High loads and high outside
temperature
NOTE
On long journeys with high trailer loads, a high
outside temperature and a low fuel tank con‐
tent, the fuel system can overheat leading to
reduced engine power. There is a risk of mate‐
rial damage. Refuel in good time. Make sure
that on long journeys with high trailer loads and
a high outside temperature, the fuel tank is
more than 1/4 full.
Trailer Stability Control
Principle
The system helps you to neutralise a trailer's
tendency to swing from side to side.
Trailer Stability Control detects snaking move‐
ments and promptly brakes the vehicle so that
road speed falls to below the critical range and
the car/trailer combination is stabilised.
General
If the power socket for the trailer is in use but no
trailer is attached, for example when using a bicy‐
cle carrier with lighting, the system may become
active in extreme driving situations.
Operating requirements
The system is operational from a speed of ap‐
proximately 65 km/h, 40 mph, when towing a
trailer and with the trailer socket in use.
System limits
The system is unable to intervene or intervenes
too late, in the following situations for example:
▷ If a trailer folds instantly, for example on slip‐
pery or loose road surfaces.
▷ If a trailer with a high centre of gravity tips
over before snaking is detected.
▷ If Dynamic Stability Control DSC is deactiva‐
ted or has malfunctioned.
▷ If the power consumption of a trailer is too
low to be detected by the system, for exam‐
ple due to LED rear lights.
Activating towing a trailer
mode
Principle
When driving with a trailer or load carrier and the
trailer socket occupied, some Driver Assistance
Systems may have functional limitations or may
malfunction. In order to avoid malfunctions, acti‐
vate towing a trailer mode.
Activating
Via iDrive:
1.
"CAR"
2. "Settings"
3. "General settings"
4. "Trailer mode"
5. Activate towing a trailer mode.
Trailer tow hitch with
electrically swivellable
trailer hitch
General
The swivel-mounted ball linkage for the trailer
tow hitch is located on the underside of the vehi‐
cle.
Seite 322
DRIVING HINTS
Towing a trailer
322
Online Edition for Part no. xxx - VI/19
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