I have an LG DLE2532W dryer. It suddenly stopped putting out heat. I've heard that there's a heat regulator switch that can trip if the unit overheats located underneath the barrel. What's the easiest way to gain access to this to reset it? Anything would help. Also, if I can gain access to this switch, I can probably gain access to the heating element/thermostat unit through the same method. If it's not the switch, it's probably the heating element/thermostat, correct?

SOURCE: LG DRYER DLE2532W DISASSEMBLY INSTRUCTIONS

you may have a line down on your power 220 comes in one leg runs motor one heater if one line is down it will run if motor leg is getting 110 dryer will run but not heat if motor 110 is down wont do nothing reset your breaker before taking apart they can partialty trip then check out let for 220 last check power cord at terminal block before tear down

SOURCE: LG DRYER DLE2532W DISASSEMBLY INSTRUCTIONS

DLE2532W is an electric heat model. (a gas model would be a DLG......) To get a rear control LG dryer apart: Open door and remove two phillips head screws at the 5 and 7 o'clock positions. Use a putty knife to release the clips holding the top panel to the dryer front by pushing the clips in at the seam of the dryer top and front, a couple inches in from each side. Swing top back. Remove two phillips head screws at the top, allowing front panel to pull forward. Unplug drum light and door switch and drum sensor plugs, allowing front panel to be completely removed and set aside. Now, look at the burner area at the lower right. Behind the gas valve you will find a small (about dime sized) high limit thermostat on the left side of the burner cone. It has two wires attached and has a small pin in the center of it. (Only on gas models) Push the pin in.
Now, if that get's you ignition again, CORRECT VENTING ! Get rid of flexible vent material. (use only rigid aluminum vent pipe and elbows) Clean out vent pipes and outside vent hood. Outside vent hood should be the kind with a four inch flap for the opening, not a two inch flap. Tripping of the high limit thermo is almost always caused by inadequate air flow.

SOURCE: LG DLE2532W NO HEAT

Sounds like the heater element is bad that is the main cause for them not to heat up . Their should be a cover on the back that comes off and you can get to the heater element after removing it .

SOURCE: heater element-how do you change?

take puttyknife put between top and front panels about two to three inches from sides one at a time push in to release tab top will flip up two screws at top front corners pull front panel toward you unplug door switch and remove front panel then take four screws from roller and duct panel and remove from latches and unplug conector underneath set roller panel aside remove belt from will walk you thrugh the rest