What battery does a 2020-2026 Cadillac CT4 key fob take?

The 2020-2026 Cadillac CT4 key fob takes a CR2450 coin cell, confirmed against two independent sources. Pop the fob open and read the marking on the old battery to confirm before you buy.

How do I change the key fob battery on a CT4?

Find the small seam or slot on the fob (often near the keyring loop) and gently pry the two halves apart with a coin or a small flathead. Note which way the old CR2450 sits, pop it out, and drop the new one in the same orientation (usually positive side up). Snap the fob back together. If the buttons feel unresponsive after, re-seat the cell.

2020-2026 Cadillac CT4 key fob battery

The coin cell your CT4 key fob takes, confirmed against two independent sources. The marking on your old battery is the final confirmation.

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Key fob battery

Verified · 2 sources · Jun 2026

CR2450

Find a CR2450 on Amazon

Cross-checked against two independent sources. Pop open your fob and check the marking on the old cell before you buy — it's the final word, and it confirms which fob style yours is.

CT4 key fob battery questions

What battery does a 2020-2026 Cadillac CT4 key fob take?: The 2020-2026 Cadillac CT4 key fob takes a CR2450 coin cell, confirmed against two independent sources. Pop the fob open and read the marking on the old battery to confirm before you buy.
How do I change the key fob battery on a CT4?: Find the small seam or slot on the fob (often near the keyring loop) and gently pry the two halves apart with a coin or a small flathead. Note which way the old CR2450 sits, pop it out, and drop the new one in the same orientation (usually positive side up). Snap the fob back together. If the buttons feel unresponsive after, re-seat the cell.