Mazda 5 Battery Replacement Guide

Can’t start your Mazda 5 due to a dead battery? This guide provides instructions on how to replace the battery on Mazda 5 models from 2010 through 2018.

Signs Your Mazda 5 Battery Is Failing

• Slow or labored cranking, especially on cold mornings
• Clicking when you turn the key or press start, with dim dash lights
• Electrical glitches: flickering lights, radio resets or random warning lights
• A battery warning light or a battery older than about four to five years
• Swollen case, leaking acid or heavy corrosion on the terminals

Confirm the Battery Is the Problem

• With the engine off, a healthy battery reads about 12.6 volts. Below about 12.2 volts it is significantly discharged.
• Most parts stores will load test the battery for free.
• With the engine running, voltage should read roughly 13.5 to 14.8 volts. If not, check the alternator before replacing the battery.
• Clean corroded terminals first; a poor connection can mimic a dead battery.

A scan tool such as the YOUCANIC UCAN-II Pro shows live battery and charging voltage on supported models, which helps you tell a worn battery from a charging problem.

What you will need

• Group 35 Battery
  • The battery cold cranking amps should be at least 500 A or higher.
• Battery Terminal Cleaner
• Metric Mechanic Toolset
  • 10mm Socket
  • 3/8″ Ratchet Wrench

Procedure

1. Turn off the engine. Step one is to turn off the ignition before replacing the car battery on your Mazda 5. Mazda can be sensitive to voltage drops, and keeping the key in the ignition can cause electrical problems.
2. Open hood. Pull the hood release to open the hood.
3. Locate Battery. In your Mazda 5, the battery is located in the engine bay. 
4. Disconnect the negative terminal. Use a 10mm wrench to loosen the negative (-) battery terminal nut. Disconnect the negative battery terminal on your Mazda.
5. Disconnect the positive terminal. Next, disconnect the positive battery terminal.
6. Identify the battery bracket. Remove the battery hold-down bracket. Here is a close-up picture of the battery bracket on your Mazda 5.
7. Remove the battery from the bracket. Remove the old battery. Install the new battery.
8. Clean battery terminals with a terminal brush or sandpaper. This will ensure there is a good connection to the
9. Connect the new battery: Reconnect battery terminals. First, connect the positive battery cable to your Mazda 5. Lastly, connect the negative terminals. Use fiber washers to prevent corrosion of the battery terminals.

To change the battery on the 2010 to 2018 Mazda 5, you will need a few basic tools, a new battery, and about 20 minutes.

For more help with your Mazda 5, check out these Mazda maintenance guides and tips.

Frequently Asked Questions

What battery does a Mazda 5 use?

A group 35 battery with at least 500 cold cranking amps fits the 2010 to 2018 Mazda 5.

Where is the battery on a Mazda 5?

It is in the engine bay, held down by a bracket.

How do I know if my Mazda 5 battery is bad?

Slow cranking, clicking, dim lights and a resting voltage below about 12.2 volts are common signs. A free load test at a parts store confirms it.

Which terminal do I disconnect first?

Disconnect the negative terminal first and reconnect it last.

Related Guides

• 2010 to 2018 Mazda 5 Jump Start Dead Battery
• How to Replace the Combination Switch on a 2013 to 2018 Mazda 3 CX-5
• Replace Spark Plug & Ignition Coil Mazda 2013 to 2019 3 6 CX-3 CX-5
• Mazda 3 How to Replace the Battery (2013 to 2018)

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