Keep the activation times of the electronic sys‐
tems/power consumers short when towing a
camper to save the vehicle battery power.
Trailer tail lights
▷ Turn signals/brake lights: 54 watts per side.
▷ Rear lights: 100 watts in total.
▷ Backup light: 54 watts in total.
Towing a trailer
When driving with a trailer or load carrier and the
trailer socket not occupied, some driver assis‐
tance systems may have functional limitations or
To prevent malfunctions, activate trailer towing,
refer to page 273.
When the trailer socket is occupied or trailer tow‐
ing is activated, some driver assistance systems
are unavailable, or available to a limited extent. A
Check Control message is displayed where ap‐
Depending on the design and loading of trail‐
ers, they may begin swinging at speeds ex‐
ceeding approx. 50 mph/80 km/h. There may
be a risk of accident or risk of damage to prop‐
Adapt your speed when driving with a trailer.
Immediately brake in the case of swinging. Ap‐
ply necessary steering corrections as carefully
The tire inflation pressure must be adjusted to
the increased axle load in trailer towing. Driving
with too low tire inflation pressure can damage
the tires. There may be a risk of accident or risk
of damage to property. Do not exceed a speed
of 60 mph / 100 km/h. Increase the tire inflation
pressure of the towing vehicle by 0.2 bar. Note
the maximum possible tire inflation pressure in‐
dicated on the tire.
In the interest of safety and to avoid hindering
the smooth flow of traffic, the towing of trailers is
permissible on uphill grades up to 12 %.
If higher trailer loads are approved at a later point
in time, the gradient limit is 8 %.
Starting on uphill grades
The parking brake is automatically released
when the accelerator pedal is activated.
In order to prevent rolling back during starting,
use the parking brake.
1. Pull and release switch before starting
The parking brake is set.
2. Accelerated enough to start off.
A vehicle-trailer combination has the tendency to
swing more readily on hills.
Manually shift down to the next-lowest gear be‐
fore driving on a hill and drive downhill slowly.
Online Edition for Part no. 01405A10E93 - VI/20