For 1990-2009 cars only
The battery is not designed to last indefinitely. The battery will provide many years of service with the proper care.
If the battery tests good but fails to perform satisfactorily in service for no apparent reason, the following are some important factors that may point to the cause of trouble:
| • | Accessories left on overnight with the key turned OFF. |
| • | Electrical load is more than the Accessory Power Module (APM) input, particularly with the addition of aftermarket equipment. |
| • | Battery abuse, including failure to keep battery cable terminals clean and tight or operating with a loose battery hold-down. |
| • | Mechanical conditions in the electrical system, such as shorted or pinched wires, or a cracked battery case resulting from a collision. |
The outside of the battery should be checked periodically for damage, such as a cracked cover or case.
