Is the battery in your Subaru about to go out? Find out what causes automotive battery failure. Contact your Subaru Repair experts in Denver Colorado: www.mcdonaldindependent.com/mcdonald-service-center.htm It is important to have batteries tested to help identify their performance level.s Subaru original-equipment batteries are covered by the Subaru New Car Limited Warranty for 3 years/36,000 miles.

1. Subaru Battery Diagnostic
Service
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2. Subaru Battery

3. Battery Cell Construction
• Within a vehicle’s lead-acid battery case are cells filled with electrolyte.
• Each cell has plates made of active materials contained in cast grids. Plate
grids are flat, rectangular, lattice-like castings.
• Positive plates contain lead dioxide. Negative plates contain sponge lead
dioxide.
• In each cell, positive and negative plates alternate.
• To ensure plates don’t touch, separators are inserted between them.
Separators are made of nonconduction material. They are chemically
resistant to sulfuric acid, strong, and yet porous enough to allow electrolyte
passage. They prevent active chemicals from touching each other.
• The assembly of plates and separators is called an element. There is one
element per cell.
• Each cell produces approximately two volts. Battery cells are connected in
series to produce different voltages. A vehicle requires 12 volts, or six two-
volt cells.

4. Sick Battery Symptoms
• Headlights dim excessively at idle
• Headlights dim excessively when air
condition or electrical accessories are
turned on
• Slow or interrupted engine cranking,
especially in cold weather
• Battery requires jump-start or recharging
• Cracked, loose or squealing alternator
belts

5. Subaru Battery Failure
• About one in every three batteries fails
after three years.
• Subaru Battery Diagnostic Service can
help you find out just how much life is left
in your battery,

6. Genuine Subaru Battery
• Powered for today’s electronics. Genuine
Subaru batteries are engineered to supply
it while meeting the performance
specifications of your vehicle
• It is extremely important to have your
Subaru’s battery checked by a Subaru-
trained technician regularly.

7. Subaru Battery Maintenance
• It is important to have batteries tested to help
identify their performance levels. Subaru
original-equipment batteries are covered by the
Subaru New Car Limited Warranty for three
years/36,000 miles. Subaru replacement
batteries come with an 85-month limited
warranty when installed by an authorized Subaru
dealer, and a 30-month/unlimited-mileage free
replacement with free towing to the nearest
Subaru dealer if the vehicle is inoperable due to
battery defect.