A flickering check engine light with a rough idle usually points to an active engine misfire. Here’s what to check first and whether you can keep driving your Lexus LS.
If you own a Lexus LS and the check engine light is flickering while the engine idles rough, you're right to be concerned. A flickering CEL is different from a steady one — it typically means there's a misfire happening right now, and that raw fuel is being dumped into your catalytic converters. Ignoring it can turn a few hundred-dollar repair into a multi-thousand-dollar one. Let's walk through the most likely culprits and what you should check first.
