2017 Ford Focus key fob battery
The 2017 Ford Focus key fob takes a CR2032, a 20 × 3.2 mm 3 V lithium cell. This generation has 2 key types, so check which one you have below. Below: how to open it, what to do if it dies, and the manual we checked.
Buy CR2032 batteries CR2032 specs & equivalents
Our pick: Duracell CR2032, 2-pack on Amazon, a name-brand cell in child-resistant packaging.
Tip: change the spare key at the same time. Both cells usually age together.
Quick facts
Which key do I have?
| Key type | Version | Battery | Qty |
|---|---|---|---|
| Remote head key | Integrated key transmitter (turn-key start) | CR2032 | 1 |
| Smart key (push-button start) | Intelligent Access key (keyless entry) | CR2032 | 1 |
Confirmed in the 2017 Focus owner's manual (CR2032).
Not sure? Open the fob and read the code printed on the old battery. It is always the safest check.
Before you start
- Get a new CR2032 cell from a fresh pack.
- Work over a table or soft cloth so small parts and buttons don’t get lost.
- Note which way the old battery faces before you take it out.
- Keep loose coin cells away from children and pets. See coin battery safety.
How to replace the 2017 Ford Focus key fob battery (remote head key, Integrated key transmitter (turn-key start))
- Twist a thin coin in the slot near the key ring to pop off the battery cover
- Take out the old cell
- Fit the new CR2032 following the + symbol inside the housing and press it fully down
- Refit the cover and test the buttons
How to replace the 2017 Ford Focus key fob battery (smart key, Intelligent Access key (keyless entry))
- Release and remove the metal key blade (press the side buttons or slide the release, depending on key style)
- Use a coin or thin screwdriver at the seam to separate the case or lift off the battery cover
- Ease out the old cell without touching the circuit board
- Fit the new CR2032 with the + side facing down
- Press the case back together, refit the key blade and test the buttons
The 2017 Focus owner's manual lists two Intelligent Access key styles (keyless entry, and keyless entry with remote start); both use one CR2032 fitted + side down.
After you change the battery
- Press lock and unlock from a few metres away. The car should react on the first press.
- On push-button start cars, start the engine once with the fob in your pocket.
- If nothing happens, re-open the fob and check the battery direction and contacts. More fixes: key fob not working after a battery change.
About the CR2032 battery
CR2032 is a 20 mm × 3.2 mm, 3 V lithium cell with a typical capacity of about 225 mAh. The same size is sold as DL2032, ECR2032, KCR2032, 5004LC. A CR2012 or CR2016 or CR2025 has the same diameter but is thinner, so it can fit loosely and runs down sooner. Stick with CR2032.
Photos from Ford Focus owners
No owner photos yet for this generation.
Other vehicles that use a CR2032
2021–2024 Ford Escape2024–2025 Hyundai Elantra2021–2023 Hyundai Elantra2022–2023 Hyundai Kona2020–2022 Hyundai Palisade2021–2023 Hyundai Santa Fe2021–2023 Hyundai Sonata2022–2024 Hyundai Tucson2021 Mazda CX-32024–2026 Mazda CX-302020–2023 Mazda CX-302026 Mazda CX-5
Questions
What battery does the 2017 Ford Focus key fob use?
Integrated key transmitter (turn-key start): 1 × CR2032 (remote head key); Intelligent Access key (keyless entry): 1 × CR2032 (smart key).
How many batteries does the 2017 Ford Focus key fob need?
Integrated key transmitter (turn-key start): 1; Intelligent Access key (keyless entry): 1.
Can I use a CR2012 or CR2016 or CR2025 instead of a CR2032?
It has the same 20 mm diameter but is thinner, so it can lose contact and runs down sooner. Use a CR2032.
Which battery names are the same as CR2032?
DL2032, ECR2032, KCR2032, 5004LC are the same size as CR2032.
Do I need to reprogram the key after changing the battery?
Most key fobs keep their pairing when the battery is changed. If the fob stops working, check the battery direction and contacts first; our troubleshooting guide covers the rest.
Related guides
Fob not working after a battery change?Signs the fob battery is dyingStarting a car with a dead fobCR2032 vs CR2025 vs CR2016