Bottom-freezer models like the 46-75645 put the compressor and most of the sealed system underneath the fresh-food compartment, so a warm-running fridge on this configuration is diagnosed starting from the airflow path between the two compartments rather than assuming a compressor failure outright.

Compact units like the KMR25MS1E use a simpler, smaller-scale version of the same sealed-system principles as a full-size refrigerator, which actually makes diagnosis quicker — fewer components, and a mechanical dial instead of electronics to rule out.

The 46-75615 is a larger-capacity French door model, and at this size the dual-door seal alignment matters more than on a narrower unit — a door that seems to close fine but isn’t sealing evenly on both sides is one of the more common causes of the temperature complaints we see on this model.

A compressor that never seems to cycle off is one of the most common Kenmore refrigerator complaints, and it doesn’t always mean the compressor itself is failing.

A Kenmore French-door refrigerator and a side-by-side model don’t wear out the same way — knowing the difference helps you catch problems earlier.

The 46-75525 is one of Kenmore’s current French door refrigerators, a straightforward mid-size layout without the ice/water dispenser electronics that add extra failure points on larger models. Most service calls on this unit trace back to a sealed-system or door-seal issue rather than anything electronic.

Top freezer refrigerators like the 46-61332 are Kenmore’s simplest, most repair-friendly configuration — fewer electronic components than a French door or side-by-side, and a mechanical layout that’s well understood across decades of Kenmore’s top-freezer lineup.

Side-by-side Kenmore refrigerators carry more dispenser and ice-maker electronics than a basic top-freezer model, which is convenient day to day but does mean more components that can individually need service over the unit’s life. Cooling and dispenser faults are diagnosed as separate systems.

Many Kenmore refrigerators from the 1990s and 2000s were built by Whirlpool on a simple mechanical dial platform with no digital display at all — there’s no code to read, so a unit this age is diagnosed the same way any aging compressor appliance is: thermostat, door seal, start relay, and compressor performance tested directly.