Put 1 Glass of Salt in a Car: Surprising Hack Every Driver Needs to Know



You’ve probably heard odd car “hacks” before—but this one actually has practical, science-backed uses. While you shouldn’t just toss a glass of table salt into your car and forget it, keeping a container of salt in your vehicle can be a surprisingly smart move—especially in winter or emergency situations.

Here’s what it really does (and what it doesn’t).


❄️ 1. De-Ice Frozen Door Locks & Windows (Emergency Fix)

  • How it works: Salt lowers the freezing point of water.
  • What to do:
    • Mix 1 part salt + 2 parts warm water in a spray bottle.
    • Spray on frozen locks or windows to melt ice quickly.
  • ⚠️ Don’t pour dry salt directly on paint or metal—it can cause corrosion over time.

🛞 2. Temporary Traction Aid for Stuck Tires

  • How it works: While sand or cat litter is better, salt can add slight grit on icy patches.
  • What to do:
    • Sprinkle salt in front of or behind stuck tires to help melt ice and improve grip.
  • ⚠️ Not ideal long-term—salt melts ice but leaves a wet surface; use only if nothing else is available.

💧 3. Absorb Moisture & Reduce Fogging (Desiccant Trick)