Volvo S90 Operation Manual page 70

1998 Volvo S90
Shiftlock release
The gear selector is locked in
the P position. To manually
release the shift lock, turn the
starting (ignition) key to
position I and press firmly on
the "OVERRIDE" button
(located under the cover near
the base of the gear selector -
see illustration). While
holding the override button
down, move the gear selector
from the (P)ark position.
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Electrical system
When replacing the battery or
when carrying out work
involving the electrical
system, the following should
be observed:
A battery connection to the
wrong terminal will damage
the diodes. Before
connections are made, check
the polarity of the battery
with a voltmeter.
If booster batteries are used
for starting, they must be
properly connected to
minimize the risk of the diode
being damaged.
For correct connection, see
"Jump starting" section.
Never disconnect the
battery circuit (for example,
to replace the battery) while
the engine is running, as this
will immediately ruin the
generator. Always make sure
that all the battery
connections are properly
tightened.
If any electrical-welding
work is performed on the
vehicle, the battery's ground
lead (negative cable) and all
the connecting cables of the
generator must be
disconnected and the welder
cables placed as near the
welding point as possible.
The radio must be turned
off before the battery is
disconnected.
If the radio has an antitheft
code and the battery has been
WARNING!
The Supplemental Restraint
System is grounded under the
driver's seat. Do not loosen the two
screws grounding the unit. Do not
ground other electrical
components using these screws or
any other points near them. Faults
in the system could occur if it is
improperly grounded.