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2021 Nissan Maxima
Key Replacement - Save vs Dealer in San Diego

No Working Key Required | We Handle It

Available
2021 Nissan Maxima Smart Key
Smart Key

Lost all your keys? Don't panic, and don't call a tow truck. Our mobile locksmith comes to your vehicle and creates a brand new key from scratch, even with zero working keys.

CA BSIS LICENSE LCO#6792
No Working Key? Easy No Dealer Tow Fresh Key On-Site
Fast Response15-25
min arrival
100+reviews
See why they skip the dealer113KSubscribers
Certified 2021 Nissan Maxima key replacement info from EZ Car Keyz Solana Beach CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • San Diego, CA
15+
Yrs Exp
Certified 2021 Nissan Maxima key replacement info from EZ Car Keyz Solana Beach CA
Key specialists
All Keys Lost?
We make new keys from scratch - no existing key needed
Fixed pricing
No Tow Required
We come to wherever the car is sitting
Fast mobile service
Emergency Service
Available 7 days a week, 6 AM to 11:30 PM
619 Special
10% OFFCODE:EZ-619-2026

🔥 Lost key panic? Save with this 🔥

No exclusions on emergency key calls
REDEEM (619) 876-1271

2021 Nissan Maxima
Key Options

Dealer-grade key for a fair, honest price

Push To Start
Most popular Nissan key typeMost Popular
2021 Nissan Maxima Smart Key KR5TXN7
FCC IDKR5TXN7Part #285E3-6HE6AButtons5BatteryCR2032Frequency434 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Metal Key
2021 Nissan Maxima Metal Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
OEM quality 2021 Nissan Maxima key fob from EZ Car Keyz Solana Beach CA
Skip the Dealer Markup
Professional key, honest rate
OEM quality 2021 Nissan Maxima key fob from EZ Car Keyz Solana Beach CA
🔧 PRO TIP
The 2021 Maxima smart key runs a CR2032, and that battery has a sneaky failure mode: it dies enough to kill the remote signal and the push-button start wake-up, but not enough to show dead on a basic tester. So owners swap the battery, it works for a week, and they think they got a bad cell. Usually they just got a battery at the edge of its life that the fob is draining faster than expected. Always test voltage under load, not just resting voltage. Also worth knowing: if the fob stops waking the push-button start but still locks and unlocks from close range, that is a classic low-battery symptom on these, not a programming issue. Do the battery first, every time.
Related services: Ignition Repair · Smart Key

No Spare? See the Difference

Emergency options side by side

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
EZ Car Keyz wins 5 out of 6
Lost all your keys? No tow truck needed
Book Service (619) 876-1271

2021 Nissan Maxima Smart Key Replacement - Fast, Affordable & Professional

He was parked at the lot near Fletcher Cove, not an airport, not a garage. Just a Tuesday afternoon in Solana Beach after a long consulting trip up the coast, back at his car, ready to be done with the week.

The fob did nothing. He pressed the door handle. Nothing. He tried the push-button start through the window like that was going to work. He'd left the emergency insert key inside the car, tucked into the laptop bag on the back seat, which was exactly as useful as leaving it at home.

He called the dealer first. Earliest opening was Thursday. Two days away. The tow company he found online quoted him a number that made no sense for a car that was physically fine, just locked. Then he found me.

I was in Solana Beach within the hour. Getting the door open without the fob is a mechanical job, and once I was in, I pulled up the key status through the diagnostic port. His fob was still registered to the car. The transponder chip inside it was still paired. The whole problem was a battery that had dropped just far enough to kill the remote signal and the push-button wake-up, but not far enough to look dead at a glance.

CR2032 swap, confirmed all five buttons, walked the door handles, verified push-button start. Done.

He'd been one battery away from driving home the whole time. I left him a spare cell for the glovebox so he doesn't end up in the same spot again.

The dealer visit never happened. He didn't need it to.

Save vs the Dealer on Your Nissan Maxima Key

Get your key for hundreds less than the dealer. Same quality, same result, better price.

