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简介
If your car or truck won't start, it may be time to change the battery. A typical motor vehicle battery lasts about 3-4 years, but this lifespan can vary greatly depending on the conditions and your driving habits.
This guide uses a Toyota Corolla to demonstrate the procedure, which is similar for most motor vehicles.
If you just need to temporarily disconnect the battery rather than remove or replace it, follow this shorter guide.
Note: Disconnecting your battery may erase certain stored settings, such as radio/nagivation presets and power window memory. Consult your owner's manual for details.
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Make sure the transmission is in Park (or first gear if you have a manual gearbox) and that the parking brake is engaged.
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In addition to being dirty, the battery contains corrosive agents and may release flammable gases.
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Gloves can also help protect you from an unpleasant shock if you accidentally mishandle the battery.
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If you're not sure, simply continue reading.
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Pull the hood release lever. It's usually located inside the car, near the steering wheel.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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You should not just tell people to follow the directions in reverse order for reassembly. There are some steps most mechanics will want you to perform (e.g. applying a compound to the terminals to prevent corrosion) in addition to simply reattaching the cables.
As with most guides on iFixit, reassembly tips are included on the applicable step where appropriate.
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