Battery replacement in the key ŠKODA Octavia TUR: instructions with photos and nuances

Key to ŠKODA Octavia TUR with contactless access Keyless Or a standard keychain sooner or later will require replacement of the power supply. If the signal is weak and the indicator on the dashboard shows an error Key not foundThe problem is probably with the battery. In this article, step by step instructions for models Octavia TUR 2013-2023 (including restyled versions), analysis of typical errors and tips on choosing the right power supply.

The replacement procedure takes no more than 10 minutes, but has nuances: from the type of battery (depending on the year of release) to the method of disassembling the body without damage. We'll take it. key-plate - both with the unlock button of the lid, and with a monolithic body, and also tell, Why the battery may not work immediately after the battery is replaced and what to do about it.

What kind of battery is in the ŠKODA Octavia TUR key?

The type of power supply depends on the generation of the car and the type of key. In most cases, for Octavia TUR (2013–2023) two options are used:

• 🔋 CR2032 - for keys until 2017 (Including) and some versions after the facelift. Voltage 3B, diameter 20 mm.
• 🔋 CR2026 - for keys after 2018 with the system Keyless. The thickness is less (2.5 mm vs. 3.2 mm in CR2032), but the voltage is the same.

How do you determine which battery is in your key? Look at the hull:

• 🔍 If there's one on the back cover. coin-cloth - most likely this is CR2032.
• 🔍 If the lid is smooth and removed only with effort - probably, CR2026 (thinner keys like that).

Year of issue	Key type	Battery	Notes
2013–2017	Standard key fob (3 buttons)	CR2032	The cover is removed with a coin or screwdriver.
2018–2020	Keyless (5 buttons)	CR2026	Body thinner, lid without groove
2021–2023	Keyless with touch control	CR2026	Reprogramming may be required.

Important: Don’t buy batteries from unknown brands! Cheap analogues (e.g., "NoName" from transitions) often have a smaller capacity and can leak. The best options are: Duracell, Energizer, Panasonic or Varta.

Replacement tools: what you need

No professional tools are needed to replace the battery, but some items will make it easier to do so:

• 🔧 Flat head screwdriver (or pick) - for prying off the lid.
• 🪙 Coin (for example, 10 rubles) - if the lid with a groove.
• 🧲 Magnet (optional) to keep small details (springs, contacts).
• 📸 Smartphone - to photograph the location of parts before disassembly.

Warning: Do not use a knife or sharp objects to open the case! This can damage the latches or leave scratches on the plastic. If the lid does not lend itself, try to slightly heat the key with a hairdryer (not higher than 50 ° C) - the plastic will become softer.

Step-by-step instructions: how to change the battery

The replacement process differs depending on the type of key. Below are instructions for The three most common options.

Option 1: Coin groove key (CR2032)

This type is found in Octavia TUR until 2017 and some versions of 2018-2019.

1. Place the key on a flat surface buttons up.
2. Insert a coin into the groove on the back cover and turn it counterclockwise 10–15°.
3. Carefully remove the cover - you will see a battery inside.
4. Pry up the old battery with a screwdriver (without touching the contacts!) and remove it.
5. Install a new battery plus up (there is a marking on it).
6. Close the lid by turning it clockwise until it clicks.

Make sure the contacts are clean|Check the battery polarity|Remove dust from the board|Close the cover until it clicks-->

Option 2: Keyless key without groove (CR2026)

Such keys are thinner and are found in Octavia TUR after 2018. The cover is removed with force.

1. Find small gap between the case halves (usually on the logo side ŠKODA).
2. Insert a flathead screwdriver or pick into the gap and carefully separate the halves.
3. Remove the top cover - inside you will see a circuit board with a battery.
4. Remove the old battery by prying it from the side (do not pull on the contacts!).
5. Install a new one CR2026 minus up (unlike CR2032!).
6. Assemble the case by aligning the latches until you hear a characteristic click.

Attention! In the keys Keyless after 2020 it may stand additional capacitor, which discharges when the battery is removed. If the key does not work after replacing, wait 5-10 minutes - the system will reboot.

What should I do if the key does not work after replacement?

