BMW 840Ci, Руководство пользователя

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Changeable weather in the winter
months not only calls for a suitably
cautious style of driving but also for
certain measures to be taken on the
car, to ensure that it can be driven
safely and without problems through-
out the winter.
Coolant
Make sure that the required mixing
ratio of 50 to 50 parts of water and
long-life antifreeze and corrosion
inhibitor is present in the system all
the year round. It provides protection
down to a temperature of app. -37
6 .
Renew the coolant every 3 years.
Locks
Do not use de-icer, as it has a
degreasing effect and will impair the
functioning of the locks.
Rubber parts
To prevent the seals from freezing
together, treat rubber surfaces with a
rubber care product or silicone spray.
b
Suitable care products are avail-
able from BMW Service.
c
Snow chains*
BMW snow chains
*
, if used, must only
be fitted to both rear wheels (with
summer or winter tyres), making sure
that the manufacturer's safety instruc-
tions are observed. Do not exceed
50km/h (31 mile/h) with snow chains
fitted. To enhance traction, it is best to
switch off ASC+T/DSC if snow chains
are in use; see Page 74.
Moving off
To move away in deep snow or to
"rock the car free" it is best to switch
off ASC+T/DSC; see Page 74.
Driving on slippery roads
Operate the accelerator pedal sensi-
tively, avoid high engine speeds and
shift up to the next higher gear early.
On uphill or downhill gradients, select
the next lower gear in good time.
Maintain a generous distance from the
vehicle in front as a safety precaution.
Brakes
Winter road conditions greatly reduce
the amount of tyre grip that is avail-
able, so that the driver must expect
braking distances to be considerably
longer than usual in every situation.
ABS prevents the wheels from lock-
ing, so that the car remains stable and
can always be steered. Should the
ABS fail and the road wheels lock,
reduce pressure on the brake pedal
immediately so that the wheels can
still turn although they are being
braked. Then increase pedal pressure
again until the same situation occurs,
and repeat this as often as necessary.
This cadence braking principle cuts
braking distances and keeps the car
steerable, so that you can try to drive
round obstructions at reduced braking
pressure.
a
Do not shift to a lower gear as a
means of braking the car if the road
surface is slippery, or the rear wheels
may slide and control of the car may
be lost. ABS and ASC+T/DSC cannot
prevent this situation, as they do not
influence this method of slowing
down the car.
c
Winter operation
Online Edition for Part-No. 01 41 9 790 191 - © 12/98 BMW AG