Kia Optima Hybrid 2017 Owner's Manual page 522

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• Drive carefully and avoid bumps,
holes, sharp turns, and other road
hazards, which may cause the ve‐
hicle to bounce.
• Avoid sharp turns or locked wheel
braking.
CAUTION
• Chains that are the wrong size or
improperly installed can damage
your vehicle's brake lines, suspen‐
sion, body and wheels.
• Stop driving and retighten the
chains any time you hear them
hitting the vehicle.
Use high quality ethylene glycol
coolant
Your vehicle is delivered with high quali‐
ty ethylene glycol coolant in the cooling
system. It is the only type of coolant
that should be used because it helps
prevent corrosion in the cooling sys‐
tem, lubricates the water pump and
prevents freezing. Be sure to replace or
replenish your coolant in accordance
with the maintenance schedule
page 9-09. Before winter, have your
coolant tested to assure that its freez‐
ing point is sufficient for the tempera‐
tures anticipated during the winter.
Check battery and cables
Winter puts additional burdens on the
battery system. Visually inspect the
battery and cables as described in Bat‐
tery on page 9-39.We recommend
that the level of charge in your battery
be checked by an authorized Kia dealer.
Change to "winter weight" oil if
necessary
In some climates it is recommended
that a lower viscosity "winter weight"
oil be used during cold weather. See
Recommendations on page 10-12. If
you aren't sure what weight oil you
should use, we recommend that you
consult an authorized Kia dealer.
Check spark plugs and ignition
on
system
Inspect your spark plugs as described in
9-21 and replace them if necessary.
Also check all ignition wiring and com‐
ponents to be sure they are not
cracked, worn or damaged in any way.
To keep locks from freezing
To keep the locks from freezing, squirt
an approved de-icer fluid or glycerine
into the key opening. If a lock is covered
with ice, squirt it with an approved de-
icing fluid to remove the ice. If the lock
is frozen internally, you may be able to
thaw it out by using a heated key. Han‐
dle the heated key with care to avoid
injury.
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