Checking with Expansion Valve, Receiver/Dryer and A/C Compressor Regulator
Valve -N280-, Externally Regulated A/C Compressor
General InformationFrequently asked questions
If you suspect that there is a fault in the vehicle or if your vehicle has
been damaged, read and observe the following information before
contacting a Volkswagen dealership or qualified workshop. You may also find
useful information in the index under the headings Things to note or Checklist. ...
Service Test, Performing
Note
The printed test results can differ depending on the
software version.
Read the Battery Tester -VAS6161- Operating Instructions.
WARNING
Do not ch ...
Indicator lamp for the tyre monitoring system
First read and observe the introductory information
and safety warnings 
Lit up
Possible cause  
Solution
The
tyre pressure of one tyre or several tyres has decreased considerably in
comparison to the tyre pressure set by ...