Mercedes-Benz MCS Operator's Manual page 133

Navigation*
Route guidance
Use the joystick to select Avoid
Road and press .
The Avoid Road menu appears.
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3 
Use the joystick to select the streets
you want to avoid and press
After you select all the streets you want
to avoid, use the joystick to select OK
to proceed and press .
The MCS returns to the Route Select
menu and recalculates the route.
i
When you are traveling on an express-
way or a freeway, the system calculates
a new route avoiding the current road
for a distance of five miles. On county
and local roads, the system calculates a
new route avoiding the current road for
a distance of one mile.
.