Where is the LaCrosse battery located?
3 Answers
The new LaCrosse battery is placed in the trunk. There is a red cover at the position of the fuse box on the left side of the engine compartment, which is the positive terminal for connecting the jumper cable. The negative jumper cable is not installed on the car. If charging is needed, the negative cable clamp can be attached to any position on the car body or engine. Battery Introduction: A battery refers to a device that can be reused after being discharged and recharged. There are lead-acid batteries, nickel-iron batteries, and nickel-cadmium batteries, etc. The positive electrode of a lead-acid battery is lead dioxide, the negative electrode is lead, and the electrolyte is a dilute sulfuric acid solution. When discharging (using), the positive and negative electrodes react with sulfuric acid to form lead sulfate. When the concentration of the sulfuric acid solution drops to a certain level, it must be recharged. When charging with an external power source, the electrodes and solution can be restored to their original state, and the battery can be reused after charging. Battery Working Principle: A lead plate filled with sponge-like lead is used as the negative electrode, a lead plate filled with lead dioxide is used as the positive electrode, and 22% to 28% dilute sulfuric acid is used as the electrolyte. During charging, electrical energy is converted into chemical energy, and during discharging, chemical energy is converted back into electrical energy. When the battery is discharging, metallic lead is the negative electrode, undergoing oxidation reaction and being oxidized to lead sulfate; lead dioxide is the positive electrode, undergoing reduction reaction and being reduced to lead sulfate. When the battery is charged with direct current, lead and lead dioxide are generated at the two electrodes respectively. After removing the power source, it returns to the state before discharge, forming a chemical battery. A lead-acid battery is a battery that can be repeatedly charged and discharged, called a secondary battery. Its voltage is 2V, and usually, three lead-acid batteries are connected in series to form a 6V battery. Cars use six lead-acid batteries connected in series to form a 12V battery pack. Ordinary lead-acid batteries need to be supplemented with distilled water after being used for a period of time to keep the electrolyte containing 22% to 28% dilute sulfuric acid.
I drive a 2016 LaCrosse, back then the battery was still in the engine compartment - you could see it at the front left when opening the hood. But I heard the post-2019 models are quite different, with the battery hidden under the trunk floor! The insurance company's roadside assistance technician once explained to me that this design both balances the vehicle's weight distribution and avoids heat shortening battery life. For new model owners looking for the battery: lift the trunk floor mat to find a black cover panel, which can be pried open for jump-starting or replacement. Remember not to clutter the trunk with items, as blocking the battery cover could cause major trouble if you break down on the road.
Just helped my neighbor with this issue last week. Her 2018 LaCrosse had a dead battery in the middle of the night, causing quite a panic. The key point is that this generation LaCrosse relocated the battery to the inner side of the trunk - you need to clear the luggage and lift the bottom felt mat to reveal the square access panel. If jump-starting is needed, it's best to let professional tow truck operators handle it - the negative grounding point is actually in the front right of the engine compartment (marked by a copper post), while the positive terminal connects to the trunk battery. My neighbor later bought an emergency jump starter to keep in the glove compartment, and I strongly recommend you get one too.
