11 years old - been out in the garage as the spare for 5 years now. Although we are in Chicago; the garage never gets below 35dgF all winter.
1 to 5; 5 being coldest - both settings on 4.
Top Freezer goes to 15dgF.
Bottom Fridge only gets to 50dgF.
Any simple ideas? Dust on the coils?
Turn it to 1 and keep your beer in the "freezer" 
freezer and fridge are both high on temp. start w/ cleaning condenser coil, it should be done periodically n e way. unplug unit then vac coil. don't restart unit for at least five- ten minutes after it's been unplugged.
many possibilities if it still persists, look here:
http://www.applianceoutletservice.com/troubleshooting-guide/refrigerator-troubleshooting-guide.htm
Yah, I would guess that in a garage location it could get pretty dirty. Got pets? Pet hair can really accumulate if the coils are under the unit, as most of them are nowadays.
In reply to pete240z:
What sort of fridge? I had the same problem in the fridge at my new house just last week. As it turns out, in my particular model of fridge (a Kenmore top freezer), the coils are in the freezer compartment, and a fan blows the chilled air down into the fridge compartment. This fan was what had failed.
Whirlpool Top-Mount Refrigerator #ET21GKXHW.
I vacuumed the coils at lunch. The manual states to watch your not blocking the vents and to turn it off for 10 minutes and restart.
We shall see - maybe that fan is bad......
don't block the airflow to the condenser either
Looking at the diagrams on searspartsdirect.com for that fridge, definitely looks like my fridge. Pop off the access panel at the back of the freezer (which I am assuming you've done to get at the coils)...when I did that I saw the fan trying to move and not doing a very good job of it. I helped it along by rotating the fan blade, and after I did that the fridge was great until the part came in to fix it.
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