Odometer light problems

My odometer light will not turn off, even when I take the key out of the ignition. It is on 24/7, which is starting to cause problems to my battery. Is there anything I can do to remedy this problem?
The dealership has replaced the ignition switch, but that didn't solve the problem. Any help would be appreciated.:shakehead

Head under the hood and remove the IOD fuse from the fuse box next to the battery for 2-3 minutes. This will reset the Body Control Module (BCM). The BCM has the lamp drivers for most instrument lighting.