1998 BMW CONVERTIBLE technical data

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BMW CONVERTIBLE 1998 Owners Manual 15 3
At a glanceControlsCar careRepairsTechnicalDataIndex
Never use spray starter fluids to start
the engine.
When the battery is discharged, you
can use two jumper cables to start your
car with po

15 3
At a glanceControlsCar careRepairsTechnicalDataIndex
Never use spray starter fluids to start
the engine.
When the battery is discharged, you
can use two jumper cables to start your
car with power from the battery in a
second vehicle. Always use jumper
cables with fully insulated handles on
the terminal clamps.a
When the engine is running, con-
tact with electrical conductors and com-
ponents is dangerous and can be fatal.c
Carefully observe the following instruc-
tions to avoid personal injury as well as
damage to one or both vehicles:
1 Ensure that the battery on the sup-
port vehicle is also rated at 12 volts,
and that the capacity (Ah) is roughly
comparable (printed on casing).
2 Leave your battery connected to the
car's electrical system.
3 The bodies of the two vehicles must
not touch, or a short circuit could
result.4 Start by connecting the positive ter-
minal of both batteries with a jumper
cable. If the battery of the BMW is not
installed in the engine compartment,
a supplementary positive terminal is
provided in the engine compartment
(the cover is marked "+", remove by
pulling tab, see arrow 1 in illustration).
Then connect up the batteries' nega-
tive poles. Attach the cable to either
the support vehicle's negative battery
terminal, or to a suitable ground on its
engine or bodywork. On the BMW
there is a special nut, refer to arrow 2;
the nut might also be located further
forward, on the suspension strut
dome.
a
Observe the same sequence for
connecting the jumper cables when
helping other vehicles; this will help pre-
vent sparks from being generated at the
battery.c
5 If the battery on the support vehicle is
weak, start the engine and let it run.
Start the engine on the vehicle need-
ing the jump-start, and allow it to run
as usual. If necessary repeat the
attempt to start after a few minutes;
this allows for current intake by the
discharged battery.
Before disconnecting the jumper
cables from your BMW, turn on the
lamps, rear window defroster and
highest blower speed to prevent a
voltage surge at the voltage regulator.
Then disconnect the jumper cables in
reverse sequence.
Depending on the cause of the fault,
recharge the battery.
12
360de105
Jump-starting