WD-40. Frozen lock WD-40, which contains alcohol-based components, can be used to cleans and resist external factors. Its defrosting mechanism is quite simple when heating the lock and withdrawing things clinging to the lock, including water.
Hand sanitizer
The secret ingredient is the rubbing alcohol which lowers the freezing point of water and melts the ice inside the lock almost instantly. Apply a couple of drops of the hand sanitizer on your key and gently push the key into the lock.
Apply some WD-40
WD-40 is very effective at keeping your car door lock lubricated and frost-free. Simply spray a little into the lock and it should prevent ice and frost buildup for several days. While you're at it, you may want to spray a little into the lock of your trunk as well.
The Key Won't Turn
If your key doesn't turn in the lock, the problem may just be a poorly cut key. Test the lock with a key that was cut at a different time to be sure. If the key isn't the problem, try lubricating the lock using powdered graphite or a silicone-based lubricant.
“To unfreeze your car doors, simply fill a spray bottle with two parts vinegar to one part water. Spray liberally on the doors, taking care to avoid your car's windows. The vinegar will melt the ice. And after about a minute, you should be able to open your car door.
The simple answer is you should not use WD40 to lubricate locks. WD-40 is one of the solvent-based lubricants and does not contain any lubricant and over time can make your lock even stickier by gumming the lock up.
Gently pour lukewarm water over your car's frozen lock or door frame. Do NOT use boiling water, as the temperature difference could shatter your car window. Be sure to dry the door off after it's open to prevent re-freezing.
Preventing car door locks from freezing
The same spray you use to clean your computer will do the trick. Glycerin and Vaseline work well because of their antifreeze properties. Apply some to your key then insert it into the lock a few times. Do this regularly in winter.
This approach requires pouring a bucket of warm water over the areas around the doorframe. Doing so should melt most of the ice almost immediately. Then push on the door with your body weight a few times to break apart any remaining ice. The door should open easily at this point.
In a pinch you can rub lead from a soft pencil (which is composed of graphite) on the key, then work it back and forth in the lock. Be sure the lead in the pencil is made from true graphite.
A: Although WD-40 is magic stuff, it is not the best choice to lubricate automotive door locks and linkages. Although it does a good job of cleaning and temporary lubricating, it goes away, so it makes a good first step. Graphite has long been a popular lube choice, but we like to use bike chain lube.
First, Why do I need to lubricate my locks? If you've ever noticed your key sticking in your lock or having a hard time turning when the key is in the lock, this could be a sign that you need lubrication. If your door hinges are squeaking and making a lot of noise, this could be another sign you need lubrication.
WD-40 Specialist High Performance Silicone is your go-to silicone based lubricant spray that works well on all tools, rubber pipes, window seals, linkages, valves, locks, doors, plumbing fittings and belts.
White lithium grease is good for metal-to- metal joints like hinge and latch mechanisms, which need a clinging grease to repel water and hold up under harsh conditions. WD-40 is for light-duty lubrication and freeing up sticking or partially rusted hinges and a car door latch.
Graphite lubricant is the choice for locks because it doesn't attract dust and dirt, which can damage the locking mechanism.
Spray a generous amount of WD-40 into the keyhole of your jammed lock, and let it sit for a minute or so. Step 2: Insert and remove the key, and turn it both ways to work the solution into the lock. Turn the key the right way, and check if it works.
Do not use WD-40, WD-40 is a solvent, not a lubricant and will, in fact, remove any type of lubricant that is in the cylinder. Use a lubricant that has a silicone, graphite or Teflon base only. Make sure the lock cylinder is facing up and spray or pour the lubricant into the cylinder.