| Important repair notes on air conditioning |
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| Air conditioning systems designed for refrigerant R12 must not be charged with refrigerant R134a until specific conversion measures have been performed → Chapter. |
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| The refrigerant oils specifically developed for R134a refrigerant circuits must never be mixed with the refrigerant oils specifically developed for R12 refrigerant circuits. |
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| A/C service stations that come into contact with refrigerants may be used only for the refrigerant for which they are intended. |
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| Components for R134a refrigerant circuits are identified with a legend or a green label, or are so designed (e.g. with different threads), that they cannot be confused with components for R12 refrigerant circuits. |
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| Within the engine compartment, on the bonnet catch striker plate or in the plenum chamber there is an information plate which states what refrigerant is used. |
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| Different refrigerants must never be mixed together. |
Note! | When working on the refrigerant circuit please refer to the information listed under “Safety precautions” → Chapter and “Basic procedures for working on refrigerant circuits” → Chapter. |
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