Auxiliary Battery Malfunction Step-by-Step Diagnosis and Repair

The smaller battery is the auxiliary battery and it must be failing. Part of the point in the dual battery system is to keep you safely ... It is highly recommended to disconnect the battery terminal when doing anything in the car, Open the carpet and it is easily seen, remove the plastic cover and ... I am getting a code "218219 Starter unit, charging controller for auxiliary battery: Aged Auxiliary Battery". This is not surprising for a ... Most things I've read say you should change both batteries when you need to change 1, it could be your main going bad that drove the AUX to fail. If your car has a faulty auxiliary battery, it can cause your electrical components and safety features to stop working. The car's features ... Take it to the dealer now. The Auxiliary battery controls many of the functions on the car. The main battery is for starting only. To begin, turn off the engine of your car, open the hood, and locate the auxiliary battery, typically positioned near the main one. Proceed by ... When it starts showing signs of battery failure, it is best to replace both of them. The most common sign is the Aux Switches or ESS Unavailable ... Learn how to diagnose and address an auxiliary battery malfunction in your vehicle with this comprehensive guide! Auxiliary batteries play a ... If it's a bad cell or a shorted cell then you can definitely cause problems trying to use the vehicle. If it's just a weak battery (low CCA) ...