User Manual - Page 248

For 2018 BMW X3.

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Backup light: 54 watts in total.
Keep the activation times of the electronic sys‐
tems/power consumers short when towing a
camper to save the vehicle battery power.
Towing a trailer
General information
If the trailer socket is in use, some driver assis‐
tance systems are unavailable, or available to a
limited extent. A Check Control message is
displayed where applicable.
When driving with a trailer or load carrier and
the trailer socket not in use, some driver assis‐
tance systems may have functional limitations
or may malfunction.
To prevent malfunctions, activate trailer tow‐
ing, refer to page 249.
Safety information
WARNING
Depending on the design and loading of
trailers, they may begin swinging at speeds ex‐
ceeding approx. 50 mph/80 km/h. There is a
risk of accidents or risk of damage to property.
Adapt your speed when driving with a trailer.
Immediately brake in the case of swinging. Ap‐
ply necessary steering corrections as carefully
as possible.◀
WARNING
The tire inflation pressure must be ad‐
justed to the increased axle load in trailer tow‐
ing. Driving with too low tire inflation pressure
can damage the tires. There is a risk of acci‐
dents or risk of damage to property. Do not ex‐
ceed 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 in‐
flation pressure indicated on the tire.◀
Uphill grades
General information
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 start‐
ing off.
The parking brake is set.
2. Accelerated enough to start off.
Hills
A vehicle-trailer combination has the tendency
to swing more readily on hills.
Manually shift down to the next lower gear be‐
fore driving on a hill and drive downhill slowly.
High loads and external temperatures
NOTE
On long trips with heavy trailer loads,
high external temperatures and low tank con‐
tent, the fuel system can overheat, which re‐
duces the engine performance. There is a risk
of damage to property. Refuel promptly. On
long trips with heavy trailer loads and high ex‐
ternal temperatures, ensure that the fuel tank
is more than 1/4 full.◀
Seite 248
Driving tips Trailer towing
248
Online Edition for Part no. 01402984955 - X/17
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