If the key is not recognized after installing a new battery, follow these steps:

1. Make sure the battery is installed the correct way (plus/minus).

2. Check the contacts on the board - they may have oxidized (clean with alcohol).

3. Bring the key close to the start button and press it 3 times in a row - this will reset the communication error.

4. If this does not help, the key may need to be reprogrammed in the service (valid for models after 2021).

Option 3: Key with touch control (after 2021)

In the newest versions Octavia TUR the keys are equipped with touch buttons and can have double sided board. It is important here not to damage the cables!

1. Carefully separate the housing, starting with top corner (where there are no buttons).
2. Take photographs of the location of the board and cables before removing.
3. Disconnect the cable (if any) and remove the battery.
4. Install a new one CR2026, observing polarity.
5. Reassemble the key in reverse order, making sure that the cables are not kinked.

Critical error: If after assembly the touch buttons do not respond, it means the cable has come loose. Disassemble the key and check the connection. Do not try to repair the cable with tape - this will lead to a short circuit!

Common mistakes and how to avoid them

Even in such a simple procedure, mistakes can be made. Here the most common and how to prevent them:

• ⚡ Wrong polarity — the battery is inserted upside down. Consequences: the key does not work, the immobilizer settings can be reset.
• 🔧 Damage to latches - if you press too hard with a screwdriver. Result: the lid does not fix, moisture gets in.
• 🧹 Dirt on contacts - Dust or oxidation interferes with communication. Clean the board only alcohol (not water!).
• ⏳ Ignoring timeout — after replacement, the key may not work for 5–10 minutes (the system reboots).

Case from practice: Owner Octavia TUR 2019 After replacing the battery, I discovered that the car did not respond to the key. Reason - he used a battery CR2016 (thin), which did not provide the necessary contact. After installing the correct CR2026 the problem has disappeared.

How to extend the life of your key battery

Average key battery life ŠKODA Octavia TUR — 2–4 years. But it can be increased if you follow simple rules:

• 🚗 Do not store the key near metal objects (coins, other keys) - this creates parasitic discharges.
• 🌡️ Avoid extreme temperatures — do not leave the key in direct sunlight or in the cold (below -10°C).
• 📶 Don't press buttons unnecessarily — each signal consumes charge.
• 🔋 Use batteries with low self-discharge (for example, Duracell Quantum or Energizer Ultimate Lithium).

Myth: “The more often you drive, the faster the battery runs out.” In fact, the main energy consumption is not for exchanging data with the machine (this only happens when approaching), but for background power supply and random button presses in your pocket.

What to do if the key still doesn't work

If the key is not recognized after replacing the battery, check the following:

1. Reboot the car system:
   1. Turn off the ignition.
   2. Open and close the driver's door.
   3. Wait 2 minutes and try again.
2. Check the fuse box: B Octavia TUR The fuse is responsible for the operation of the immobilizer F35 (10A) in the block under the steering wheel.
3. Clear errors: Connect a diagnostic scanner (for example, ELM327) and clear errors on the bus CANassociated with the key.
4. Reprogram the key: If all else fails, contact the service to synchronize the key with the ECU.

Attention! If the indicator on the dashboard is on Immobilizer (car with a key), this may mean not only a dead battery, but also failure in the comfort unit (BCM). In this case, diagnostics is required.

FAQ: Frequently asked questions about replacing the battery

Can I use a watch battery?

No! Watch batteries (eg LR44) have a different voltage (1.5V) and are not suitable for keys ŠKODA. Use only CR2032 or CR2026 with a voltage of 3V.

How much does it cost to replace a battery at a service center?

At the official dealership ŠKODA replacement will cost 800–1500 rubles (including battery). In unofficial services - 300–600 rubles. However, the procedure is so simple that doing it yourself is more profitable.

Why does the key only work near the car after replacing the battery?

This is a sign weakened signal. Possible reasons:

• Poor contact between the battery and the board (check if the springs are bent).
• Oxidation of the antenna inside the key (needs to be cleaned with alcohol).
• Interference from other electronic devices (for example, a smartphone in the same pocket).

Can I use rechargeable batteries?

Technically yes, but not recommended. Rechargeable batteries (eg ML2032) have a lower voltage (2.4V instead of 3V), which can lead to unstable operation of the key, especially in cold weather.

How do you know if the battery is running low?

Signs of a low battery:

• 🔴 A warning appears on the dashboard Key not found.
• 🔴 The key only works after 2-3 attempts.
• 🔴 The range is reduced (you need to bring the key closer to the car).
• 🔴 The indicator on the key flashes red or does not light up at all.