This chapter contains information on the following subjects:
→ Function and operation by the user
The Driver Alert System informs the driver if his or her driving shows signs of tiredness.
Additional information and warnings:

WARNING
The Driver Alert System has been developed for use only while driving on highways and good roads.
If there is a system fault, proceed to a qualified workshop immediately to have the system checked.
Function and operation by the userEffects on metal
In its pure state, refrigerant R134a is chemically stable
and does not attack iron or aluminium.
However, impurities such as chlorine compounds in the
refrigerant do attack certain metals and plastics. This can lead
to blockages, leaks a ...
Detecting leaks in refrigerant circuit
Note
Different processes are described in this workshop manual
for leak detection in the refrigerant circuit. These processes
have been tested and lead to a positive result under the
different conditions of use if the application is carrie ...
Radar sensor
Fig. 168 In the front bumper: radar sensor
First read and observe the introductory information
and safety warnings A radar sensor is fitted to the front bumper to monitor
the traffic situation . Vehicles travelling ahead can thus be detected up to a
distance of approximately 120 m.
T ...