Symptoms of a Bad or Failing ECM-Power Relay. The ECM, or electronic control module, is the computer responsible for controlling all of the engine management functions. It is the central control unit of most vehicles and controls a variety of functions, such as electrical system power distribution, emissions, ignition, and fuel systems.
1 Replace the tire if the top of Abe's head becomes uncovered by any of the grooves.  If your tires are only partially worn, find out how much. Stick a tread-depth gauge (about $5 at auto-parts stores) into each of the grooves on all four tires, as shown in the photo below. Then check how many inches of usable tread remain and match your driving to the tread wear.
With Bad Weather on the Horizon, Now's the Time for New Tires. While most passenger car tires come new with at least 10/32 of tread depth, most people don't realize that once the tire has less than 6/32 of remaining depth, your wet road and snow traction capabilities dramatically decrease. Even if the tire looks like it has plenty of life left, do yourself a favorâ¦.