Mercedes-Benz C-Class Convertible 2021 Operator's Manual page 397

* NOTE Damage due to incorrect refriger‐
ant
If a non-approved refrigerant is used, the cli‐
mate control system may be damaged.
USA: use only R‑134a refrigerant.
#
Canada: use only R‑1234yf refrigerant.
#
* NOTE Damage to the climate control
system due to incorrect refrigerant com‐
pressor oil
Only use refrigerant compressor oil that
#
has been approved by Mercedes-Benz.
Do not mix the approved refrigerant
#
compressor oil with a different refriger‐
ant compressor oil.
Work on the climate control system may be car‐
ried out only by a qualified specialist workshop.
All applicable regulations, as well as SAE stand‐
ard J639, must be adhered to.
The information label for the climate control sys‐
tem regarding the refrigerant type and the refrig‐
erant compressor oil (PAG oil) is located on the
inside of the hood.
Information label (example – USA/China)
1 Hazard and service warning symbols
2 Refrigerant filling capacity
3 Applicable standards
4 PAG oil part number
5
GWP (global warming potential) of the refrig‐
erant used
6 Refrigerant type
Technical data 395
Information label (example – Canada)
1 Hazard and service warning symbols
2 Refrigerant filling capacity
3 Applicable standards
4 PAG oil part number
5
GWP (global warming potential) of the refrig‐
erant used
6 Refrigerant type
Symbols 1 indicate the following:
Possible dangers
R
The need to have service work carried out at
R
a qualified specialist workshop only