Get Pricing (619) 876-1271 Text Us
BSIS Licensed Locksmith - California License LCO#6792
BSIS Licensed
CA Bureau of Security & Investigative Services
NASTF Certified Automotive Locksmith - Vehicle Security Professional
NASTF Certified
National Automotive Service Task Force
Fully Insured Locksmith - Hiscox Liability and Vehicle Damage Coverage
Fully Insured
Liability & vehicle damage coverage
Google Guaranteed Locksmith - Verified and Background Checked
Google Guaranteed
Verified & backed by Google
Also serving: Cedros Design District · Eden Gardens · Fletcher Cove · Lomas Santa Fe

Nissan Maxima Rapid Response, Done Right

Rapid response in the field

Licensed locksmith replacing 2021 Nissan Maxima key in Solana Beach CA
Smart Key | Rapid On-Site Service
2021 Nissan Maxima | San Diego
Licensed locksmith replacing 2021 Nissan Maxima key in Solana Beach CA
2021 Nissan Maxima Smart Key
2021 Nissan Maxima
Smart Key | Rescue Key
Estimated arrival time to Solana Beach
Priority ETA
Rapid Arrival
Available Today
Service location Solana Beach
Solana Beach
Help Is Close
619 Area
Same-Day Keys (619) 876-1271

Emergency Saves, Real Reviews

Emergency saves, grateful customers

R
Rick R.
Apr 2021
★★★★★

“Niv showed up, did his thing, and just like that I had two new keys for a fraction of what the dealership quoted. I have zero reservations recommending him to anyone who needs car keys replaced.”

Google Review
f
frankborja25
Dec 2019
★★★★★

“We had one broken key for our Honda Civic and one working key for our Lexus. Tim came out and cut three remote car keys at a great price. All keys worked perfectly. Professional, courteous, and highly recommended.”

Google Review
I
Incognitomlo88
Jul 2025
★★★★★

“Tim was GREAT. I honestly swear he must have had my keys made before he even showed up. The entire process was insanely fast, from the initial phone call to having the keys in my hand. No one will beat the pricing, efficiency, or outstanding service.”

Google Review
Watch real savings, real jobs62KFollowers
5-star review of 2021 Nissan Maxima key service by EZ Car Keyz Solana Beach CA
“Real savings, real reviews.”
5-star review of 2021 Nissan Maxima key service by EZ Car Keyz Solana Beach CA
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Nissan Maxima Mobile Service FAQ

Real costs, no dealer surprises

How long does the Nissan dealer actually take for a smart key replacement?
The programming itself is not the slow part. Once a tech has the right diagnostic equipment connected and the replacement fob in hand, the actual registration is roughly 15 minutes. What eats the time is everything around it: writing the repair order, queuing for a certified technician, pulling the vehicle security system data, running the enrollment sequence, then verifying all key functions before the car leaves the bay. Most Nissan dealers block out a one to two hour window for this as a standard service appointment. If they have to order the fob because it is not in stock, add however long that takes. On a 2021 Maxima, the fob is a specific part and not every dealer keeps them on the shelf. Owners on forums have reported showing up for a same-day appointment and being told the part has to come in first. Plan accordingly.
What exactly is a smart key and how does it work on the 2021 Maxima?
Why does the dealer take so long on Nissan key jobs if the programming is only 15 minutes?
I bought a replacement fob online. Can I program it myself?
My Maxima shows a key warning on the dash but the fob battery is new. What else could it be?
Questions? Call (619) 876-1271

Nissan Maxima Key Service Areas

Emergency response, full coverage

📍San Diego County
San Diego County service area map
619 LOCAL LOCKSMITH
need a key? 🔑
San DiegoChula VistaOceansideEscondidoCarlsbadEl CajonVistaSan MarcosEncinitasNational CityLa MesaSanteePowayCoronado
Licensed 2021 Nissan Maxima locksmith service area in San Diego County CA
Emergency dispatch throughout San Diego County

Emergency service available in all listed cities

Get Help Now (619) 876-1271
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Nissan Maxima car key replacement video
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2021 Nissan Maxima Key Rescue

No key, no problem. We cut and program a brand new key directly to your car's computer.

Trusted 2021 Nissan Maxima locksmith service by EZ Car Keyz Solana Beach CA
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