Transmitter, Integrated Key Fob: Specifications: Specifications: Battery
WARNING: This page is about a different car, the 2012 Dodge Charger. However, it is still accessible from the selected car via links, so may be relevant.
The FOB with Integrated Key (FOBIK) transmitter is powered by a single 3-volt lithium and manganese dioxide button cell battery, which can be removed and replaced without special tools. Refer to TRANSMITTER, INTEGRATED KEY FOB, STANDARD PROCEDURE . The international standard battery type designation is: CR2032 . This battery type is available at many local retail stores. Typical battery life is approximately three years.
CAUTION:
Do not handle the batteries any more than necessary. Hands must be clean and dry.