12 Facts About Seat Mii Replacement Key To Get You Thinking About The Cooler Water Cooler

12 Facts About Seat Mii Replacement Key To Get You Thinking About The Cooler Water Cooler

Key Fob Replacement for the Seat Ibiza

The facelifted fifth generation Ibiza is a contender in the crowded supermini segment. It goes toe-to-toe with the Renault Clio, Peugeot 208 and Ford Fiesta.

Utilizing a thumb nail or small screwdriver that has a flat head (A) and pull upwards the key fob battery compartment cover (B). Replace the CR2025 coin battery by ensuring it is fitted in the correct direction and polarity.

Dead Coin Battery

The most common reason for a key fob to not unlock or lock your car is a dead battery. If it fails you will notice an increase in range or no power. It is easy to replace it with a new (CR2025) one from a local retailer. Be aware that faulty or defective batteries could cause damage to the key fob. Make sure that the new battery is identical in size, specifications and voltage as the older one.

If  seat key fob  was exposed to clean water such as rain or soapy tap water, it is likely that the electronic chip inside has been damaged due to corrosion. You can try cleaning the chip with alcohol or an electronic cleaner to see if it helps but it is more likely that the chip is damaged.


A new key fob is the easiest solution. They are available from most major car dealers and can be fitted by a skilled mechanic. You can also buy them online, such as on eBay. The best option is to work on a flat surface that has good lighting. It makes it easier to work with the small parts. You'll also be able to avoid putting something in the wrong place. Always keep the key fob in a secure and safe area.

Water Damage

If your key fob is soaked by dropping it in the pool or fumbling it in the wash, you may think it's a goner but there's hope. When the circuit board inside the fob is exposed to water, it develops a conductor that shorts out the components. It also accelerates corrosion and rust.

This is an easy solution. Find something absorbent, and put it inside the fob - a paper towl or tissue is ideal. Make use of a cotton swab and isopropyl to cleanse the circuit board, and any other components. Let the fob air dry in a warm, dry environment for a few weeks.

Once the fob is dried out then replace the battery with an alternative of the same size and the same polarity ('+' with the upwards direction). The fob may be difficult to open in order to access the battery, but if you keep a flat-head screwdriver at hand it should be easy to insert. After the fob is reassembled it should function as usual. If it doesn't work, you'll need to reprogram it or replace the receiver module.

Radio Interference

When a keyfob operates properly, it broadcasts a radio signal that is received by a receiver module in your vehicle. If the signal is not received, your key fob won't function. This could be caused by weather conditions, objects or other transmitters operating in the same frequency range near your vehicle.

In this scenario, it is best to replace the battery in your key fob. It is recommended to replace your key fob's battery.

A few LED lighting aftermarkets that utilizes the same frequencies as a remote control key fob can interfere with the signal, stopping it from reaching receiver modules. The LED light must be switched off or changed to a different frequency to avoid interference.

If you've just replaced the battery on your key fob but the issue persists, it's possible that the antenna on the key fob is damaged or has stopped working. This is important because the antenna is responsible for transmitting an indication from the key fob to the receiver module. An OBDII scan will help you identify the issue by telling you exactly what's wrong with the system. The scanner will ask for information about your specific vehicle including the model and make, engine type, and VIN number.

Faulty Receiver Module

The key fob contains an encoder module that transmits the signals to lock and unlock. All electronic components that are on-board will stop working if the receiver module has a problem. If this happens then reprogramming the module using an OBDII scanner or replacing the key fob may aid.

This issue could be caused by a dead coin-cell or a water damage or signal interference. Try resetting the on-board computer by disconnecting the 12 volt battery for 15 minutes. This will draw out any remaining electricity that may be causing problems. Start by removing the cable from the negative terminal of the battery first, followed by the positive terminal. After 15 minutes, connect your battery in reverse order. First, positive and then negative next.

Dirt or water can cause damage to the internal chip of the key fob. If your key has stopped working after getting wet, wash the electronic component using isopropyl alcohol or an electronic cleaner prior to reinstalling the battery. If it is not working after exposure to salty or soapy water the chip is likely damaged and needs to be replaced.

Another possibility is a defective antenna module fuse that is sending the lock / unlock signal to the vehicle. The fuse could be found in various places, based on the model. For example, it could be under the rear seat, or in the trunk, or the side of the dashboard.