Safety notes
WARNING
Speeds in excess of approximately 80 km/h,
50 mph, can be enough to produce snaking
motion, depending on the design of trailers and
the loads they are carrying. There is a risk of
accident or material damage.
Keep to an appropriate speed when towing a
trailer. If the trailer starts to snake, brake imme‐
diately and make the necessary steering cor‐
rections as carefully as possible.
WARNING
The tyre inflation pressure must be adapted
because of the increased axle load when tow‐
ing a trailer. Driving with inadequate tyre infla‐
tion pressure can damage the tyres. There is a
risk of accident or material damage. Do not ex‐
ceed a speed of 100 km/h / 60 mph. Increase
the tyre inflation pressure of the towing vehicle
by 0.2 bar. Note the maximum possible tyre in‐
flation pressure stated on the tyre.
Upward gradients
General
In the interest of safety and to avoid holding up
other traffic, do not attempt to climb upward gra‐
dients steeper than 12 % when towing a trailer.
If higher trailer loads have been retrospectively
approved, the limit is 8%.
Driving off on upward gradients
The parking brake is automatically released
when the accelerator pedal is operated.
To prevent the vehicle from rolling back when
driving off, use the parking brake.
1. Shortly before driving off, pull and re‐
lease the switch.
The parking brake is engaged.
2. To drive off, press the accelerator pedal with
sufficient force.
Downhill gradients
On downward gradients, a car/trailer combination
tends to start snaking earlier.
Before the downward gradient, shift down man‐
ually to the next-lowest gear and drive down‐
wards slowly.
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.
Seite 344
DRIVING HINTS
Towing a trailer
344
Online Edition for Part no. 01405A1EA53 - X/20
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