Keymall Hyundai Sonata replacement key fob 2018-2019 — 4-button, Texas Crypto 8A, CR2032

Keymall's replacement proximity key fob duplicates the factory keyless entry functions for Hyundai Sonata 2018–2019 and ships ready with battery, chip and uncut emergency key for professional programming.

This aftermarket Keymall remote is engineered to match the original Sonata 2018–2019 smart key features: 4 buttons (lock, unlock, trunk, panic), a CR2032 battery, a Texas Crypto 8A chip with 128-bit AES security, and 434MHz frequency. It fits the common part numbers 95440-C1500 / 95440-C1500NNA / 95440-C2500 and carries FCC ID CQOFD00120. The unit is supplied without brand emblems on the back and requires a locksmith or dealer to program and cut the emergency blade.

How do I confirm this remote fits my Sonata?

Compare the physical key and the technical identifiers on your original remote before ordering. Similar-looking remotes exist, so matching part numbers, FCC ID, button layout, blade type and frequency will prevent compatibility issues.

• Check FCC ID: CQOFD00120
• Verify part numbers: 95440-C1500 / 95440-C1500NNA / 95440-C2500
• Confirm button count and layout: Lock, Unlock, Trunk, Panic
• Ensure frequency matches: 434MHz
• Compare emergency key blanks: 81996-3Z020 or 81999-2S040

What must be done to get the remote working with my car?

This replacement fob requires professional programming and the emergency key must be cut to match your vehicle. Keymall supplies the complete remote with battery, chip and uncut blade, but programming and cutting are separate services offered by locksmiths or dealerships.

• Take the remote and your vehicle to an automotive locksmith or dealer
• Have the Texas Crypto 8A chip programmed to your car
• Get the emergency key blade cut to your ignition/door
• Test lock, unlock, trunk and panic functions before leaving

What features and hardware are included in the package?

The package contains one complete, new aftermarket remote with the internal electronics already installed. It arrives with a CR2032 battery and an uncut emergency key blank so you can finish the setup with local services.

• 1 x Keymall key fob with installed battery and circuit board
• Built-in Texas Crypto 8A 128-bit AES chip
• Uncut emergency key blank (compatible blanks noted)
• No logo or part number printed on the back (aftermarket item)

Are there limitations or precautions I should know?

Because this is an aftermarket replacement, aesthetics and markings differ from OEM units and the remote will not include Hyundai branding. Also, not every Sonata of the same year uses the same remote—verify compatibility before purchase and confirm that your vehicle accepts aftermarket programming.

• Aftermarket remote — no factory logo on reverse
• Compatibility varies; double-check original remote parameters
• Programming and blade cutting are NOT included in the sale
• Contact a locksmith to confirm your vehicle accepts this FCC ID/chip

Who is this for: This Keymall replacement key fob is aimed at Hyundai Sonata 2018–2019 owners who need a full-function aftermarket proximity remote (lock, unlock, trunk, panic) with a secure Texas Crypto chip and battery included, and who are prepared to have a professional locksmith or dealer program and cut the emergency key. It’s ideal for drivers replacing a lost or damaged factory fob or keeping a programmed spare on hand.