Things Aren't Always What They Seem
July 25, 2021
If you drive, you know at some point, something's going to go wrong with your vehicle. And sometimes, it's pretty easy to figure out what's wrong, like a flat tire. But sometimes your vehicle's symptoms can be really puzzling.
One driver in Michigan was heading to work on a hot July day and noticed when he pressed the accelerator, sometimes it wouldn't do anything. He also noticed his cruise control wouldn't work and his traction control light was constantly on, very unusual.
He was trying to figure it out, but none of it made any sense. His cruise control had always worked perfectly, his traction light never had gone on before and there was never any issue pressing on the accelerator.
It was time to take his car in for a professional diagnosis, and boy, was he surprised that it was a freak accident he'd had the previous WINTER that was the root of his problems. You see, in January, his car had slipped on ice when he was in reverse and had gently tapped a tree. That caused a tiny crack in his rear stoplight.
That crack had gone unnoticed until that July day. Turns out a summer rain allowed water to seep into the taillight casing, so this time when he drove to work, there was enough moisture inside it to cause his stop light to stick on.
When the stop light is on, the car's computer is programmed to act as if the driver is pressing the brakes. It also disables the cruise, accelerator and cruise control when the brakes are on, producing all of the symptoms. Replacing the stop lamp switch fixed everything.
So, while some things that go wrong with your vehicle are pretty obvious, many seemingly defy all logic. That's when a trained technician can scope things out, replace the right part and get you going again.
Need Service?
More articles from Sterling Tire & Auto

It's (Not) Complicated (Engine Air Filter)
April 15, 2026
While many components of your vehicle are complex and composed of lots of mechanical and electrical parts, there's one that isn't complicated but still important. It's your engine air filter. (And, we should point out, the engine air filter isn't to be confused with the cabin air filter. The ca... More

The Little Valve that Could (PCV Valve Replacement)
April 14, 2026
It's easy to get letters like PVC and PCV mixed up. PVC is a plastic that's used in a lot of things, especially plumbing pipes. And PCV is a valve that helps your engine burn off excess fumes rather than having them pollute our atmosphere. PCV stands for positive crankcase ventilation. When ... More

See the Light (Bulb Replacement)
March 29, 2026
When you notice one of your headlights has gone out, its important for the safe operation of your vehicle to get it changed and working again. Not only is replacing a headlight important for your ability to see in the dark, but its also vital that it be lighting your way and aimed correctly so o... More
