Battery Cable Replacement
What is a battery cable?
The battery cables in all passenger vehicles serve the same function. They allow electrical power to be transmitted to and from the battery.
How does the battery cable work?
The positive battery cable transmits power to the vehicle's computer, and starting and charging system, while the negative battery cable is connected to the chassis to provide a universal electrical ground for the entire vehicle. This creates a closed-loop system where power can continuously flow through the battery, and power all vehicle functions.
If the battery cables are found to be corroded, they will need to be cleaned and possibly replaced along with the starter.
What are the symptoms related to a bad battery cable?
The battery is considered “dead” when there is insufficient charge to start the engine, or run electrical components. When battery cables fail, this condition will occur. Normally, the first sign is dim lighting in the interior of the vehicle, and when attempting to start, the engine may crank extremely slowly, or not at all. A very rapid clicking noise is normally heard if there is any charge left in the battery, but in many cases, the vehicle will be completely unresponsive to any input. If the battery cables fail to transmit power while driving, the battery warning light will illuminate, and the engine may stall from lack of electrical power needed to run. Note, the battery may have plenty of charge, but the same symptoms are possible as that charge has no route out of the battery. In many vehicles manufactured from 1996 until present, the check engine light may illuminate, alerting the driver that an on-board diagnostics trouble code has been stored.