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 overviewRefrigerant Circuit, Tracing Leaks, with Electronic Leak Detector -VAG1796
Note
This repair manual describes different methods for detecting
leaks in the refrigerant circuit. These methods have been tested
and result in success when used correctly.
If when searching for compressed air / Nit ...
Electrically-Driven A/C Compressor for High Voltage System
Caution
Non-approved tools or materials such as leak sealing
additives can cause damage or malfunctions in the
system.
Only use tools and materials approved by the
manufactu ...
Primary Lock
The primary lock is the locking mechanism of an individual
crimp contact in the contact housing.
If necessary, housing securing mechanisms (secondary locks)
must be released or removed using specified tool before
releasing the contacts. ...