What does Battery Temperature Sensor entail

Central to your car's operation, the battery provides the power that starts and keeps the car going. It also acts to keep the power free of spikes by acting as a electrical filtering device, and provides the minimum electrical power levels needed to make sure your car's electrical devices and systems work correctly. Batteries are temperature-sensitive and a battery's optimal operating temperature range is 40 to 70 degrees Fahrenheit. Temperature also affects your battery's charging rate. To compensate for temperature variations during battery charges, car charging circuits include battery temperature sensors. The sensor is located on a battery terminal or the case. The battery sensor’s function is simple: if it senses a temperature variation, it orders the battery control module, or the computer control system in a car or truck, to change the charging rate. For example, if the sensor senses the battery is cold, it will request an increased charge rate from the alternator.

Keep in mind

• As a rule, battery temperature should be routinely inspected.
• The battery temperature sensor inspection should include the charging rate (terminal deposits), the cables (fraying or bare spots), and of the linkage
• point (corrosion or deposits).
• Proper battery charging may be impossible if high levels of wear are visible.

What are the common symptoms indicating you need a Battery Temperature Sensor

• Irregular charging rates
• Low battery voltage
• Corrosion or deposits on the battery or sensor connection
• Broken or bare sensor cabling

How it's done

• The battery is disconnected and removed
• The defective battery temperature sensor is removed
• The new battery temperature sensor is installed and connected
• The battery is reinstalled and connected
• The vehicle is tested for proper operation of the battery temperature sensor