Refrigerant Circuit
Important Information when Working with the A/C Service StationContacts in Contact Housing, Repairing
First, open or release if necessary the secondary lock of
the contact housing. Refer to
→ Chapter „Contact Housings, Releasing and Disassembling“.
–
Release contact (primary ...
Indicator lamps and fuel gauge
Fig. 129 In the instrument cluster: Variants
A and B: fuel gauges for petrol and diesel. Variant C: fuel gauge for autogas
First read and observe the introductory information
and safety warnings 
Lit up
Needle position 
Possible cause †...
Trailer Socket
Connect the trailer socket to the vehicle electrical system
of the vehicle pulling the trailer according to the manufacturer
instructions.
Refer to the applicable wiring diagrams or manufacturer
installation instructions when installing ...