Mercedes-Benz CLS Operator's Manual page 258

What to do if ...
256
Driving systems
Problem
· The red distance
warning lamp
comes on while
driving and an
acoustic
warning sounds.
Vehicle
Problem
6 The yellow fuel
tank reserve
warning lamp
comes on when
the engine is
running.
Possible causes/consequences and X Solutions
You are gaining too rapidly on the vehicle ahead of you or the
distance warning system has recognized a stationary obstacle on
your probable line of travel.
X
Apply the brakes immediately.
X
Carefully observe the traffic situation. You may need to brake
or maneuver to avoid hitting an obstacle.
Possible causes/consequences and X Solutions
The fuel level has gone below the reserve mark.
X
Refuel at the next gas station.