Mercedes-Benz C-Class Coupe 2019 Operator's Manual page 351

Cleaning and care
Matte finish Only use care products approved for Mercedes-Benz.
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Notes on cleaning decorative foils
Observe the notes on matte finish care in the
chapter "Notes on paintwork/matte finish paint‐
work care" ( page 348). They also apply to
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matte decorative foils.
Avoiding paintwork damage
Do not polish the vehicle and alloy wheels.
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Only use car washes that correspond to the latest engi‐
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neering standards.
Do not use car wash programs with a final hot wax treat‐
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ment.
Do not use paint cleaners, buffing or polishing products,
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gloss preservers, e.g. wax.
Always have paintwork repairs carried out at a qualified
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specialist workshop.
Maintenance and care 349