The power distribution center, or fuse block, located under the hood houses most or all of the vehicleâs fuses and relays. It contains a relay for the ECM that is powered up when the ignition key is turned to the on position. This ECM power relay acts as a switch that supplies power to the ECM.
How to Tell When It's Time to Replace Your Water Heater. A water heaterâs lifespan depends on several factors, including water quality, water temperature, and maintenance. As such, lifespans vary anywhere from 8-15 years.
That depends on its age. The older your hot water heater, the more likely youâre losing hot water energy heater savings. Consumer Reports suggests that if your water heater has a 12-year warranty and youâve been using it for 15, itâs likely time to look for one of the more energy-efficient options to maximize hot water heater energy savings.