Question 1

How much does a 2019 Lexus NX smart key replacement cost?

Accepted Answer

Call us for current pricing -- we don't post flat rates here because the job scope can shift depending on whether you have a working key or are all-keys-lost. What I can tell you is that we come to you in Solana Beach and the Lomas Santa Fe area, the price we quote covers everything, and it lands well below what the Lexus dealer charges once you factor in their parts counter cost, separate programming labor, and the tow you'd need if the car isn't driveable. One price, on site, everything included.

Question 2

Is a mobile locksmith actually cheaper than going to the Lexus dealer for a smart key?

Accepted Answer

On Lexus smart keys, the gap is real. Dealers typically split the bill into parts and labor: the fob from the parts counter, a separate programming fee, and sometimes a diagnostic charge on top. Owners in forums consistently report the total coming in well above what a qualified mobile locksmith charges for the same outcome. Add a tow if the car isn't running, and the dealer route gets expensive fast. We use professional-grade diagnostic equipment and properly coded fobs without the dealership overhead. The savings are meaningful enough that people call us even for a spare when the car is still driveable.

Question 3

Does your price include cutting and programming, or are those separate?

Accepted Answer

Everything is one price. The fob itself, transponder enrollment, syncing the remote functions, cutting the emergency blade insert to your vehicle, and testing before I leave. Nothing gets added at the end. Lexus dealers have a habit of quoting the fob at the parts counter and then surfacing a programming fee separately when you're already there. That doesn't happen with us.

Question 4

My 2019 NX shows a key warning on the dash but the fob battery is brand new. What's going on?

Accepted Answer

This comes up more than people expect. A fresh battery that isn't seated fully flat against both contacts will read exactly like a dead one. The CR1632 is a thin cell and the contacts in the fob are easy to slightly deform if the housing was pried open instead of popped at the correct point. Open the fob, check that the battery is sitting flush and both contacts are making clean contact, then retest.

If the battery and contacts look fine, the next thing to check is whether the warning is specific to one door handle or shows up everywhere including the start button. An intermittent read at one handle but normal behavior at the start button usually points to that door's handle sensor, not the fob. If the start button itself is throwing a key-not-detected warning with a fob you know is good, that's a different conversation -- bring me in and I'll diagnose it on site.

Question 5

I bought a replacement fob online for my 2019 NX. Can I program it myself?

Accepted Answer

No. The 2019 NX smart key requires professional diagnostic equipment to enroll a new fob. There is no button sequence, no ignition-turn trick, no onboard self-programming procedure for this system. The fob you bought online is just hardware until someone with the right tools pairs it to your vehicle's immobilizer. That part of the job still needs a locksmith or dealer. If you already have the fob, bring it -- I can program it as long as it's the correct fob for your vehicle and it hasn't been previously locked to another car's system.

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