What battery does the key for a 2006 Lexus IS 250 take?

The key fob for a 2006 Lexus IS 250 typically uses a CR2032 3-volt coin cell.

This is the standard battery for most Lexus remotes from that era. If your key looks slightly different or you’re unsure, check the existing battery or the owner’s manual for the exact specification.

Battery type and key design

In 2006, the IS 250 used a traditional remote key fob with a metal key blade, not a modern smart-key system. The battery sits in a small coin-cell compartment inside the fob, and CR2032 is the common choice due to its size and capacity.

How to replace the key battery

Follow these steps to replace the battery in the IS 250 key fob. The exact design can vary by market, but the general process remains the same.

• Identify the seam on the fob and gently pry it apart using a small flat-head screwdriver or a coin; work slowly to avoid damaging the plastic.


• Remove the old battery and note the orientation (positive side facing up).


• Insert a fresh CR2032 3V coin cell with the positive (+) side facing up. Avoid touching the battery contacts with your fingers to prevent oils from transferring.


• Snap the two halves of the fob back together until they click securely.


• Test the remote by pressing the lock/unlock buttons from a short distance to confirm operation.

If the remote still doesn’t work after replacement, ensure the battery is seated correctly, check for corrosion, or consult a dealer or locksmith for reprogramming or fob replacement.

Bottom line: A CR2032 coin cell will cover the vast majority of 2006 IS 250 key fobs. If your fob uses a different battery or won’t respond after replacement, seek guidance from a Lexus dealer or qualified automotive locksmith.

Compatibility notes

While CR2032 is the standard for most 2006 IS 250 remotes, rare variations by market or a specific fob design may use a different coin cell (for example, CR2025 or CR1616). If in doubt, inspect the existing battery for markings or refer to the owner’s manual or the dealer to confirm the exact type.

Summary

For a 2006 Lexus IS 250, the typical battery is the CR2032 3-volt coin cell. Replacement is straightforward with the steps above, and in most cases, no reprogramming is required after swapping the battery. If you encounter issues, contact a Lexus dealer or automotive locksmith for assistance.

How much is a 2006 Lexus IS 250 worth?

Estimated Values

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