2019 Toyota Tundra Battery Size & Group

Quick Answer

• BCI Group Size: 24F
• CCA Rating: 710 CCA minimum
• Reserve Capacity: 130 minutes minimum
• AGM vs. Flooded: Flooded is standard; AGM is a popular upgrade.
• Terminal Layout: Top post, Positive on Left (when terminals are facing you).
• Physical Dimensions (Group 24F): Approximately 10.75" L x 6.81" W x 8.88" H
• Dual-Battery Setup: Not applicable (gasoline engine).

Replacement Battery Options

Here are some popular replacement battery options for your 2019 Toyota Tundra:

• Interstate: MTX-24F (Mega-Tron Plus)
• Optima: 8016-103 D34/78 (YellowTop, dual-purpose deep cycle and starting, requires adapter for Group 24F fitment)
• DieHard: Platinum 24F (AGM)
• Odyssey: 24F-750 (Extreme Series AGM)
• ACDelco: 24FPG (Professional Gold)

AGM vs Flooded — Which Does This Vehicle Need?

The 2019 Toyota Tundra originally came equipped with a flooded lead-acid battery. This type of battery is perfectly capable of meeting the vehicle's power demands and is generally more affordable. However, an Absorbed Glass Mat (AGM) battery is a very popular and often recommended upgrade.

Flooded batteries are the traditional choice. They contain liquid electrolyte that covers lead plates. They are generally reliable and cost-effective.

AGM batteries use a glass mat separator to absorb the electrolyte, holding it in place. This design offers several advantages:

• Improved Durability: More resistant to vibration and impacts.
• Longer Lifespan: Often last longer than flooded batteries under similar conditions.
• Better Performance: Generally provide more consistent power throughout their life and better cold-weather performance.
• Maintenance-Free: No need to check or add water.
• Leak-Proof: Can be mounted in various positions without leaking.

While your Tundra doesn't require an AGM battery, upgrading to one can provide enhanced reliability and longevity, especially if you live in extreme climates, use many electronic accessories, or frequently make short trips. Your vehicle's charging system is compatible with either type.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2019 Toyota Tundra, you may experience some minor issues like a rough idle, inaccurate fuel gauge, or illuminated warning lights. This is normal as the vehicle's onboard computer (ECU) has lost its learned parameters. Follow these steps for a basic reset:

1. Install the new battery securely, ensuring terminals are clean and tight.
2. Start the engine and let it idle for at least 10-15 minutes without touching the accelerator. This allows the ECU to relearn idle parameters.
3. Drive the vehicle for a short period (around 15-30 minutes) under varying conditions (city and highway driving, if possible). This helps the transmission and other systems re-adapt.
4. Window Auto Up/Down Reset (if needed): If your power windows' auto up/down function isn't working, roll each window all the way down, then hold the switch up until the window is fully closed and continue to hold for an additional 2-3 seconds.
5. Radio Presets: You will need to re-enter your radio station presets.
6. Clock: Reset the time on your dashboard.

In most cases, any persistent warning lights (like the Check Engine Light or VSC light) will clear themselves after a few drive cycles once the ECU has re-learned all necessary parameters. If a light remains on after several days, it may indicate another underlying issue that requires diagnosis.

Signs of a Failing Battery

Recognizing the signs of a failing battery can help you avoid being stranded:

• Slow Engine Crank: The most common sign. The engine turns over slowly or struggles to start.
• Dim Headlights/Interior Lights: Especially noticeable when the engine is off or cranking.
• Clicking Sound: When trying to start the car, you might hear a rapid clicking sound, indicating insufficient power to engage the starter.
• Warning Lights: A battery or charging system light on your dashboard.
• Corrosion on Terminals: White or blue powdery substance on the battery terminals can indicate a leak or poor connection, though it doesn't always mean the battery itself is bad.
• Swollen/Bloated Battery Case: A severely swollen battery case is a clear sign of internal damage and requires immediate replacement.
• Old Age: Batteries typically last 3-5 years. If yours is older, it's wise to have it tested proactively.

Common Battery Issues for This Generation

The 2019 Toyota Tundra, like many modern vehicles, relies heavily on its electrical system. While generally reliable, there are a few considerations related to the battery:

• Parasitic Draws: Aftermarket accessories (like stereos, alarms, remote starters) or even a malfunctioning factory component can draw power when the vehicle is off, leading to a dead battery over time. If your battery dies repeatedly even after replacement, investigate possible parasitic draws.
• Short Trip Driving: If you primarily make short trips, the alternator may not have enough time to fully recharge the battery, leading to premature battery wear and eventual failure.
• Terminal Corrosion: While not unique to the Tundra, regular inspection and cleaning of battery terminals can prevent poor connections and ensure optimal charging.
• OEM Battery Lifespan: The factory-installed battery in many vehicles, including the Tundra, sometimes has a shorter lifespan than premium aftermarket options. Don't be surprised if the original battery only lasts 3-4 years.

Find a trusted shop on Repairius.