (on activation of auxiliary heater) |
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| Coolant circuit bled and coolant temperature less than 20 °C |
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| Battery -A- adequately charged |
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| Sufficient fuel in tank |
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| No faults stored in fault memory of auxiliary heater control unit -J364- |
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| Only the main features of the operating sequence are outlined on the following pages. |
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| The auxiliary heater operating sequence can be monitored by way of the vehicle diagnostic, testing and information system -VAS 5051A- (“Reading measured value block” function). There may however be slight differences between the values given in the illustrations and the actual switching points. |
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