First read and observe the introductory information
and safety warnings

WARNING
Fitting the removable ball coupling
Hitching and connecting the trailerA/C Compressor Regulator Valve -N280
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
Refer to
→ Rep. Gr.87.
...
Commercially Available Tools and Materials
Note
This list outlines the testers, tools and materials required
for expert refrigerant circuit repair work.
Caution
Non-approved tools or materials such as leak sealing
additiv ...
Beru Wheel Electronics Tire Pressure Monitoring Sensor, Removing and
Installing
Overview, Beru System
WARNING
If tire sealant was used, then the wheel electronics
on that particular wheel must be replaced.
WA ...