Question 1

Are you licensed and insured to work on Lincoln vehicles?

Accepted Answer

Yes. EZ Car Keyz is a California BSIS licensed locksmith company (LCO#6792), fully insured, and holds NASTF Vehicle Security Professional credentials. That last part matters for this vehicle. The 2012 MKS uses a smart key system that requires dedicated programming equipment and access to vehicle security procedures. Some general locksmiths will show up, realize they cannot do the job, and either leave or try to talk you into something simpler. We do this work regularly and arrive with the right tools loaded in the van. You can verify the BSIS license directly through the California Bureau of Security and Investigative Services website.

Question 2

How do I know you are not a scam locksmith?

Accepted Answer

Scam locksmiths are a real and documented problem in California, and Lincoln owners are a specific target because of the badge. The pattern is consistent: low quote on the phone, arrival in an unmarked car, then a claim that your vehicle needs special luxury-brand equipment and the price doubles.

EZ Car Keyz operates under a real business name with a verifiable BSIS license number you can look up. We show up in a marked vehicle. We give you a firm price on the phone and that price does not change when we see the Lincoln emblem on the trunk. We also have a public presence on YouTube and TikTok with well over 100,000 followers where you can watch us do this exact type of work. That kind of visibility is not something a scam operation maintains.

Question 3

Will a replacement smart key work exactly like the original?

Accepted Answer

It should, and we test every function before we leave. For the 2012 MKS that means confirming the door handle detection, the lock and unlock buttons, the start function with the fob present, and the emergency insert blade in the cylinder. The reason we test everything on site is that a key can appear to program correctly and still have one function that does not respond. Owners on Lincoln forums have posted about aftermarket fobs where proximity detection worked only when the fob was held directly against the handle rather than carried normally in a pocket. That kind of partial failure is not obvious until you actually walk away from the car and test it the way you would in real use. We do not hand you the key and drive away. We confirm everything works the way the original did.

Question 4

I bought a replacement fob online for my 2012 MKS. Can you just program it, or is there a problem with aftermarket fobs?

Accepted Answer

This comes up a lot. The short answer is: it depends on the fob, and there is real risk buying one before you know what you have.

The 2012 MKS uses a smart key with a specific radio frequency and transponder configuration that has to match what the vehicle expects. Aftermarket fobs vary in quality. Some program without issues. Others will pair for remote lock and unlock but fail on the immobilizer side, meaning the car locks and unlocks but will not start. A smaller group will not register at all.

If you already bought one, bring it. I will tell you right away whether the hardware looks correct before I charge you anything to attempt programming. If it does not work, I carry replacement fobs and can do the whole job in one visit. Better to know upfront than to find out after the attempt.

Question 5

My 2012 MKS starts fine but the door handle touch unlock stopped working. Is this a key or fob problem?

Accepted Answer

Probably not the fob. If the car starts, the immobilizer is reading the key correctly. Touch unlock on the door handle is handled by a capacitive sensor in the handle itself, and these are a known weak point on this generation. Dirt, moisture, and general wear affect how well the sensor reads your touch. Wipe the handle area down and retest first. If the problem is isolated to one door handle and everything else on the fob works, the fob is almost certainly not the issue. That is a door-side diagnosis, not a key replacement job.

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