General Repair Information

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No components of the heating and A/C system can be serviced. Replace faulty components using original parts.

-- On vehicles with high-voltage system, switch on the "parking air conditioner" function (deactivate). Refer to the Owner's Literature.

The refrigerant circuit for the A/C system may only be discharged and opened when

it is necessary due to safety precautions. Refer to SAFETY PRECAUTIONS WHEN HANDLING REFRIGERANT .
it is necessary to remove other components,
refrigerant circuit components for the A/C system must be removed or replaced.

When performing all other usual vehicle repair work, the refrigerant circuit of the A/C system remains closed.

If it is necessary to discharge and open the A/C system refrigerant circuit for certain repair work on the heating and A/C system, this is described in the respective work procedure. Certain tools are required to discharge the refrigerant circuit. These work procedures may also only be performed by trained personnel. Refer to Refrigerant Circuit , Working with A/C Service Station (1 of 2) and Working with A/C Service Station (2 of 2) .