Is your 2004 Lexus GX470 key fob starting to act up? A common culprit is a dead or dying battery. Knowing the correct battery type for your key fob is essential for a quick and hassle-free fix. This guide will walk you through identifying the right battery for your 2004 Lexus GX470 key fob and ensure you get back to unlocking your SUV with ease.
Determining the correct battery for your 2004 Lexus GX470 key fob can sometimes be confusing. While the owner’s manual is always the best resource, real-world scenarios can present slight variations. Online forums and discussions reveal that while CR1616 is often cited as the standard battery, some key fobs might contain or even function with a DL1620 or CR1620 battery.
Let’s break down the battery types mentioned and clarify what’s best for your 2004 GX470 key fob.
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CR1616 Battery: This is frequently referenced as the original or recommended battery for Lexus key fobs of this era, including the 2004 GX470. The “CR” designation signifies a lithium battery, and the “1616” indicates its dimensions: 16mm in diameter and 1.6mm in thickness.
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DL1620 Battery: The “DL” prefix typically indicates a Duracell brand battery. A DL1620 is essentially the same as a CR1620 battery. The “1620” denotes a 16mm diameter and 2.0mm thickness. This battery is slightly thicker than the CR1616.
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CR1620 Battery: As mentioned, this battery shares the 16mm diameter but is 2.0mm thick. It’s physically larger than the CR1616. While some users have reported that a CR1620 can work in a key fob designed for CR1616, it’s generally not recommended due to the size difference, which could potentially put stress on the fob’s internal components over time. However, in some cases, it might function without immediate issues, possibly even offering a slightly longer lifespan due to its higher capacity.
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CR2016 Battery: This battery type, with a “20” prefix, indicates a 20mm diameter and 1.6mm thickness. While some later Lexus models around 2007 onwards might use a CR2016, it’s less likely to be the intended battery for a 2004 GX470 key fob.
So, which battery should you choose for your 2004 Lexus GX470 key fob?
The safest and most recommended choice is the CR1616 battery. This is most likely the battery your key fob was originally designed to use. It ensures the correct fit and function without risking damage to your key fob.
What if you find a different battery in your fob?
It’s not uncommon to find a DL1620 or CR1620 in a used vehicle’s key fob, as seen in the original forum discussion. This could be due to a previous owner using a readily available alternative. While these slightly thicker batteries might work, sticking with the CR1616 is the best practice to maintain the integrity of your key fob in the long run.
Always Double-Check Your Owner’s Manual
The most reliable way to confirm the correct battery is to consult your 2004 Lexus GX470 owner’s manual. As highlighted in the original forum, the battery type is usually specified in the section concerning key operation.
Page from the 2004 Lexus Land Cruiser owner's manual indicating CR1616 battery type for the key fob.
Refer to your owner’s manual for the definitive battery type. This image from a Land Cruiser manual (platform similar to GX470) shows CR1616 as the specified battery.
Changing the Battery in Your 2004 Lexus GX470 Key Fob
Replacing the battery in your 2004 Lexus GX470 key fob is a straightforward process you can typically do yourself. While specific steps can slightly vary depending on the exact fob design, here are general instructions:
- Locate the Notch: Examine your key fob for a small notch or opening. This is usually located on the side or bottom of the fob.
- Pry Open the Fob: Use a small flathead screwdriver or a coin inserted into the notch to gently pry the key fob casing open. Be careful not to apply excessive force to avoid damaging the plastic.
- Access the Battery: Once the fob is open, you’ll see the battery compartment. The old battery should be visible and easily accessible.
- Remove the Old Battery: Carefully remove the old battery. Note the orientation of the positive (+) and negative (-) terminals.
- Insert the New Battery: Install the new CR1616 battery, ensuring the correct polarity (positive side up, if indicated, or matching the orientation of the old battery).
- Close the Fob: Snap the key fob casing back together until it’s securely closed.
Testing Your Key Fob
After replacing the battery, test your key fob to ensure it’s working correctly. Try locking and unlocking your doors remotely and starting your vehicle (if your fob has a remote start function).
In Conclusion
For a 2004 Lexus Gx470 Key Fob Battery replacement, the CR1616 battery is the most appropriate and recommended choice. While alternatives like CR1620 might function, CR1616 ensures the best fit and long-term reliability for your key fob. Always consult your owner’s manual for verification and enjoy the renewed convenience of a working key fob!
