welcome to the forum

I used wd40 and it worked after about a 3 second spray into the door. not sure of what pb blaster is, but I know wd40 worked for me.

 

Kwegmann003, thank you - I will certainly try the WD-40 tomorrow and will use it on all doors including back one. I think PB Blaster is very similar to the WD-40 but most people I know always have the WD on hand. I have both but only because my mechanic at the Ford place told me he liked it better. He handled all the work on my vehicle when I lived in Mississippi and made sure it was road ready when I moved to AZ. I don't have much confidence in the mechanics here because each time they do a simple oil change, they forget to re-engage the air suspension and one time forgot to even put the oil cap back on. I'm surprised I didn't lose it driving from the dealership back home. Didn't mean to harp - thank you for letting me know that this worked for you. I certainly have nothing to lose by trying it. I'll keep you posted.

 

PB Blaster is a penetrating oil. I would use the WD40.

 

I've had the problem 5 or 6 times since I bought our Exp about 2 years ago. It has always happened after having the vehicle off road where the body gets a little more twist than on the pavement. Each time I've just had to open the tailgate and firmly shut it and the problem has been solved.

 

Every oil change spray blaster (WD 40) into your latches and you should stay trouble free.

 

Just wanted to thank everyone for their input - I used the WD-40 and the "door ajar light" is now off. Again, thanks to all of you for the tip and help.

 

PB blaster is the bom! WD-40 is great 2 but for cleaning and loosening up bolts it is great stuff.

 

My light goes on and off sometimes, but I can hear it "clicking" under the dash, just below the steering wheel. I was thinking a loose conection somewere. Do you guys think the wd-40 would be a fix for my problem?

 

I find that PB Blaster works great for loosening and de-rusting bolts. WD40 works well for lubrication purposes. In this case, I used WD40 for the door latches and it did the job

 

Just remember that WD40 isn't actually a lubricant

 

This old post saved me. My door ajar light was staying on and then my cargo and cab lights would stay on and not go off after turning off.

I read this thread and grabbed a can of Breakfree CLP and TA-DA Presto Chango my truck is fixed. I was stressing over trying to figure it out, what a nice simple solution.

 

The manufacturer would humbly disagree with you.
WD-40 Frequently Asked Questions

 

From their site...I also know a few guys who spray it on bait. they claim it works wonders to attract fish.

In 1953, a fledgling company called Rocket Chemical Company and its staff of three set out to create a line of rust-prevention solvents and degreasers for use in the aerospace industry, in a small lab in San Diego, California.

It took them 40 attempts to get the water displacing formula worked out. But they must have been really good, because the original secret formula for WD-40®—which stands for Water Displacement perfected on the 40th try—is still in use today.

Convair, an aerospace contractor, first used WD-40 to protect the outer skin of the Atlas Missile from rust and corrosion. The product actually worked so well that several employees snuck some WD-40 cans out of the plant to use at home.

A few years following WD-40's first industrial use, Rocket Chemical Company founder Norm Larsen experimented with putting WD-40 into aerosol cans, reasoning that consumers might find a use for the product at home as some of the employees had. The product made its first appearance on store shelves in San Diego in 1958.

In 1960 the company nearly doubled in size, growing to seven people, who sold an average of 45 cases per day from the trunk of their cars to hardware and sporting goods stores in the San Diego area.

In 1961 the first full truckload order for WD-40 was filled when employees came in on a Saturday to produce additional concentrate to meet the disaster needs of the victims of Hurricane Carla along the U.S. Gulf coast. WD-40 was used to recondition flood and rain damaged vehicles and equipment.



In 1969 the company was renamed after its only product,
WD-40 Company, Inc.

In 1973, WD-40 Company, Inc., went public and was listed Over-The-Counter. The stock price increased by 61% on the first day of listing.

Since that time, WD-40 has grown by leaps and bounds, and is now virtually a household name, used in numerous consumer and industrial markets such as automotive, manufacturing, sporting goods, aviation, hardware and home improvement, construction, and farming.

In 1993, WD-40 was found to be in 4 out of 5 American households (it seems everyone has a can or two) and was used by 81 percent of professionals at work. Sales had grown to more than one million cans each week.

2000+ Uses! The most interesting piece of WD-40's history is the uses for the product, now numbering in the thousands. The uses include everything from silencing squeaky hinges and removing road tar from automobiles to protecting tools from rust and removing adhesive labels. But they get a lot crazier than that.

OVER THE YEARS...

Over the years, thousands of WD-40 users have written testimonial letters to the company sharing their often unique, if sometimes just plain weird, uses for the product—many of which are shared in other parts of this website. Some of the most interesting stories include the bus driver in Asia who used WD-40 to remove a python snake which had coiled itself around the undercarriage of his bus. Or when police officers used WD-40 to remove a naked burglar trapped in an air conditioning vent.

Very few brands will ever match the popularity of WD-40. In fact, the variety and uniqueness of uses for WD-40 proved so popular that The WD-40 Book, featuring many user testimonials and the wacky humor of the Duct Tape Guys, was published in 1997. But WD-40's literary legend doesn't end there. The familiar blue and yellow can has been featured in other books ranging from The Big Damn Book of Sheer Manliness (General Publishing 1997), Polish Your Furniture With Panty Hose (Hyperion 1995), WD-40 for the Soul: The Guide to Fixing Everything (TV Books 1999), and Talking Dirty With the Queen of Clean.

In 2003, the new WD-40 Big Blast can was introduced, featuring a wide-area spray nozzle that delivers WD-40 quickly and efficiently over large areas.

In 2005, as a commitment to offering consumers the easiest, most convenient way to get the job done, WD-40 Company introduced the WD-40 Smart Straw®, which features a permanently attached straw. The Smart Straw can solved the number one complaint about WD-40 products losing the little red straw.

In 2006, WD-40 Company introduced the WD-40 No-Mess PenTM to provide millions of WD-40 users a portable, precision-application delivery system of the famous multi-purpose problem solver. The WD-40 Fan Club also reached an astonishing 100,000 members & a tribute to WD-40’s fanatical fan base around the globe.