Mercedes-Benz CLS Owner's Manual page 158

Therefore, observe the following notes:
due to salt build-up on the brake disks and
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brakepads, the braking distance can increase
considerably or result in braking only on one
side
maintain a much greater safe distance to the
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vehicle in front
To remove salt build-up:
brake occasionally while paying attention to
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the traffic conditions
carefully depress the brake pedal at the end
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of the journey and when starting the next
journey
Notes on aquaplaning
Aquaplaning can take place once a certain
amount of water has accumulated on the road
surface.
Observe the following notes during heavy precip‐
itation or in conditions in which aquaplaning may
occur:
reduce speed
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avoid tyre ruts
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avoid sudden steering movements
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brake carefully
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% Also observe the notes on regularly checking
wheels and tyres ( page 327).
/
Notes on driving through water on the road
surface
Water which has entered into the vehicle can
damage the engine, electrics and transmission.
Water can also enter the air intake of the engine
and cause engine damage.
Observe the following if you must drive through
water:
The water, when calm, may only reach the
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lower edge of the vehicle body.
Drive at a maximum speed of 10 km/h;
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water can otherwise enter the vehicle interior
or engine compartment.
Vehicles travelling in front, or oncoming vehi‐
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cles, can create waves which may exceed the
maximum permissible depth of the water.
The braking effect of the brakes is reduced after
fording. Brake carefully while paying attention to
Driving and parking 155
the traffic conditions until braking power has
been fully restored.
ECO start/stop function
Operation of the ECO start/stop function
% The ECO start/stop function is not available
in all drive programs, depending on the
engine. Observe the status display in the
multifunction display for this.
The engine is switched off automatically in the
following situations if all vehicle conditions for
an automatic engine stop are met:
you brake the vehicle to a standstill in trans‐
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mission position h or i.
vehicles with a 48 V on-board electrical
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system: you depress the brake pedal when
travelling at a low speed.
If the system has detected one of the following
situations, the engine will not stop:
you stop at a stop sign and there is no vehi‐
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cle in front of you.