Mercedes-Benz SLR McLaren. Operator's Manual.

Symbol messages
Left display Right display Possible cause/
consequence
< Airbrake malfunc The Airbrake locking mechanism
is malfunctioning.
# Battery/
Alternator
Stop vehicle
Convenience functions
Temporarily
Unavailable
The battery or the alternator is
malfunctioning.
The electrohydraulic brake system
requires electrical energy
and therefore has only limited
operation. Considerably greater
brake pedal force is required
and the pedal travel is longer.
The stopping distance is increased.
The consumer battery has insufficient
voltage and can no
longer supply the convenience
functions such as power windows.
Possible solution
Practical hints
What to do if ...
Notify an authorized Mercedes-Benz Center
immediately.
Stop the vehicle as soon as it is safe to do so. Adjust driving
to be consistent with reduced braking responsiveness.
Notify an authorized Mercedes-Benz Center immediately.
Read and observe messages in the multifunction display.
Failure to follow these instructions increases the risk of an
accident.
The electrical consumers will come back online as soon as
on-board voltage is sufficient.
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