This document provides instructions to access a hidden service test menu on the Connect Nav+ unit. It describes pressing specific buttons in a particular order - "Setup", then "Connect" 4 times quickly, then "Enter" - which will cause a "Service" button to appear. Selecting this allows testing and ensuring various modules, speakers, antennas, and GPS/GSM systems are functioning properly. The second part of the document provides meanings for channel options in the service test menu, including checking system errors, interior and exterior temperature sensors, air vents, display, temperature flap settings, and potentiometer values.

1. Hidden Service Test Menu
There is an inbuilt menu in the Connect Nav+ unit that allows the user to ensure
various modules are working, and that the speakers, antennas and GPS/GSM
systems are functioning normally. To access this menu, do the following continuously
and quickly:
Press Setup.
Press Connect 4 times (i.e. push either button 10, 11 or 12 of the 12 buttons
along the bottom of the screen).
Press Enter.
Scroll down to the newly appeared button Service, and press Enter.
ENG: Meaning of the Channel's:
1. System error
2. Actual value feeler virtually
3. Actual value interior feeler console
4. Actual value outside temperature - feeler wasserkasten
5. Actual value outside temperature - feeler bumper
6. Actual value blowing out feeler floor space
7. Actual value blowing out feeler man Anstroemer
8. Display check
9. Actual digital value acknowledging potentiometer temperature flap
10. Target digital value temperature flap
11. Actual