Maytag's MDB4949SKZ front-control dishwasher is frequently purchased for strong wash cycles and a reputation for durable mechanical components. Repair vs replace generally depends on whether you're dealing with a single failure (drain pump, latch, inlet valve) or multiple high-cost items like the circulation pump plus control electronics.
Repair is typically the right call when the unit is mid-life or younger and the issue is isolated, since common parts are available and straightforward to diagnose. Replacement becomes more compelling when there are recurring leaks, repeated electronic faults, or when both pump and heating-related problems appear together.
Given the relatively modest replacement price, avoid sinking large labor bills into an older unit with worn racks and degraded seals. The price is based on a current major-retailer listing for this exact model.