CadillacCT4 CT4 Luxury RWD 1SB LSY MHA MY2025 US2025
Smart-key battery
CR2450 Lithium or equivalent battery
Own-model remote-key battery specification; follow illustrated polarity.
Car Key Fob Battery Finder by Model & Chassis Code
The same model family can use different keys. Match the exact code and key system before buying a replacement coin cell.
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