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%
Depending on the vehicle's equipment, the
®
cap of the AdBlue
tank can be locked for
security reasons.
Always top up with at least 10% of the AdBlue
tank capacity. Topping up with smaller amounts
could result in malfunctions.
Trailers/semitrailers
Notes about the trailer/fifth-wheel coupling
The trailer or fifth-wheel coupling is one of the
vehicle components with particular importance
for road safety. Please comply with every detail of
the manufacturer's operating, care and mainte‐
nance instructions.
If you fit a trailer coupling, observe the body/
equipment mounting directives.
If your semitrailer truck is equipped with a cou‐
pling ramp / coupling aid, the inclination gradient
specified in ISO 1726 cannot be guaranteed for
all distances between the rear axle and semi‐
trailer coupling point. Note that the clearance
between the semitrailer truck and the semitrailer
may be restricted, and you should adapt your
driving style accordingly. Always remove the mud‐
guard centre parts before coupling up.
* NOTE Observe the following safety notes
for driving with trailers/semitrailers:
Attach a trailer/semitrailer only at an
#
appropriate trailer/fifth wheel coupling.
Ensure there is adequate clearance
#
between the trailer/semitrailer and the
towing vehicle.
If the vehicle is being driven without a
#
load, only one trailer without a load may
be coupled up.
Do not exceed the permissible axle
#
loads.
Comply with a minimum front axle load.
#
This will ensure adequate steerability for
the towing vehicle. Minimum front axle
load – towing vehicle: 25% = 3-axle vehi‐
cles 30% = 2-axle vehicles (trailer lighter
than or as heavy as the towing vehicle)
35% = 2-axle vehicles (trailer heavier
than the towing vehicle)
If you drive with more than two trailers/semitrail‐
ers, you must deactivate Stability Control Assist.
Otherwise, malfunctions or faults can occur as a
result.
Activating/deactivating Stability Control Assist
(
page 229).
/
®
Driving mode 285
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