2016 Toyota Highlander Battery: Group Size, CCA & Replacement Guide

Quick answer: 2016 Toyota Highlander Battery Specs

• BCI Group Size: 24F
• Cold Cranking Amps (CCA): 582 A (minimum)
• Reserve Capacity (RC): 130 minutes (minimum)
• Battery Type: Flooded lead-acid (standard); AGM is an optional upgrade
• Terminal Layout: Left-hand positive (+)
• Dimensions (L x W x H): Approximately 10.25 x 6.8 x 8.8 inches
• Dual-battery setup: N/A

Replacement battery options

When your 2016 Highlander's original battery begins to fail, several popular and reliable replacement options are available. Many owners choose to upgrade to an Absorbed Glass Mat (AGM) battery for longer life and better performance, especially in extreme climates. Here are some trusted choices:

• Interstate MTX-24F (AGM): A very popular AGM upgrade with a strong warranty and higher CCA than stock.
• DieHard Gold 24F (Flooded): A direct-replacement flooded battery that meets or exceeds OEM specs.
• ACDelco 24FAGM Professional (AGM): A high-quality AGM option often praised for its durability.
• Optima YellowTop DH6 (AGM): A premium, deep-cycle AGM battery ideal for vehicles with heavy electronic loads (e.g., aftermarket sound systems, dash cams).
• Odyssey Performance 24F-720 (AGM): A top-tier AGM known for its exceptional cranking power and very long service life.

AGM vs flooded — which does this vehicle need?

The 2016 Toyota Highlander came from the factory with a standard flooded lead-acid battery. This is a reliable and cost-effective technology that serves the vehicle's needs perfectly well. You are not required to upgrade to an AGM battery.

However, an AGM battery can be a worthwhile investment. AGM batteries are fully sealed, spill-proof, and more resistant to vibration than their flooded counterparts. They also typically offer higher CCA ratings and a longer service life. For drivers in very hot or cold climates, or for those whose driving style involves many short trips, an AGM can provide an extra margin of reliability. If your Highlander is equipped with the optional start-stop system (not common on this model year, but worth checking), an AGM battery is strongly recommended.

Post-installation relearn / reset procedure

Fortunately, the 2016 Toyota Highlander is relatively straightforward when it comes to battery replacement. Unlike many newer vehicles, it does not require a complex computer registration or relearn procedure with a diagnostic scan tool.

However, disconnecting the battery will reset several of the vehicle's electronic systems. Here’s what you can expect to do after the new battery is installed:

1. Power Windows: The auto-up/down feature will need to be re-initialized. For each window, press and hold the "down" button until the window is fully open, then continue holding for 2 seconds. Then, press and hold the "up" button until the window is fully closed, and continue holding for 2 seconds. The auto function should now be restored.
2. Radio Presets: Your saved AM/FM radio stations will be erased. You will need to manually re-tune and save your favorite stations.
3. Idle Relearn: The engine control unit (ECU) will have lost its learned idle settings. The engine may run slightly rough or idle low for the first few minutes of driving. This is normal. The ECU will automatically relearn the correct idle strategy within a few drive cycles.

Signs of a failing battery

• Slow Engine Crank: The most common symptom. The engine turns over sluggishly, especially on cold mornings.
• Dimming Lights: Headlights and interior lights may dim when you start the engine or when electrical accessories are turned on.
• Warning Lights: A battery or charging system warning light may illuminate on the dashboard.
• Corrosion: A build-up of white or bluish powder around the battery terminals is a sign of leaking acid and a failing seal.
• Age: Most car batteries last 3–5 years. If your battery is approaching this age, it’s wise to have it tested.

Common battery issues for this generation

The third-generation Highlander (2014-2019) is not known for any specific, widespread battery problems. The primary issues are typical of any modern vehicle. Parasitic drains can be a culprit if the battery dies repeatedly. This can be caused by a faulty aftermarket accessory (like a remote starter or alarm), a glove box light that stays on, or a failing electronic module. If you experience a battery that dies overnight without an obvious cause (like leaving the lights on), a technician will need to perform a parasitic draw test to isolate the faulty circuit.

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