When the outside temperature is low, the display in the instrument cluster may take slightly longer to appear than it does when the outside temperatures is higher.
Additional information and warnings:

WARNING
Instruments
Instrument overviewControls for the air conditioning system
Fig. 125 In the centre console: air conditioning
controls (manual)
Fig. 126 In the centre console: Climatronic
controls
First read and observe the introductory information
and safety warnings Press the corresponding button to switch
a function on or off. When a function is switched on, ...
Battery, Testing using Midtronics Battery Tester -MCR340VKT
Requirements
WARNING
Read and follow the Safety Precautions when working
with batteries. Refer to
→ Chapter „Warnings and Safety Precautions“.
...
Replacing Reservoir, No Contaminants, No Loss of Refrigerant
Discharge the refrigerant circuit.
–
Replace the restrictor depending on the vehicle.
–
Remove receiver or accumulator.
–
Remove dirt from receiver or res ...