G9280-47110 | 2004-2009 Toyota Prius Hybrid Battery Pack

Fit In Five Steps

How to replace a Toyota Prius Hybrid Battery Pack?

1.Secure Vehicle

Park on a flat, level surface at a safe distance from traffic, sparks or open flames. Put on the parking brake. Don’t smoke, and make sure any smokers in proximity to the working area know not to smoke as well. Remember that electricity is not the only danger; batteries contain a sulfuric acid electrolyte solution, which is highly corrosive (i.e. can burn your skin) and produces a flammable hydrogen gas. Put on gloves and safety goggles. Complementary metal–oxide–semiconductor (CMOS) will keep the PIN codes and settings for radios and navigation systems from getting erased when you disconnect the battery. If you don’t have a memory keeper make sure you have all the PINs for your electronic equipment before you start. You may wish to check your car manual to see what devices may be affected. After opening your hood, use the prop rod to keep your hood open (Most newer cars have hoods that hold themselves up.

2.Locate & Identify Battery Terminals

The battery should be located in an accessible part on either side of the car’s frame. The battery is a rectangular box with two cables attached to it. Some European cars (some BMW’s) have the battery under the matting in the trunk, some vehicles can have the battery located under the rear seat, or some are located inside the fender of the wheel well (some Chrysler’s). The latter is often very difficult to remove. Locate the positive and the negative terminals of the old car battery. The positive terminal will have a plus sign (and is often red) and the negative terminal will have a minus sign (and is often black).

3.Remove the Old Battery

Loosen the negative cable clamp with a wrench (Usually 8mm or 10mm) and slide it off of the terminal. If the cables are unmarked, label them so that they don’t get mixed up (otherwise you may ruin your car’s electric system later on). It is also important that you disconnect the negative terminal socket from the positive terminal socket. Otherwise, you may short-circuit the positive terminal to a grounded part of the car. Disconnect the positive terminal. Unfasten the battery holder and remove any screws, clamps or bars holding the battery in place. Carefully lift the battery out of the car. Remember that a battery can weigh 30 to 60 pounds or 13.5 to 27 kilos, so if you have any back problems, get a helping hand.

4.Install New Battery

You can use a baking soda solution and a wire brush. If there’s any severe corrosion to the terminal ends or the cables, consider repair or replacement by a mechanic. Otherwise, let the area dry before moving onto the next step. Place the new battery where you just took the old battery out, with the positive and negative terminals on the correct sides. Connect all the screws, clamps or bars that may hold the battery in place.

5.Retighten Removal Parts & Disposal Wastage

Reconnect the positive terminal and the negative terminal. Tighten the clamps using a wrench. Spray the terminals with lithium grease to prevent corrosion. Shut the hood of your car firmly and start your car. Check that all the electronic devices are working properly. Remove any battery memory saver that was installed to save the radio memory. Dispose of the used battery at service garages, auto supply stores, and recycling centers. There may be a small fee for the service, but throwing the battery away as normal garbage is not an option.