Hyundai Sonata vs Nissan Altima: key replacement compared
Shopping the Hyundai Sonata against the Nissan Altima? They are a common mid-size sedans cross-shop in the Statesboro area, and the key replacement story is different enough to matter. If you are weighing which is simpler or quicker to get a replacement key for, here is the head-to-head: key technology by model year, how a lost-key job actually runs on each, and the field quirks we see most. Call (912) 209-6131 for same-day mobile service on either one.
Hyundai Sonata vs Nissan Altima at a glance
| Hyundai Sonata | Nissan Altima | |
|---|---|---|
| Model years covered | 2006–2026 | 2002–2026 |
| Earliest key type | Transponder | Transponder |
| Newest key type | Proximity | Proximity |
| Lost-all-keys handling | Typically on-site via OBD-II | Typically on-site via OBD-II |
| Spare from a working key | On-site, same visit | On-site, same visit |
Key types by year, side by side
Both vehicles changed key technology over their runs, so the right blank, chip, and programmer depend entirely on your model year. Here is what each one uses:
Hyundai Sonata
HY20 blade, PCF7936 transponder chip.
Push-to-start option (FCC: TQ8-FOB-4F08).
Standard push-to-start. FCC: TQ8-FOB-4F18.
Updated proximity fob. FCC: TQ8-FOB-4F27.
Nissan Altima
NSN14 blade, PCF7936 transponder chip (ID46).
NSN14 blade, PCF7936 chip.
Push-to-start option with proximity key (FCC: KR5S180144014 or 285E3-9HP4B).
Standard push-to-start. FCC: KR5TXN4.
Which is simpler or quicker to key?
Neither the Hyundai Sonata nor the Nissan Altima typically needs a dealer for routine key work. Both are mobile, on-site jobs: a spare comes from a working key in a single visit, and a lost-all-keys situation means reading the immobilizer PIN through the OBD-II port before enrolling the new key.
The quirk that trips people up on each
- Year-specific fobs. The Sonata changed proximity fobs almost every generation, so a 4F08, 4F18, and 4F27 are not interchangeable despite looking similar.
- Two 2013-2018 fobs. Those Altimas shipped as KR5S180144014 or 285E3-9HP4B, so the exact proximity part must be matched before programming or it won't pair.
How a key job runs on either one
The path works the same way on both. The simplest job on either vehicle is a planned spare made while you still have a working key, because that key acts as the authentication seed and the work is short. A lost-all-keys situation takes more steps on either one, since the programmer has to read the immobilizer PIN before it can enroll a new key. We confirm the exact part by VIN before we dispatch, so the right blank, chip, and programmer are on the truck when we arrive.
Get a replacement key in Statesboro, GA
We are a mobile automotive locksmith and we come to you anywhere in Statesboro, Bulloch County, and southeast Georgia, no tow and no dealership wait, for both the Hyundai Sonata and the Nissan Altima. Call (912) 209-6131.
Compare the full guides
- Hyundai Sonata key replacement guide, all years and key types
- Nissan Altima key replacement guide, all years and key types
- All Hyundai car keys
- All Nissan car keys
Frequently asked: Hyundai Sonata vs Nissan Altima keys
Is the Hyundai Sonata or the Nissan Altima simpler to make a key for?
They are comparable. A spare made from a working key is the simplest path on either vehicle; a lost-all-keys situation takes more steps because we read the immobilizer PIN first. We confirm the exact path by VIN before dispatching.
Can you make a key for both on-site in Statesboro?
Yes. Both the Hyundai Sonata and the Nissan Altima are handled by our mobile unit at your location for the large majority of year ranges. Any exception that needs dealer coordination is flagged on the phone when we confirm your VIN, so the work is set up correctly before we arrive.
Do I need the original key to get a replacement?
No. With a working key we make a spare in a single visit because the original acts as the authentication seed. With no key at all, we read the immobilizer PIN and build a key from your VIN. Both vehicles support both paths.