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2012 Infiniti M56
Key Replacement - Save vs Dealer in San Diego

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2012 Infiniti M56 Smart Key
Smart Key

Not all locksmiths are created equal. EZ Car Keyz is BBB A+ rated, fully licensed and insured, and trusted by thousands of customers across the area. Your vehicle is in good hands.

CA BSIS LICENSE LCO#6792
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min arrival
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2012 Infiniti M56 key replacement cost - EZ Car Keyz Del Mar CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • San Diego, CA
15+
Yrs Exp
2012 Infiniti M56 key replacement cost - EZ Car Keyz Del Mar CA
Key specialists
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2012 Infiniti M56
Key Options

Dealer-grade key for a fair, honest price

Push To Start
Most popular Infiniti key typeMost Popular
2012 Infiniti M56 Smart Key CWTWB1U787
FCC IDCWTWB1U787Part #285E3-1LP0CButtons4BatteryCR2032Frequency433 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Emergency Key
2012 Infiniti M56 Emergency Key
FCC IDPart #NI06ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Metal Key
2012 Infiniti M56 Metal Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Budget 2012 Infiniti M56 key fob options from EZ Car Keyz Del Mar CA
Skip the Dealer Markup
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Budget 2012 Infiniti M56 key fob options from EZ Car Keyz Del Mar CA
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The 2012 Infiniti M56 uses a smart key system where the fob communicates passively with the vehicle antennas around the door handles and center console area. The fob carries a CR2032, which is one of the more common cells, but owners on Infiniti forums consistently report a weak battery causing symptoms that look like something much worse: the push-button start refusing to recognize the fob even when you're sitting in the seat, the door handles not waking up, or a key-not-detected warning that cycles on and off. Before you conclude the fob is dead or the immobilizer is acting up, pull the fob apart carefully and look at the battery contacts. They oxidize. A fresh CR2032 seated on clean contacts fixes more of these calls than it should. Also worth knowing: if the fob battery is totally dead, the M56 has a backup spot near the start button where you can hold the fob to get a one-time ignition authorization. Most owners have never heard of it until they need it at midnight.
Related services: Ignition Repair · Smart Key

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EZ Car Keyz
EZ Car Keyz
Dealership
Average Cost
✓ $$
✕ $$$$
Location
✓ We come to you
✕ You drive there
Wait Time
✓ 20-45 min
✕ 2-5 days
Same-Day
✓ Yes
✕ Rarely
All Keys Lost
✓ No problem
✕ Tow required
OEM Quality
✓ Yes
✓ Yes
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2012 Infiniti M56 Smart Key Replacement - Fast, Affordable & Professional

I got a call from a woman staying at a residence in Del Mar Heights. Traveling auditor, working an assignment, one key to her name. She walked out to her M56 in the evening and the door handles weren't waking up. She got in using the mechanical key insert, sat down, held the fob to the start button area like the manual says, and the car started. She figured it was the battery. Swapped in a new CR2032 at the hotel gift shop and then it got worse, not better.

By the time she called me, the fob was not being detected at all, even from inside the vehicle. The hotel front desk had given her the dealer number. Dealer told her to tow it in the next afternoon, and the wait for parts could run a few days after that. She had a morning meeting she couldn't miss.

I drove out to the lot that night with my equipment. Popped the fob open and the new battery from the gift shop was seated off-center. The contact on one side wasn't making clean contact. Reseated it, cleaned both contacts, and the fob came back to life for the lock and unlock functions. But the passive entry, where the door handles wake up as you approach, was still inconsistent.

Ran a quick scan. There was stored fault data pointing to one of the door handle antenna circuits, not the fob, not the immobilizer. The fob itself was fine. She didn't need a new key at all.

I walked her through every function before I left. All four buttons, both door handles, push-start from inside, the whole check. It was all working by the time I packed up. She made her meeting. The dealer tow-and-wait scenario never happened.

Save vs the Dealer on Your Infiniti M56 Key

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BSIS Licensed Locksmith - California License LCO#6792
BSIS Licensed
CA Bureau of Security & Investigative Services
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Liability & vehicle damage coverage
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Also serving: Carmel Valley · Del Mar Heights · Del Mar Village · Torrey Pines

Infiniti M56 Rapid Response, Done Right

Rapid response in the field

Affordable 2012 Infiniti M56 key replacement by EZ Car Keyz in Del Mar CA
Smart Key | Rapid On-Site Service
2012 Infiniti M56 | San Diego
Affordable 2012 Infiniti M56 key replacement by EZ Car Keyz in Del Mar CA
2012 Infiniti M56 Smart Key
2012 Infiniti M56
Smart Key | Pro Grade Service
Estimated arrival time to Del Mar
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Service location Del Mar
Del Mar
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619 Area
Same-Day Keys (619) 876-1271

Trusted by 100+ Infiniti Drivers

Rated 5.0 on Google and Yelp

J
Jennifer R.
Feb 2024
★★★★★

“The dealership quoted me $600 for a new Honda key. EZ Car Keyz did it for $225, same day, cut and programmed at my house. Works perfectly. Everyone should know this is an option.”

Yelp Review
E
Erick
Nov 2025
★★★★★

“A+ service at an even better price. Tim was a lifesaver. I lost my original and only key for my Audi and he was willing to come to my location at 8pm the same day. He worked fast, communicated clearly, and made sure everything worked before leaving.”

Google Review
H
Hunter P.
Jul 2025
★★★★★

“I called over 40 locksmiths trying to get a key made for my Audi A6 and nobody could do it. Tim made it easy, fast, and affordable. He showed up with a smile and got the job done without any stress. Absolute wizard with keys.”

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Customer review showing savings on 2012 Infiniti M56 key by EZ Car Keyz Del Mar CA
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Customer review showing savings on 2012 Infiniti M56 key by EZ Car Keyz Del Mar CA
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Infiniti M56 Mobile Service FAQ

Real costs, no dealer surprises

Do I have to go to the Infiniti dealer to get a replacement smart key for my 2012 M56?
No. A mobile locksmith who carries the right diagnostic tooling for Infiniti vehicles can cut and program a replacement smart key at your location. The 2012 M56 smart key requires programming through the OBD port to register the new fob with the vehicle's immobilizer, and that's a standard job for a properly equipped locksmith. You don't need to tow the car anywhere. The dealer assumption comes up constantly with luxury brands. People think Infiniti or Nissan proprietary security means only a dealer can touch it. What it actually means is that generic or low-end key tools won't do the job. The right professional equipment handles it the same way, just at your driveway or parking lot instead of a service bay.
What exactly is a smart key and how does the 2012 M56 use it?
How long does the dealer usually take for an Infiniti M56 key replacement?
My 2012 M56 shows a key-not-detected warning but the fob battery is fine. What causes that?
I bought a replacement fob online for my M56. Can I program it myself?
Questions? Call (619) 876-1271

Infiniti M56 Key Service Areas

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Affordable 2012 Infiniti M56 locksmith service area in San Diego County CA
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Professional 2012 Infiniti M56 Key Replacement

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Best price 2012 Infiniti M56 car key replacement by EZ Car Keyz Del Mar CA
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