These instructions apply to the Skoda Scala Mk1 (NW1) 2019-Present.
For other models, please choose your vehicle here.
If the remote for your Škoda Scala (2019–present, VAG A0/MQB-A0 platform) has started working only from arm’s length, needs a second or third press, or has gone dead altogether, the coin cell inside the key is almost certainly flat. Every Scala ships with the same one-piece folding (“flip”) key — the metal bit swings out at the press of a button — whether the car has the standard remote-locking or the higher-spec KESSY keyless entry. The good news is that the two share an identical housing and take the same battery, so there is only one procedure to learn. Here is exactly which cell to buy, how to pop the cover without marking the plastic, and why cutting a brand-new key is the one job you can’t finish at home.
How to Tell the Fob Battery Is Dying
- Shrinking range. You have to stand right next to the car — or almost touch the door handle with the key — before it locks or unlocks. This gradual loss of range is usually the first sign.
- A “key battery low” message. The Scala shows a low key-battery warning in the instrument display, most reliably when you switch the ignition on. On KESSY cars, keyless unlocking and push-button start can become intermittent before the message even appears.
- Sluggish or hit-and-miss buttons. If lock/unlock works only some of the time — and worse on a cold morning — that is a tired cell struggling to deliver the brief burst of current the transmitter needs.
- KESSY stops recognising the key. With keyless entry, a weak cell means the door handle sensor no longer “sees” the key in your pocket, so you fall back to pressing the button.
A CR2032 in a Scala key typically lasts two to four years. KESSY keys can run down a little faster because the fob wakes up every time it is near the car. If yours is a few years old and showing any of the above, fit a fresh cell before you suspect the receiver or immobiliser.
The Battery You Need
The Scala key uses a single CR2032 3-volt lithium coin cell — the most common fob battery there is, sold in any supermarket, pharmacy or hardware shop. This is the same cell Škoda uses across the related Fabia, Kamiq and Octavia keys. Buy a good-quality branded cell: cheap ones can read as “new” yet sag under load and give poor range from day one. Do not substitute a CR2025 — it looks almost identical but is thinner, so it can sit loose against the contacts and drop out.
How to Change the Battery
The same steps apply to both the standard remote and the KESSY keyless key — the housing is the same, only the electronics inside differ.
- Fold out the metal key bit. Press the small release button on the fob so the blade swings out and locks open. This exposes the seam and the marked notch on the back cover.
- Release the battery cover. With the blade out, ease the back cover off using your thumbnail, or insert a small flat-head screwdriver into the marked point on the seam and gently lever. The cover is held by plastic clips, not a screw, so it lifts away with light pressure — no force needed.
- Note how the old cell sits, then lift it out. On the Scala key the CR2032 sits with its positive (+) face upward, toward the cover you just removed. Take a quick photo first if you are unsure — matching the original orientation is the one detail that matters.
- Drop in the new cell the same way round, pressing it fully under its retaining clip so it sits flat against the contacts. Handle it by the edges; skin oil on the faces can cause a poor connection.
- Clip the cover back on until you hear it click, then fold the metal blade back in. Test lock and unlock, and on KESSY cars check the door-handle sensors and push-button start respond again.
⚠️ Get the polarity right. A coin cell fitted upside-down won’t power the transmitter and can slowly discharge against the contacts, so always copy the orientation of the cell you removed — positive side up on this key.
Check It Worked
Stand back a few metres and lock, then unlock, the car. Full range should return straight away. Any “key battery low” message clears once the car next reads a healthy key — sometimes instantly, sometimes after a drive cycle or two. On a KESSY Scala, confirm that walk-up handle sensing and keyless start are both back to normal, not just the buttons.
If a Fresh Cell Doesn’t Fix It
- Re-check polarity and seating. A cell in upside-down, or not pressed fully under its clip, is by far the most common reason a “new” battery seems dead. Positive side faces up.
- Wipe the contacts. A film of finger grease or light corrosion on the terminals is enough to cause dropouts — clean them with a dry cloth or a cotton bud.
- Confirm the cell itself is good. A CR2032 straight out of a bargain multipack can be flat. Try a fresh branded one before assuming the fob has failed.
- Warning still showing? It can take a couple of key reads to clear. If the car itself is slow to wake or the message keeps returning, a weak 12 V car battery can occasionally mimic key faults — worth ruling out if the Scala has been standing.
New Key or Spare — Why It’s a Dealer Job
Swapping the coin cell leaves the fob’s coding untouched, so there is no reprogramming after a battery change — the key works immediately. Adding a spare or replacing a lost key is a different matter: every Scala key is tied to the car’s immobiliser, and a blank has to be cut to the VIN and coded to the vehicle with Škoda diagnostic equipment. That means a dealer or a properly equipped auto-locksmith, not a DIY job. The practical takeaway: keep the coin cell in your spare key fresh too, so you are never down to a single working key when one battery dies.
Frequently Asked Questions
What battery does a Škoda Scala key take?
A single CR2032 3-volt lithium coin cell. The same cell fits both the standard remote key and the KESSY keyless version — the housings are identical.
Which way up does the battery go?
Positive (+) side up, facing the cover you removed. If in doubt, photograph the old cell before you take it out and copy that orientation exactly — fitting it the wrong way round will leave the key dead.
Do I need to reprogram the key after changing the battery?
No. A battery swap doesn’t affect the coding or the immobiliser pairing, so the key works the moment you refit the cover. Only a brand-new key needs programming.
How do I open the Scala key without breaking it?
Fold the metal blade out first — that relieves the cover — then lift the back cover off with a thumbnail or a small flat-head screwdriver at the marked notch. It’s held by clips, so it needs only light pressure, never force.
How long should a Scala key battery last?
Usually two to four years. A KESSY keyless key can be at the shorter end because it wakes each time it’s near the car; leaving it sitting right by the vehicle shortens battery life further.
Can I still drive the Scala if the key battery is completely dead?
Yes. Use the fold-out metal blade to unlock the driver’s door manually. To start a KESSY car with a dead fob, hold the key against the marked spot on the steering column or start button as described in the owner’s manual — the car reads the transponder directly, so a flat coin cell won’t strand you.
If your Scala’s remote or keyless entry started misbehaving alongside a warning light on the dash rather than a simple loss of range, the cause may be a stored fault rather than the key battery — you can look up what a logged code means on autodtcs.com.
Independent guide — not affiliated with Skoda. Always follow your official service manual and safety precautions. Read our full disclaimer.