2007 Chevrolet Cobalt Owner's Manual - Page 92

Battery Replacement Under normal use, the battery in your RKE transmitter should last about four years. The battery is weak if the transmitter will not work at the normal range in any location. If you have to get close to your vehicle before the transmitter works, it is probably time to change the battery. The KEY FOB BATT LOW message in the vehicle's DIC will display if the RKE transmitter battery is low. Notice: When replacing the battery, use care not to touch any of the circuitry. Static from your body transferred to these surfaces may damage the transmitter. To replace the battery in the RKE transmitter do the following: 1. Insert a flat object, with a thin edge, into the notch located below the vehicle locator/panic alarm button, and separate the bottom half from the top half of the transmitter. 92