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Fast Response Locksmith

2020 Nissan Altima
Key Replacement - Save vs Dealer in San Diego

No Working Key Required | We Handle It

Available
2020 Nissan Altima Smart Key
Smart Key

All keys lost is our specialty. While the dealer would require a tow and days of waiting, we arrive at your location and have a new key cut and programmed on the spot.

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
Verified locksmith 2020 Nissan Altima key specs from EZ Car Keyz Poway CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • San Diego, CA
15+
Yrs Exp
Verified locksmith 2020 Nissan Altima key specs from EZ Car Keyz Poway 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

2020 Nissan Altima
Key Options

Dealer-grade key for a fair, honest price

Push To Start
Most popular Nissan key typeMost Popular
2020 Nissan Altima Smart Key KR5TXN4
FCC IDKR5TXN4Part #285E3-6SA7BButtons5BatteryCR2032Frequency434 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Push To Start
2020 Nissan Altima Smart Key KR5TXN1
FCC IDKR5TXN1Part #285E3-5NA3AButtons4BatteryCR2032Frequency433 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Emergency Key
2020 Nissan Altima Emergency Key
FCC IDPart #NI06ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Metal Key
2020 Nissan Altima Metal Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Dealer grade 2020 Nissan Altima key fob from EZ Car Keyz Poway CA
Skip the Dealer Markup
Professional key, honest rate
Dealer grade 2020 Nissan Altima key fob from EZ Car Keyz Poway CA
🔧 PRO TIP
The 2020 Altima Intelligent Key is not cloneable. The transponder chip in this generation uses an encrypted pairing protocol, so you cannot copy an existing key the way you could with older Nissan blanks. Every new fob has to start as an unprogrammed virgin unit and get registered fresh to the car through the OBD port with diagnostic equipment. No ignition-turn sequence, no button trick. The other thing that catches people off guard: when the fob battery dies completely on these, the backup start method involves holding the fob directly to the start button. If the internal antenna contact in the fob is corroded or the fob housing has cracked and shifted the board slightly, that backup procedure will fail even with a brand new CR2032 seated correctly. Dead battery plus a compromised antenna looks identical to a failed key from the outside.
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
All keys lost is no problem for us
Book Service (619) 876-1271

2020 Nissan Altima Smart Key Replacement - Fast, Affordable & Professional

It was July, a parking lot off Community Road in South Poway, and the guy had groceries in the trunk. Frozen stuff. He figured he had maybe 30 minutes before it turned into a warm, expensive mess.

His Intelligent Key had gone completely dark inside the store. No lock, no unlock, no response at all. He tried the backup start hold against the button and nothing happened. He called the dealer first. Next available appointment was the following morning. Then he called me.

I was 15 minutes out.

When I got there he was standing next to the car, watching it like it might change its mind. I got the door open mechanically and took a look at the fob. The CR2032 was fully dead, which explained everything on the surface. But when I seated a fresh cell and ran the backup start test again, still nothing. That told me the battery was not the whole story.

I opened the fob. The internal antenna contact had visible corrosion, the kind that builds up slowly and then one day just kills the near-field signal entirely. The backup start relies on that short-range antenna, so a corroded contact will fail that test every time regardless of battery condition.

I replaced the fob with a fresh unit, programmed it through the OBD port, and walked every function: door lock, unlock, trunk release, remote start range, and the backup start hold against the button. Everything confirmed.

From his first phone call to the engine running was 38 minutes. The dealer would have been the next morning. The frozen groceries made it home.

Save vs the Dealer on Your Nissan Altima 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: Garden Road Area · Lake Poway Area · Old Poway · Poway Business Park

Nissan Altima Rapid Response, Done Right

Rapid response in the field

Insured mobile locksmith working on 2020 Nissan Altima in Poway CA
Smart Key | Rapid On-Site Service
2020 Nissan Altima | San Diego
Insured mobile locksmith working on 2020 Nissan Altima in Poway CA
2020 Nissan Altima Smart Key
2020 Nissan Altima
Smart Key | Rescue Key
Estimated arrival time to Poway
Priority ETA
Rapid Arrival
Available Today
Service location Poway
Poway
Help Is Close
619 Area
Same-Day Keys (619) 876-1271

Emergency Saves, Real Reviews

Emergency saves, grateful customers

Z
Zebadiah A.
Oct 2025
★★★★★

“Super fast service. About 20 minutes from the call he was already there. He had an authentic replacement on hand and made a spare key for my 2017 Nissan Rogue in about 15 minutes. Great prices, friendly, and very professional.”

Google Review
D
Diya M.
Jan 2025
★★★★★

“Fast, affordable, and a great price. Marco did an amazing job and made a key for our Nissan Kicks quickly and professionally. Everything worked perfectly.”

Google Review
E
Edelson E.
Oct 2025
★★★★★

“I got locked out of my vehicle and also lost my key. Marco came out, made a new key for my Toyota, and got me back on the road. He was professional, friendly, and clearly knows what he is doing.”

Google Review
Watch real savings, real jobs62KFollowers
Google Guaranteed locksmith review for 2020 Nissan Altima - EZ Car Keyz Poway CA
“Real savings, real reviews.”
Google Guaranteed locksmith review for 2020 Nissan Altima - EZ Car Keyz Poway CA
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Nissan Altima Mobile Service FAQ

Real costs, no dealer surprises

Are you licensed and insured to work on Nissan vehicles in Poway?
Yes. EZ Car Keyz holds an active California BSIS locksmith license and carries full liability insurance. For a 2020 Altima specifically, programming a replacement Intelligent Key requires registering the new fob to the vehicle's immobilizer through the OBD port using professional diagnostic equipment. I have the tools and the subscriptions to do that. Not every mobile locksmith does, and some will tell you flat out that only the dealer can handle late-model Nissan programming because they are not equipped for it. If a locksmith cannot describe how they actually register a fob to your specific car before they arrive, that is worth paying attention to.
How do I spot a scam locksmith before I get stuck paying way too much?
Will the replacement key work exactly like my original factory fob?
I bought a replacement fob online. Can you just program it to my 2020 Altima?
My 2020 Altima shows a key-not-detected warning but the fob battery is fine. What is actually going on?
Questions? Call (619) 876-1271

Nissan Altima 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
Guaranteed 2020 Nissan Altima 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 Altima car key replacement video
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2020 Nissan Altima Key Rescue

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

Rated number one 2020 Nissan Altima locksmith - EZ Car Keyz Poway CA
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